_readLogr(): Cannot open \\atlas\Shipdata\logger\2025\rcsn\2025281datavislogr.dat.gz
_readLogr(): Cannot open \\atlas\Shipdata\logger\2025\rcsn\2025281datavislogr.dat.gz
Illegal division by zero at bin\pdkc_perseus.pl line 540.

Running bin\pdkc_perseus.pl at Sat Dec  6 03:00:04 2025 on host draco

Command line:
bin\pdkc_perseus.pl -rov vnta -dive 4691

bin\pdkc_perseus.pl: Getting Expedition object for diveno = 4691 and rname = vnta
set_expd(): rov = vnta, diveno = 4691
set_expd(): Executing sql:
SELECT ExpeditionID_FK, DateDiff(ss, '01/01/70', DiveStartDtg), DateDiff(ss, '01/01/70', DiveEndDtg), DiveStartDtg, DiveEndDtg FROM Dive WHERE DiveNumber = 4691 AND RovName = 'vnta'

RS->Fields(0)->Value= 8831

RS->Fields(1)->Value= 1759938007

RS->Fields(2)->Value= 1759959644

RS->Fields(3)->Value= 10/8/2025 3:40:07 PM

RS->Fields(4)->Value= 10/8/2025 9:40:44 PM

set_expd(): $self->{EndDDD} = 281
set_expd(): $self->{StartEsecs} = 1759936807
set_expd(): $self->{EndEsecs} = 1759960844
set_expd(): $self->{EndDtg} = 10/8/2025 9:40:44 PM
_readLogr(): Reading videologr data from 2025281datavislogr.dat.gz. 
_readLogr(): Expedition start & stop times are 1759936807 & 1759960844
set_expd(): Calling _refineStartAndEndEsecs...
refineStartAndEndEsecs(): LOGHOST_SYSTEM_UTC[0] = 
refineStartAndEndEsecs(): $LOGHOST_SYSTEM_UTC[end] = 
refineStartAndEndEsecs(): numMinBack = 22, numMinForward = 22
refineStartAndEndEsecs(): Refined StartEsecs = 1759936687, Refined EndEsecs = 1759960964 
_readLogr(): Reading videologr data from 2025281datavislogr.dat.gz. 
_readLogr(): Expedition start & stop times are 1759936687 & 1759960964
rovnavCTDO(): calcUTM = 0
rovnavCTDO(): getRaw = 1
rovNav(): 1, calcUTM = 0
rovNav(): 2, getRaw = 1
rovNav(): calcUTM = 0
rovNav(): DDD = 281 (looping to 281) 
rovNav(): \\atlas\RovNavEdit\2025\vnta\nav2025281vnta.txt and \\atlas\RovNavEdit\2025\vnta\nav2025281vntaedited.txt does not exist.  Skipping this file...
-1 in tList
-1 in {self->{rovT}}
-1 in {self->{rovH}}
rovCTDO(): ROV CTDO start & stop times are   1759952520 & 1759955115
rovNavCTDO(): Looking up ROVCTDO data ('.'found, 'X' exceeds max iter.):

rovGDCListRefs(): dMedian = 
rovGDCListRefs(): dStats->sample_range = 
rovGDCListRefs(): rovDepth (paroscientific) range is less than 1.  Using rovctd calculated depth
rovNav(): 1, calcUTM = 0
rovNav(): 2, doNotRefineStartEnd = 1
rovNav(): calcUTM = 0
rovNav(): DDD = 281 (looping to 281) 
rovNav(): \\atlas\RovNavEdit\2025\vnta\nav2025281vnta.txt and \\atlas\RovNavEdit\2025\vnta\nav2025281vntaedited.txt does not exist.  Skipping this file...
-1 in tList
-1 in {self->{rovT}}
-1 in {self->{rovH}}
rovGDCListRefs(): dMedian = 
rovGDCListRefs(): dStats->sample_range = 
rovGDCListRefs(): rovDepth (paroscientific) range is less than 1.  Using rovctd calculated depth

bin\pdkc_perseus.pl: -------------------------------------------------------------------------------

Position subsampling set to 1