Illegal division by zero at .\bin\pdkc.pl line 536.

Running .\bin\pdkc.pl at Wed Aug 26 09:02:32 2015 on host ephyra-vm2

Command line:
.\bin\pdkc.pl -rov vnta -dive 1613

.\bin\pdkc.pl: Getting Expedition object for diveno = 1613 and rname = vnta
set_expd(): rov = vnta, diveno = 1613
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 = 1613 AND RovName = 'vnta'

RS->Fields(0)->Value= 1805

RS->Fields(1)->Value= 927822600

RS->Fields(2)->Value= 927841800

RS->Fields(3)->Value= 5/27/1999 4:30:00 PM

RS->Fields(4)->Value= 5/27/1999 9:50:00 PM

set_expd(): $self->{EndDDD} = 147
set_expd(): $self->{StartEsecs} = 927821400
set_expd(): $self->{EndEsecs} = 927843000
set_expd(): $self->{EndDtg} = 5/27/1999 9:50:00 PM
_readLogr(): Reading videologr data from 1999147videologr.dat.gz. 
_readLogr(): Expedition start & stop times are 927821400 & 927843000
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 927843006, self->{EndEsecs} = 927843000
_readLogr(): #LOGHOST_SYSTEM_UTC = 2156
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 927821406
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 927842996
set_expd(): Calling _refineStartAndEndEsecs...
refineStartAndEndEsecs(): LOGHOST_SYSTEM_UTC[0] = 927821406
refineStartAndEndEsecs(): $LOGHOST_SYSTEM_UTC[end] = 927842996
refineStartAndEndEsecs(): numMinBack = 22, numMinForward = 22
refineStartAndEndEsecs(): Refined StartEsecs = 927821280, Refined EndEsecs = 927843120 
_readLogr(): Reading videologr data from 1999147videologr.dat.gz. 
_readLogr(): Expedition start & stop times are 927821280 & 927843120
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 927843126, self->{EndEsecs} = 927843120
_readLogr(): #LOGHOST_SYSTEM_UTC = 2180
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 927821286
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 927843116
rovnavCTDO(): calcUTM = 0
rovnavCTDO(): getRaw = 1
rovNav(): 1, calcUTM = 0
rovNav(): 2, getRaw = 1
rovNav(): calcUTM = 0
rovNav(): DDD = 147 (looping to 147) 
rovNav(): \\atlas\RovNavEdit\1999\vnta\nav1999147vnta.txt and \\atlas\RovNavEdit\1999\vnta\nav1999147vntaedited.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   927840840 & 927840285
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, doNotRefineStartEnd = 1
rovNav(): 2, calcUTM = 0
rovNav(): calcUTM = 0
rovNav(): DDD = 147 (looping to 147) 
rovNav(): \\atlas\RovNavEdit\1999\vnta\nav1999147vnta.txt and \\atlas\RovNavEdit\1999\vnta\nav1999147vntaedited.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.pl: -------------------------------------------------------------------------------

Position subsampling set to 1