When referencing this material, please cite:
Franc Jager, Alessandro Taddei, George B. Moody, Michele Emdin,
Gorazd Antolic, Roman Dorn, Ales Smrdel, Carlo Marchesi, and
Roger G. Mark.
Long-term ST database: a reference for the development and evaluation
of automated ischaemia detectors and for the study of the dynamics of
myocardial ischaemia.
Medical & Biological Engineering & Computing
41(2):172-183 (2003).
[HTML]
[PDF]
Please also
include the standard citation for PhysioNet:
Goldberger AL, Amaral LAN, Glass L, Hausdorff JM, Ivanov PCh, Mark RG,
Mietus JE, Moody GB, Peng C-K, Stanley HE. PhysioBank, PhysioToolkit, and
PhysioNet: Components of a New Research Resource for Complex Physiologic
Signals.
Circulation 101(23):e215-e220 [Circulation Electronic Pages;
http://circ.ahajournals.org/content/101/23/e215.full];
2000 (June 13).
The Long-Term ST Database contains 86 lengthy ECG
recordings of 80
human subjects, chosen to exhibit a variety of events of ST segment
changes, including ischemic ST episodes, axis-related non-ischemic ST
episodes, episodes of slow ST level drift, and episodes containing
mixtures of these phenomena. The database was created to support
development and evaluation of algorithms capable of accurate
differentiation of ischemic and non-ischemic ST events, as well as
basic research into mechanisms and dynamics of myocardial ischemia.
Half (43) of these 86 recordings, representing
42 of the 80 subjects, were contributed to PhysioNet by the
creators of the database in February 2003, and the remaining half of the
database was contributed in May 2007. (A corrected version of s30801.dat
was also posted together with the second half of the database.) Detailed clinical notes and ST deviation
trend plots are provided for all 86 records. The entire Long-Term ST
Database is also available from its original home page at the
Laboratory for
Biomedical Computer Systems and Imaging at the University of Ljubljana,
Slovenia.
The individual recordings of the Long-Term ST Database are between 21
and 24 hours in duration, and contain two or three ECG signals. Each
ECG signal has been digitized at 250 samples per second with 12-bit
resolution over a range of ±10 millivolts. Each record
includes a set of meticulously verified ST episode and signal quality
annotations, together with additional beat-by-beat QRS annotations and
ST level measurements.
For each recording, the first digit in the record name (2 or 3) indicates
the number of ECG signals. Records obtained from the same subject have
names that differ in the last digit only.
Each record is represented by 12 files, all with the same base name (the record
name) and a suffix that identifies the file type:
- a (text)
.hea (header) file, containing detailed clinical
information for the subject;
- a (binary)
.dat (signal) file, containing the digitized
ECG signals;
- several (binary) annotation files, identifiable by suffix:
-
.ari (automatically-generated beat annotations)
-
.atr (manually corrected beat annotations)
-
.16a (automatically-generated, manually-corrected ST-segment
measurements, based on 16-second moving averages,
updated for each beat)
-
.sta (ST-segment episode annotations, Vmin = 75 µV,
Tmin = 30 s; see below)
-
.stb (ST-segment episode annotations, Vmin = 100 µV,
Tmin = 30 s)
-
.stc (ST-segment episode annotations, Vmin = 100 µV,
Tmin = 60 s)
- a (text)
.cnt file, containing counts of ST episodes in the
.sta, .stb, and .stc files
- a (text)
.stf file, containing the ST level function,
the linearly approximated baseline ST level function (ST level reference
function), and the ST deviation function for each ECG lead;
- a (binary)
.tsr.zip file, containing additional data files
needed by SEMIA (see below):
- a (text)
_fin.dmy file, containing fine diagnostic and
morphology time series
- a (text)
_raw.dmy file, containing raw diagnostic and
morphology time series
- a (text)
_1.sta file, containing ST segment markers
(Before using SEMIA, download and unzip the .tsr.zip file
for the record(s) of interest into your current directory.)
- a (binary)
.klt.zip file, which decompresses to a (text)
.klt file, containing
- time series of ST segment Karhunen-Loève transform
coefficients (ST segment principal components)
- time series of QRS complex Karhunen-Loève transform
coefficients (QRS complex principal components)
The measurements in the .16a files were used to construct ST level and
deviation functions for each signal, as recorded in the .stf files.
(Further details about the .stf, tsr.zip, and
.klt.zip files are available here.) ST
episodes were identified independently for each signal, based on its ST
deviation function and on these criteria:
- An episode begins when the magnitude of the ST deviation function
first exceeds 50 µV;
- The deviation must reach a magnitude of Vmin or more throughout a
continuous interval of at least Tmin;
- The episode ends when the deviation becomes smaller than 50 µV,
provided that it does not exceed 50 µV in the following 30 seconds.
Since differing criteria may be appropriate depending on the application,
three sets of ST episode annotations are provided. The annotation codes
used in the .sta, .stb, .stc, and .16a
files are described here.
For each record, the numbers of ST episodes as determined by each of the three
sets of criteria are summarized in an additional text file (with suffix
.cnt). The deviation functions and the locations of the episodes are
presented graphically in a set of trend plots here. Each
record is represented by a 24-hour plot (_00-24.png) and by five
6-hour plots which overlap by one hour (_00-06.png,
05-11.png, etc.).
Development of the Long-Term ST Database was an inter-institutional and
international effort coordinated by Prof. Franc Jager of the Faculty of
Computer and Information Science, University of Ljubljana, Ljubljana, Slovenia.
Other investigators include: Roman Dorn, PhD, and Ales Smrdel, MSc, of the
Faculty of Computer and Information Science, Ljubljana; Dr. Gorazd Antolic of
the University Medical Center, Ljubljana, Slovenia; Drs. Alessandro Taddei and
Michele Emdin of the CNR Institute for Clinical Physiology (the creators of the
European ST-T Database European ST-T Database), Pisa, and
Prof. Carlo Marchesi of the University of Firenze, Firenze, Italy; and
Dr. Roger Mark and George Moody of the Massachusetts Institute of Technology
(the creators of the MIT-BIH Arrhythmia Database),
Cambridge, MA, USA, and the Beth Israel Deaconess Medical Center, Boston, MA,
USA. The project was supported by Medtronic, Inc. (Minneapolis, MN, USA) and
Zymed, Inc. (Camarillo, CA, USA). Development of the Long-Term ST Database
began in 1995 and was completed in 2002. We thank all who contributed to this
project; further details are here.
Several sources contributed recordings to the Long-Term ST Database:
-
Eleven of the recordings included in the Long-Term ST Database are from the
initial Long-Term ST Database developed under a joint U.S.-Slovenian research
project between 1995 and 1998.
-
Ten additional recordings of the Long-Term ST Database are from the collection
originally gathered by the Pisa group for the European ST-T Database, which
contains two-hour excerpts of some of these same recordings. The original
analog recordings were redigitized for the Long-Term ST Database; since the
signals have been rescaled as a result, direct comparison of the annotations in
the European ST-T Database records with those for the corresponding portions of
the Long-Term ST Database records is not possible. The inclusion of these
recordings in the Long-Term ST Database allows study of the dynamics of
ischemic ST changes over a much longer period in these previously well-studied
subjects. Among the samples available here, record s20021 includes the two-hour
segment that was previously digitized to produce record e0113 of the European
ST-T Database.
-
Another 18 of the LTSTDB recordings, those containing recordings with three ECG
signals, were contributed to the project by Zymed, Inc.
The annotation of the Long-Term ST Database was performed using SEMIA, a program written by the group
in Ljubljana for this purpose. SEMIA provides an interactive
graphical user interface to a semi-automated algorithm for measurement
of ST levels. Sources for SEMIA, and a precompiled version for GNU/Linux,
are available here (as individual files), and as
a gzip-compressed tar archive.
Each recording was reviewed independently by expert annotators using
SEMIA at each of the three sites (Ljubljana, Pisa, and Cambridge).
Participants met several times annually to obtain the consensus
reference annotations.
A series of SEMIA screenshots illustrates the annotation process. (Use your
browser's Back button to return to this page after following the links to these
screenshots in the next paragraph. If you have problems viewing the
screenshots in your browser, please read this
note.)
The first task faced by the expert annotators was to mark the locations of the
PQ junction (the isoelectric level) and the J point, based on 16-second
averaged cardiac cycles chosen at frequent intervals throughout the recordings.
These marks serve as guideposts for the automated ST level measurement
algorithm that performs the next step. The experts then examine the time
series of ST level measurements in order to locate and to mark a set of local reference points
(marked as LR in the upper panel of the figure). These are used to construct a
piecewise linear baseline ST level function, which may vary over time as a
result of body position changes or other factors unrelated to ischemia,
especially in subjects with prior myocardial infarctions. Axis shifts reflect body
position changes, and are usually most apparent in the QRS complexes (note the
changes in the QRS principal components, KL1 - KL5, in the lower panel of the
figure). By contrast, when ischemic ST changes occur, they are most apparent
in the principal components of the ST segment (see the lower panel in this screenshot).
Local references are placed before and after each such episode, and the
episodes are annotated next. During this process, the expert annotators have
the option of viewing either the ST level time
series or the ST deviation time
series (formed by subtracting the baseline ST level function from the
uncorrected ST level time series), as shown in the upper panels of the two
screenshots. For further details, see reference 4 below.
Software for producing printed
documentation of the Long-Term ST Database is available for Linux or Unix.
The software produces compact trend plots of the ST level and ST deviation
time series, with indicators of ischemic and non-ischemic ST episodes.
Updates
Franc Jager and Miha Amon have contributed additional sets of time
series computed from the ST segments of each normal and non-noisy beat
in the database. In each case, they provided time series computed
separately for each ECG lead.
- In 2009, Miha and Franc calculated coefficients of normalized and
non-normalized Legendre orthonormal basis functions. The Legendre
orthonormal-transform coefficient time series are in
the legendre subdirectory.
- In 2011, Miha and Franc derived new single-lead KL basis functions
for the ST segments, and used them to compute normalized and
non-normalized KL coefficients. The KL calculated coefficients are
centralized by their mean values. The single-lead KL coefficient time
series are in the kl-single subdirectory.
- In 2015, Miha and Franc derived another new set of single lead KL
basis functions for the ST segments, and their subsequent normalized
and non-normalized KL coefficients. This time, the KL coefficients are
not mean-centered. The single-lead KL coefficient time series are in
the kl-single-uncentralized
subdirectory.
Derivation of the Legendre orthonormal-transform normalized and
non-normalized coefficient time series, derivation of new single-lead
KL basis functions for the ST segments, and derivation of normalized
and non-normalized KL coefficient time series is described in
reference 5 below.
The kl-single and kl-single-uncentralized projects use different techniques
(time domain and KL based respectively) to remove noisy heartbeats. Therefore
the KL-Transform is applied on two different covariance matrices derived from
two different sets of ST sections, which results in two slightly different sets
of basis functions. More importantly however is that only the subsequent
kl-single coefficients are centralized by their mean values.
Contacts
For further information, please contact:
Franc Jager
Laboratory of Biomedical Computer Systems and Imaging
University of Ljubljana
Faculty of Computer and Information Science
Trzaska 25
1000 Ljubljana, Slovenia
E-mail: franc.jager@fri.uni-lj.si
Alessandro Taddei
National Research Council (CNR)
Institute of Clinical Physiology
Via Moruzzi 1
56124 Pisa, Italy
E-mail: taddei@ifc.cnr.it
George B. Moody
Harvard-MIT Division of Health Sciences and Technology
Massachusetts Institute of Technology, Room E25-505A
77 Massachusetts Avenue
Cambridge, MA 02139 USA
E-mail: george@mit.edu
Additional References
- Franc Jager, George B. Moody, Alessandro Taddei, Gorazd Antolic,
Mitja Zabukovec, Maja Skrjanc, Michele Emdin, and Roger G. Mark.
Development of a Long-Term Database for Assessing the Performance
of Transient Ischemia Detectors.
Computers in Cardiology 1996, pp. 481-484,
IEEE Press. ISSN 0276-6547.
[HTML]
[LaTeX]
[PostScript]
[PDF]
- Franc Jager, George B. Moody, Alessandro Taddei, Gorazd Antolic,
Ales Smrdel, Boris Glavic, Michele Emdin, Carlo Marchesi, and
Roger G. Mark.
Research Resources for Development and Evaluation of Transient
Ischemia Detectors.
Proc. Computer-Aided Data Analysis in Medicine (CADAM 98),
Informatica Medica Slovenica, 5(1,2):45-54, 1998.
ISSN 1318-2129.
- Franc Jager, George B. Moody, Alessandro Taddei, Gorazd Antolic,
Michele Emdin, Ales Smrdel, Boris Glavic, Carlo Marchesi, and
Roger G. Mark.
A Long-Term ST Database for Development and Evaluation of Ischemia
Detectors.
Computers in Cardiology 1998, pp. 301-304,
IEEE Press. ISSN 0276-6547.
- Franc Jager, Alessandro Taddei, Michele Emdin, Gorazd Antolic,
Roman Dorn, George B. Moody, Boris Glavic, Ales Smrdel, M Varanini,
Mitja Zabukovec, Simone Bordigiago, Carlo Marchesi, and
Roger G. Mark.
The Long-Term ST Database: A Research Resource for Algorithm
Development and Physiologic Studies of Transient Myocardial Ischemia.
Computers in Cardiology 2000, pp. 841-844.
[HTML]
[LaTeX]
[PostScript]
[PDF]
- Miha Amon.
Robustno ocenjevanje oblik elektrokardiograma z uporabo ortogonalnih
transformacij. [Robust estimation of morphologic features and shape
representation of electrocardiograms using orthogonal transforms;
in Slovene, includes English abstract.]
MSc Thesis, 2011, Faculty of Computer and Information Science,
University of Ljubljana, Slovenia.
[PDF]
- Miha Amon, Franc Jager.
Electrocardiogram ST-Segment Morphology Delineation Method Using Orthogonal Transformations. PLOS One, February 10, 2016.
DOI: 10.1371/journal.pone.0148814.
Name Last modified Size Description
![[PARENTDIR]](/icons/back.gif)
Parent Directory -
![[ ]](/icons/hand.right.gif)
00README 2002-05-20 16:00 2.8K file format info
![[ ]](/icons/index.gif)
ANNOTATORS 2008-05-09 11:49 357 list of annotators
![[ ]](/icons/unknown.gif)
DOI 2015-09-21 13:00 19
MD5SUMS 2010-09-13 11:26 48K
RECORDS 2007-06-18 13:17 602 list of record names
RECORDS-2003 2003-02-28 10:53 301 list of record names
SHA1SUMS 2010-09-13 11:28 56K
SHA256SUMS 2010-09-13 11:31 81K
![[DIR]](/icons/folder.gif)
figures/ 2001-09-17 04:48 - SEMIA screenshots
kl-single-uncentralized/ 2015-11-19 11:12 -
kl-single/ 2015-11-20 18:01 -
legendre/ 2015-11-19 14:35 -
lt00/ 2001-02-09 01:17 - CinC 2000 paper
lt03/ 2003-04-14 21:58 -
lt96/ 2001-02-09 01:16 - CinC 1996 paper
notes/ 2003-12-09 11:22 - clinical notes
s20011.16a 2002-05-20 16:00 11M ST segment measurements
![[ ]](/icons/binary.gif)
s20011.ari 2002-05-20 16:00 359K automatically-generated beat annotations
s20011.atr 2002-05-20 16:00 207K reference annotations
![[TXT]](/icons/text.gif)
s20011.cnt 2002-05-20 16:00 4.2K ST episode counts
s20011.dat 2002-05-20 16:00 59M digitized signal(s)
s20011.hea 2002-05-20 16:00 1.7K header file
![[ ]](/icons/compressed.gif)
s20011.klt.zip 2002-05-20 16:00 543K ST and QRS KL coefficients
s20011.sta 2002-05-20 16:00 4.2K ST episode annotations
s20011.stb 2002-05-20 16:00 3.2K ST episode annotations
s20011.stc 2002-05-20 16:00 3.2K ST episode annotations
s20011.stf 2002-05-20 16:00 2.6M ST level/deviation functions
s20011.tsr.zip 2002-03-26 03:28 4.0M SEMIA data files
s20021.16a 2002-05-20 16:00 9.1M ST segment measurements
s20021.ari 2002-05-20 16:00 174K automatically-generated beat annotations
s20021.atr 2002-05-20 16:00 200K reference annotations
s20021.cnt 2002-05-20 16:00 4.3K ST episode counts
s20021.dat 2002-05-20 16:00 54M digitized signal(s)
s20021.hea 2002-05-20 16:00 1.4K header file
s20021.klt.zip 2002-05-20 16:00 574K ST and QRS KL coefficients
s20021.sta 2002-05-20 16:00 11K ST episode annotations
s20021.stb 2002-05-20 16:00 11K ST episode annotations
s20021.stc 2002-05-20 16:00 9.4K ST episode annotations
s20021.stf 2002-05-20 16:00 2.4M ST level/deviation functions
s20021.tsr.zip 2002-05-20 16:00 3.7M SEMIA data files
s20031.16a 2002-05-20 16:00 11M ST segment measurements
s20031.ari 2002-05-20 16:00 214K automatically-generated beat annotations
s20031.atr 2002-05-20 16:00 229K reference annotations
s20031.cnt 2002-05-20 16:00 4.3K ST episode counts
s20031.dat 2002-05-20 16:00 61M digitized signal(s)
s20031.hea 2008-04-05 18:05 1.7K header file
s20031.hea- 2002-05-20 16:00 1.6K header file
s20031.klt.zip 2002-05-20 16:00 591K ST and QRS KL coefficients
s20031.sta 2002-05-20 16:00 2.8K ST episode annotations
s20031.stb 2002-05-20 16:00 2.4K ST episode annotations
s20031.stc 2002-05-20 16:00 2.3K ST episode annotations
s20031.stf 2002-05-20 16:00 2.7M ST level/deviation functions
s20031.tsr.zip 2002-03-26 03:31 3.9M SEMIA data files
s20041.16a 2002-05-20 16:00 9.4M ST segment measurements
s20041.ari 2002-05-20 16:00 213K automatically-generated beat annotations
s20041.atr 2002-05-20 16:00 246K reference annotations
s20041.cnt 2002-05-20 16:00 4.3K ST episode counts
s20041.dat 2002-05-20 16:00 62M digitized signal(s)
s20041.hea 2008-04-05 18:05 2.3K header file
s20041.hea- 2002-05-20 16:00 2.3K header file
s20041.klt.zip 2002-05-20 16:00 706K ST and QRS KL coefficients
s20041.sta 2002-05-20 16:00 7.2K ST episode annotations
s20041.stb 2002-05-20 16:00 6.3K ST episode annotations
s20041.stc 2002-05-20 16:00 5.8K ST episode annotations
s20041.stf 2002-05-20 16:00 2.7M ST level/deviation functions
s20041.tsr.zip 2002-05-20 16:00 3.7M SEMIA data files
s20051.16a 1970-01-06 19:42 12M ST segment measurements
s20051.ari 1970-01-06 19:43 564K automatically-generated beat annotations
s20051.atr 1970-01-06 19:43 276K reference annotations
s20051.cnt 1970-01-06 19:43 4.3K ST episode counts
s20051.dat 1970-01-06 19:43 55M digitized signal(s)
s20051.hea 2010-09-13 11:15 1.5K header file
s20051.hea- 1970-01-06 19:47 1.5K header file
s20051.klt.zip 1970-01-28 20:37 559K ST and QRS KL coefficients
s20051.sta 1970-01-06 19:47 5.0K ST episode annotations
s20051.stb 1970-01-06 19:47 4.9K ST episode annotations
s20051.stc 1970-01-06 19:47 4.9K ST episode annotations
s20051.stf 1970-01-28 20:37 2.4M ST level/deviation functions
s20051.tsr.zip 1970-01-28 20:37 4.4M SEMIA data files
s20061.16a 2002-05-20 16:00 12M ST segment measurements
s20061.ari 2002-05-20 16:00 444K automatically-generated beat annotations
s20061.atr 2002-05-20 16:00 294K reference annotations
s20061.cnt 2002-05-20 16:00 4.3K ST episode counts
s20061.dat 2002-05-20 16:00 59M digitized signal(s)
s20061.hea 2010-09-13 11:15 1.1K header file
s20061.hea- 2002-05-20 16:00 1.1K header file
s20061.klt.zip 2002-05-20 16:00 491K ST and QRS KL coefficients
s20061.sta 2002-05-20 16:00 4.1K ST episode annotations
s20061.stb 2002-05-20 16:00 3.1K ST episode annotations
s20061.stc 2002-05-20 16:00 2.8K ST episode annotations
s20061.stf 2002-05-20 16:00 2.6M ST level/deviation functions
s20061.tsr.zip 2002-05-20 16:00 4.2M SEMIA data files
s20071.16a 1970-01-06 19:52 9.1M ST segment measurements
s20071.ari 1970-01-06 19:53 310K automatically-generated beat annotations
s20071.atr 1970-01-06 19:53 167K reference annotations
s20071.cnt 1970-01-06 19:53 4.2K ST episode counts
s20071.dat 1970-01-06 19:53 54M digitized signal(s)
s20071.hea 1970-01-06 19:57 1.1K header file
s20071.klt.zip 1970-01-28 20:38 453K ST and QRS KL coefficients
s20071.sta 1970-01-06 19:57 3.4K ST episode annotations
s20071.stb 1970-01-06 19:57 3.0K ST episode annotations
s20071.stc 1970-01-06 19:57 2.7K ST episode annotations
s20071.stf 1970-01-28 20:38 2.4M ST level/deviation functions
s20071.tsr.zip 1970-01-28 20:38 3.3M SEMIA data files
s20081.16a 2002-05-20 16:00 12M ST segment measurements
s20081.ari 2002-05-20 16:00 433K automatically-generated beat annotations
s20081.atr 2002-05-20 16:00 244K reference annotations
s20081.cnt 2002-05-20 16:00 4.3K ST episode counts
s20081.dat 2002-05-20 16:00 59M digitized signal(s)
s20081.hea 2010-09-13 11:15 1.5K header file
s20081.hea- 2002-05-20 16:00 1.5K header file
s20081.klt.zip 2002-05-20 16:00 590K ST and QRS KL coefficients
s20081.sta 2002-05-20 16:00 8.0K ST episode annotations
s20081.stb 2002-05-20 16:00 5.5K ST episode annotations
s20081.stc 2002-05-20 16:00 5.0K ST episode annotations
s20081.stf 2002-05-20 16:00 2.6M ST level/deviation functions
s20081.tsr.zip 2002-05-20 16:00 4.4M SEMIA data files
s20091.16a 1970-01-06 20:02 12M ST segment measurements
s20091.ari 1970-01-06 20:03 413K automatically-generated beat annotations
s20091.atr 1970-01-06 20:03 223K reference annotations
s20091.cnt 1970-01-06 20:03 4.2K ST episode counts
s20091.dat 1970-01-06 20:03 58M digitized signal(s)
s20091.hea 1970-01-06 20:07 1.9K header file
s20091.klt.zip 1970-01-28 20:39 546K ST and QRS KL coefficients
s20091.sta 1970-01-06 20:07 3.9K ST episode annotations
s20091.stb 1970-01-06 20:07 2.7K ST episode annotations
s20091.stc 1970-01-06 20:07 2.3K ST episode annotations
s20091.stf 1970-01-28 20:39 2.5M ST level/deviation functions
s20091.tsr.zip 1970-01-28 20:39 4.3M SEMIA data files
s20101.16a 2002-05-20 16:00 6.0M ST segment measurements
s20101.ari 2002-05-20 16:00 324K automatically-generated beat annotations
s20101.atr 2002-05-20 16:00 192K reference annotations
s20101.cnt 2002-05-20 16:00 4.3K ST episode counts
s20101.dat 2002-05-20 16:00 52M digitized signal(s)
s20101.hea 2002-05-20 16:00 1.5K header file
s20101.klt.zip 2002-05-20 16:00 470K ST and QRS KL coefficients
s20101.sta 2002-05-20 16:00 2.0K ST episode annotations
s20101.stb 2002-05-20 16:00 1.9K ST episode annotations
s20101.stc 2002-05-20 16:00 1.9K ST episode annotations
s20101.stf 2002-05-20 16:00 2.3M ST level/deviation functions
s20101.tsr.zip 2002-05-20 16:00 2.5M SEMIA data files
s20111.16a 1970-01-06 20:11 8.9M ST segment measurements
s20111.ari 1970-01-06 20:11 467K automatically-generated beat annotations
s20111.atr 1970-01-06 20:11 212K reference annotations
s20111.cnt 1970-01-06 20:11 4.3K ST episode counts
s20111.dat 1970-01-06 20:11 57M digitized signal(s)
s20111.hea 1970-01-06 20:15 1.9K header file
s20111.klt.zip 1970-01-28 20:40 572K ST and QRS KL coefficients
s20111.sta 1970-01-06 20:15 8.6K ST episode annotations
s20111.stb 1970-01-06 20:15 8.0K ST episode annotations
s20111.stc 1970-01-06 20:15 7.7K ST episode annotations
s20111.stf 1970-01-28 20:40 2.5M ST level/deviation functions
s20111.tsr.zip 1970-01-28 20:40 3.6M SEMIA data files
s20121.16a 2002-05-20 16:00 7.2M ST segment measurements
s20121.ari 2002-05-20 16:00 319K automatically-generated beat annotations
s20121.atr 2002-05-20 16:00 170K reference annotations
s20121.cnt 2002-05-20 16:00 4.2K ST episode counts
s20121.dat 2002-05-20 16:00 55M digitized signal(s)
s20121.hea 2002-05-20 16:00 1.6K header file
s20121.klt.zip 2002-05-20 16:00 458K ST and QRS KL coefficients
s20121.sta 2002-05-20 16:00 6.6K ST episode annotations
s20121.stb 2002-05-20 16:00 6.3K ST episode annotations
s20121.stc 2002-05-20 16:00 6.2K ST episode annotations
s20121.stf 2002-05-20 16:00 2.4M ST level/deviation functions
s20121.tsr.zip 2002-05-20 16:00 2.6M SEMIA data files
s20131.16a 1970-01-06 20:19 8.9M ST segment measurements
s20131.ari 1970-01-06 20:20 397K automatically-generated beat annotations
s20131.atr 1970-01-06 20:20 290K reference annotations
s20131.cnt 1970-01-06 20:20 4.3K ST episode counts
s20131.dat 1970-01-06 20:20 54M digitized signal(s)
s20131.hea 1970-01-06 20:24 1.9K header file
s20131.klt.zip 1970-01-28 20:41 545K ST and QRS KL coefficients
s20131.sta 1970-01-06 20:24 4.9K ST episode annotations
s20131.stb 1970-01-06 20:24 4.1K ST episode annotations
s20131.stc 1970-01-06 20:24 3.9K ST episode annotations
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s30671.tsr.zip 1970-01-28 21:09 4.2M SEMIA data files
s30681.16a 2002-05-20 16:00 19M ST segment measurements
s30681.ari 2002-05-20 16:00 248K automatically-generated beat annotations
s30681.atr 2002-05-20 16:00 326K reference annotations
s30681.cnt 2002-05-20 16:00 5.1K ST episode counts
s30681.dat 2002-05-20 16:00 91M digitized signal(s)
s30681.hea 2002-05-20 16:00 1.7K header file
s30681.klt.zip 2002-05-20 16:00 676K ST and QRS KL coefficients
s30681.sta 2002-05-20 16:00 12K ST episode annotations
s30681.stb 2002-05-20 16:00 11K ST episode annotations
s30681.stc 2002-05-20 16:00 10K ST episode annotations
s30681.stf 2002-05-20 16:00 3.8M ST level/deviation functions
s30681.tsr.zip 2002-05-20 16:00 5.5M SEMIA data files
s30691.16a 1970-01-07 01:06 15M ST segment measurements
s30691.ari 1970-01-07 01:07 199K automatically-generated beat annotations
s30691.atr 1970-01-07 01:07 274K reference annotations
s30691.cnt 1970-01-07 01:07 5.1K ST episode counts
s30691.dat 1970-01-07 01:07 92M digitized signal(s)
s30691.hea 1970-01-07 01:14 1.4K header file
s30691.klt.zip 1970-01-28 21:10 480K ST and QRS KL coefficients
s30691.sta 1970-01-07 01:14 4.8K ST episode annotations
s30691.stb 1970-01-07 01:14 3.6K ST episode annotations
s30691.stc 1970-01-07 01:14 3.3K ST episode annotations
s30691.stf 1970-01-28 21:10 3.8M ST level/deviation functions
s30691.tsr.zip 1970-01-28 21:10 4.0M SEMIA data files
s30701.16a 2002-05-20 16:00 17M ST segment measurements
s30701.ari 2002-05-20 16:00 209K automatically-generated beat annotations
s30701.atr 2002-05-20 16:00 219K reference annotations
s30701.cnt 2002-05-20 16:00 5.0K ST episode counts
s30701.dat 2002-05-20 16:00 87M digitized signal(s)
s30701.hea 2002-05-20 16:00 1.6K header file
s30701.klt.zip 2002-05-20 16:00 547K ST and QRS KL coefficients
s30701.sta 2002-05-20 16:00 8.3K ST episode annotations
s30701.stb 2002-05-20 16:00 8.1K ST episode annotations
s30701.stc 2002-05-20 16:00 8.0K ST episode annotations
s30701.stf 2002-05-20 16:00 3.6M ST level/deviation functions
s30701.tsr.zip 2002-05-20 16:00 4.7M SEMIA data files
s30711.16a 1970-01-07 01:21 15M ST segment measurements
s30711.ari 1970-01-07 01:22 299K automatically-generated beat annotations
s30711.atr 1970-01-07 01:22 380K reference annotations
s30711.cnt 1970-01-07 01:22 5.1K ST episode counts
s30711.dat 1970-01-07 01:22 90M digitized signal(s)
s30711.hea 1970-01-07 01:28 1.2K header file
s30711.klt.zip 1970-01-28 21:11 499K ST and QRS KL coefficients
s30711.sta 1970-01-07 01:28 5.0K ST episode annotations
s30711.stb 1970-01-07 01:28 3.9K ST episode annotations
s30711.stc 1970-01-07 01:28 3.6K ST episode annotations
s30711.stf 1970-01-28 21:11 3.8M ST level/deviation functions
s30711.tsr.zip 1970-01-28 21:11 4.1M SEMIA data files
s30721.16a 2002-05-20 16:00 15M ST segment measurements
s30721.ari 2002-05-20 16:00 316K automatically-generated beat annotations
s30721.atr 2002-05-20 16:00 316K reference annotations
s30721.cnt 2002-05-20 16:00 5.1K ST episode counts
s30721.dat 2002-05-20 16:00 91M digitized signal(s)
s30721.hea 2002-05-20 16:00 1.8K header file
s30721.klt.zip 2002-05-20 16:00 484K ST and QRS KL coefficients
s30721.sta 2002-05-20 16:00 4.6K ST episode annotations
s30721.stb 2002-05-20 16:00 4.5K ST episode annotations
s30721.stc 2002-05-20 16:00 4.5K ST episode annotations
s30721.stf 2002-05-20 16:00 3.8M ST level/deviation functions
s30721.tsr.zip 2002-05-20 16:00 4.0M SEMIA data files
s30731.16a 1970-01-07 01:35 18M ST segment measurements
s30731.ari 1970-01-07 01:36 207K automatically-generated beat annotations
s30731.atr 1970-01-07 01:36 265K reference annotations
s30731.cnt 1970-01-07 01:36 5.1K ST episode counts
s30731.dat 1970-01-07 01:36 92M digitized signal(s)
s30731.hea 1970-01-07 01:42 1.7K header file
s30731.klt.zip 1970-01-28 21:12 588K ST and QRS KL coefficients
s30731.sta 1970-01-07 01:42 10K ST episode annotations
s30731.stb 1970-01-07 01:42 9.8K ST episode annotations
s30731.stc 1970-01-07 01:42 9.8K ST episode annotations
s30731.stf 1970-01-28 21:12 3.8M ST level/deviation functions
s30731.tsr.zip 1970-01-28 21:12 4.6M SEMIA data files
s30732.16a 1970-01-07 01:43 16M ST segment measurements
s30732.ari 1970-01-07 01:44 189K automatically-generated beat annotations
s30732.atr 1970-01-07 01:44 229K reference annotations
s30732.cnt 1970-01-07 01:44 5.1K ST episode counts
s30732.dat 1970-01-07 01:44 83M digitized signal(s)
s30732.hea 1970-01-07 01:49 1.7K header file
s30732.klt.zip 1970-01-28 21:13 528K ST and QRS KL coefficients
s30732.sta 1970-01-07 01:49 12K ST episode annotations
s30732.stb 1970-01-07 01:49 12K ST episode annotations
s30732.stc 1970-01-07 01:49 12K ST episode annotations
s30732.stf 1970-01-28 21:13 3.5M ST level/deviation functions
s30732.tsr.zip 1970-01-28 21:13 4.2M SEMIA data files
s30741.16a 2002-05-20 16:00 20M ST segment measurements
s30741.ari 2002-05-20 16:00 241K automatically-generated beat annotations
s30741.atr 2002-05-20 16:00 242K reference annotations
s30741.cnt 2002-05-20 16:00 5.0K ST episode counts
s30741.dat 2002-05-20 16:00 92M digitized signal(s)
s30741.hea 2002-05-20 16:00 1.7K header file
s30741.klt.zip 2002-05-20 16:00 544K ST and QRS KL coefficients
s30741.sta 2002-05-20 16:00 3.9K ST episode annotations
s30741.stb 2002-05-20 16:00 2.4K ST episode annotations
s30741.stc 2002-05-20 16:00 2.0K ST episode annotations
s30741.stf 2002-05-20 16:00 3.8M ST level/deviation functions
s30741.tsr.zip 2002-05-20 16:00 5.0M SEMIA data files
s30742.16a 2002-05-20 16:00 18M ST segment measurements
s30742.ari 2002-05-20 16:00 222K automatically-generated beat annotations
s30742.atr 2002-05-20 16:00 222K reference annotations
s30742.cnt 2002-05-20 16:00 5.0K ST episode counts
s30742.dat 2002-05-20 16:00 84M digitized signal(s)
s30742.hea 2002-05-20 16:00 1.5K header file
s30742.klt.zip 2002-05-20 16:00 515K ST and QRS KL coefficients
s30742.sta 2002-05-20 16:00 4.4K ST episode annotations
s30742.stb 2002-05-20 16:00 3.0K ST episode annotations
s30742.stc 2002-05-20 16:00 2.5K ST episode annotations
s30742.stf 2002-05-20 16:00 3.5M ST level/deviation functions
s30742.tsr.zip 2002-05-20 16:00 4.4M SEMIA data files
s30751.16a 1970-01-07 02:04 14M ST segment measurements
s30751.ari 1970-01-07 02:05 207K automatically-generated beat annotations
s30751.atr 1970-01-07 02:05 274K reference annotations
s30751.cnt 1970-01-07 02:05 5.1K ST episode counts
s30751.dat 1970-01-07 02:05 92M digitized signal(s)
s30751.hea 1970-01-07 02:11 1.8K header file
s30751.klt.zip 1970-01-28 21:14 495K ST and QRS KL coefficients
s30751.sta 1970-01-07 02:11 6.4K ST episode annotations
s30751.stb 1970-01-07 02:11 6.1K ST episode annotations
s30751.stc 1970-01-07 02:11 5.9K ST episode annotations
s30751.stf 1970-01-28 21:14 3.8M ST level/deviation functions
s30751.tsr.zip 1970-01-28 21:15 3.8M SEMIA data files
s30752.16a 1970-01-07 02:11 16M ST segment measurements
s30752.ari 1970-01-07 02:12 235K automatically-generated beat annotations
s30752.atr 1970-01-07 02:12 306K reference annotations
s30752.cnt 1970-01-07 02:12 5.1K ST episode counts
s30752.dat 1970-01-07 02:12 92M digitized signal(s)
s30752.hea 1970-01-07 02:18 1.8K header file
s30752.klt.zip 1970-01-28 21:15 461K ST and QRS KL coefficients
s30752.sta 1970-01-07 02:18 5.7K ST episode annotations
s30752.stb 1970-01-07 02:18 5.5K ST episode annotations
s30752.stc 1970-01-07 02:18 5.5K ST episode annotations
s30752.stf 1970-01-28 21:15 3.8M ST level/deviation functions
s30752.tsr.zip 1970-01-28 21:15 4.1M SEMIA data files
s30761.16a 2002-05-20 16:00 16M ST segment measurements
s30761.ari 2002-05-20 16:00 229K automatically-generated beat annotations
s30761.atr 2002-05-20 16:00 328K reference annotations
s30761.cnt 2002-05-20 16:00 5.1K ST episode counts
s30761.dat 2002-05-20 16:00 88M digitized signal(s)
s30761.hea 2002-05-20 16:00 1.8K header file
s30761.klt.zip 2002-05-20 16:00 488K ST and QRS KL coefficients
s30761.sta 2002-05-20 16:00 4.1K ST episode annotations
s30761.stb 2002-05-20 16:00 2.9K ST episode annotations
s30761.stc 2002-05-20 16:00 2.7K ST episode annotations
s30761.stf 2002-05-20 16:00 3.7M ST level/deviation functions
s30761.tsr.zip 2002-05-20 16:00 4.2M SEMIA data files
s30771.16a 1970-01-07 02:25 11M ST segment measurements
s30771.ari 1970-01-07 02:26 152K automatically-generated beat annotations
s30771.atr 1970-01-07 02:26 152K reference annotations
s30771.cnt 1970-01-07 02:26 5.1K ST episode counts
s30771.dat 1970-01-07 02:26 65M digitized signal(s)
s30771.hea 1970-01-07 02:30 1.7K header file
s30771.klt.zip 1970-01-28 21:16 398K ST and QRS KL coefficients
s30771.sta 1970-01-07 02:30 5.2K ST episode annotations
s30771.stb 1970-01-07 02:30 4.3K ST episode annotations
s30771.stc 1970-01-07 02:30 3.9K ST episode annotations
s30771.stf 1970-01-28 21:16 2.7M ST level/deviation functions
s30771.tsr.zip 1970-01-28 21:16 3.2M SEMIA data files
s30781.16a 2002-05-20 16:00 15M ST segment measurements
s30781.ari 2002-05-20 16:00 344K automatically-generated beat annotations
s30781.atr 2002-05-20 16:00 341K reference annotations
s30781.cnt 2002-05-20 16:00 5.1K ST episode counts
s30781.dat 2002-05-20 16:00 86M digitized signal(s)
s30781.hea 2002-05-20 16:00 1.6K header file
s30781.klt.zip 2002-05-20 16:00 507K ST and QRS KL coefficients
s30781.sta 2002-05-20 16:00 3.5K ST episode annotations
s30781.stb 2002-05-20 16:00 3.0K ST episode annotations
s30781.stc 2002-05-20 16:00 2.9K ST episode annotations
s30781.stf 2002-05-20 16:00 3.6M ST level/deviation functions
s30781.tsr.zip 2002-05-20 16:00 4.2M SEMIA data files
s30791.16a 1970-01-07 02:37 16M ST segment measurements
s30791.ari 1970-01-07 02:38 196K automatically-generated beat annotations
s30791.atr 1970-01-07 02:38 201K reference annotations
s30791.cnt 1970-01-07 02:38 5.1K ST episode counts
s30791.dat 1970-01-07 02:38 89M digitized signal(s)
s30791.hea 2010-09-13 11:15 1.8K header file
s30791.hea- 1970-01-07 02:44 1.8K header file
s30791.klt.zip 1970-01-28 21:17 542K ST and QRS KL coefficients
s30791.sta 1970-01-07 02:44 8.9K ST episode annotations
s30791.stb 1970-01-07 02:44 8.3K ST episode annotations
s30791.stc 1970-01-07 02:44 8.2K ST episode annotations
s30791.stf 1970-01-28 21:17 3.7M ST level/deviation functions
s30791.tsr.zip 1970-01-28 21:17 4.4M SEMIA data files
s30801.16a 2002-05-20 16:00 12M ST segment measurements
s30801.ari 2002-05-20 16:00 189K automatically-generated beat annotations
s30801.atr 2002-05-20 16:00 189K reference annotations
s30801.cnt 2002-05-20 16:00 5.0K ST episode counts
s30801.dat 1970-01-07 02:45 92M digitized signal(s)
s30801.hea 2002-05-20 16:00 1.8K header file
s30801.klt.zip 2002-05-20 16:00 615K ST and QRS KL coefficients
s30801.sta 2002-05-20 16:00 4.7K ST episode annotations
s30801.stb 2002-05-20 16:00 4.4K ST episode annotations
s30801.stc 2002-05-20 16:00 4.3K ST episode annotations
s30801.stf 2002-05-20 16:00 3.8M ST level/deviation functions
s30801.tsr.zip 2002-05-20 16:00 3.8M SEMIA data files
semia-3.0.1.tar.gz 2002-08-02 15:26 119K gzip-compressed tar archive
semia-3.0.1/ 2012-01-05 20:46 - SEMIA sources and binaries
semia/ 2012-01-05 20:46 - SEMIA sources and binaries
tables/ 2003-02-28 17:20 - summary statistics
thanks.shtml 2012-01-05 21:02 4.9K
trends/ 2003-12-09 11:25 - trend plots
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Friday, 28 October 2016 at 16:58 EDT
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