ATHENA DATA

Data handling for the ship's standard instrumentation is accomplished by
the Athena data collection, logging, display and distribution system.  The
capabilities of this system are extensive and it can be expanded to
incorporate sensors provided by the science party.  All laboratories and
many potential sensor locations have cabling installed to facilitate
expansion of this type.  

Data is logged on Linus and is available via the ship's network.  This
CDROM is a copy of that directory path.  The Athena data is located in:

/home/data/athena/asciilog

  In addition, there is a 'cooked' directory that holds some positional
files.  In these files, you will find, Time, Lat, and Long.  The files are
numbered to indicate which day they refer to.  If a file does not begin
with 00:00, it may have data from a previous day at the beginning.  This
is a problem that ocassionaly crops up, and we are working to fix it. 

  These are recorded on the CDROM for archive purposes as well. 

A new Athena data file is created each night at midnight (GMT).  
Filenames are based on the date.  For example, the following file
would be the name assigned to a normal data file created on June 20, 1997:

at970620.001

A sample Athena data file is included below:

R/V ATLANTIS DATA LOG - 1 minute log file
Primary Data File (ASCII)
07/09/97   00:00:01
Julian Seconds = 13087699201
ATHENA V5.2

001| JSECONDS  Date & time (Julian seconds)
002| CDATE     Computer date
003| CTIME     Computer time
011| GYRO      Ship's heading (Gyro)
018| MBYTE1    MetraByte module #1
024| SSCND     Sea surface conductivity (mmho/cm)
025| SSTMP     Sea surface temperature (C)
041| GPS_COG   GPS course over ground
044| GPS_SOG   GPS speed over ground
045| GPS_TP    GPS time & position

001| 13087699230
002| 07/09/97
003| 00:00:30
011| 187.0,T
018| +03802.70
024| +41.5004
025| +20.0899
041| 178.8
044| 005.9
045| 000027.612,3716.4251,N,03215.9971,W,3

001| 13087699290
002| 07/09/97
003| 00:01:30
011| 188.5,T
018| +03807.50
024| +41.5358
025| +20.1260
041| 179.6
044| 006.0
045| 000128.612,3716.3242,N,03215.9939,W,3

001| 13087699350
002| 07/09/97
003| 00:02:30
011| 189.5,T
018| +03808.40
024| +42.1142
025| +20.5196
041| 180.2
044| 005.6
045| 000227.612,3716.2273,N,03215.9916,W,3

001| 13087699412
002| 07/09/97
003| 00:03:32
011| 190.2,T
018| +03810.20
024| +42.1768
025| +20.6000
041| 178.1
044| 005.9
045| 000329.612,3716.1277,N,03215.9905,W,3

001| 13087699470
002| 07/09/97
003| 00:04:30
011| 191.7,T
018| +03815.20
024| +41.8013
025| +20.7400
041| 179.8
044| 005.8
045| 000426.612,3716.0355,N,03215.9879,W,3

001| 13087699532
002| 07/09/97
003| 00:05:32
011| 192.0,T
018| +03817.2a
024| +42.1537
025| +20.6091
041| 179.7
044| 005.6
045| 000529.612,3715.9353,N,03215.9894,W,3