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

Running .\bin\pdkc.pl at Wed Aug 26 09:07:18 2015 on host ephyra-vm2

Command line:
.\bin\pdkc.pl -rov vnta -dive 1657

.\bin\pdkc.pl: Getting Expedition object for diveno = 1657 and rname = vnta
set_expd(): rov = vnta, diveno = 1657
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 = 1657 AND RovName = 'vnta'

RS->Fields(0)->Value= 1847

RS->Fields(1)->Value= 934741200

RS->Fields(2)->Value= 934753200

RS->Fields(3)->Value= 8/15/1999 6:20:00 PM

RS->Fields(4)->Value= 8/15/1999 9:40:00 PM

set_expd(): $self->{EndDDD} = 227
set_expd(): $self->{StartEsecs} = 934740000
set_expd(): $self->{EndEsecs} = 934754400
set_expd(): $self->{EndDtg} = 8/15/1999 9:40:00 PM
_readLogr(): Reading videologr data from 1999227videologr.dat.gz. 
_readLogr(): Expedition start & stop times are 934740000 & 934754400
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 934679199, self->{EndEsecs} = 934754400
_readLogr(): Calling _readAnotherLogr() with nextDDD = 228
_readAnotherLogr(): DDD = 228
_readAnotherLogr(): Reading logr data from 1999228videologr.dat.gz. 
_readAnotherLogr(): Expedition start & stop times are 934740000 & 934754400
_readAnotherLogr(): esecs of file line[0] = 934817705, self->{EndEsecs} = 934754400
_readLogr(): #LOGHOST_SYSTEM_UTC = -1
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 
set_expd(): Calling _refineStartAndEndEsecs...
refineStartAndEndEsecs(): LOGHOST_SYSTEM_UTC[0] = 
refineStartAndEndEsecs(): $LOGHOST_SYSTEM_UTC[end] = 
refineStartAndEndEsecs(): numMinBack = 22, numMinForward = 22
refineStartAndEndEsecs(): Refined StartEsecs = 934739880, Refined EndEsecs = 934754520 
_readLogr(): Reading videologr data from 1999227videologr.dat.gz. 
_readLogr(): Expedition start & stop times are 934739880 & 934754520
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 934679199, self->{EndEsecs} = 934754520
_readLogr(): Calling _readAnotherLogr() with nextDDD = 228
_readAnotherLogr(): DDD = 228
_readAnotherLogr(): Reading logr data from 1999228videologr.dat.gz. 
_readAnotherLogr(): Expedition start & stop times are 934739880 & 934754520
_readAnotherLogr(): esecs of file line[0] = 934817705, self->{EndEsecs} = 934754520
_readLogr(): #LOGHOST_SYSTEM_UTC = -1
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 
rovnavCTDO(): getRaw = 1
rovnavCTDO(): calcUTM = 0
rovNav(): 1, calcUTM = 0
rovNav(): 2, getRaw = 1
rovNav(): calcUTM = 0
rovNav(): DDD = 227 (looping to 227) 
rovNav(): \\atlas\RovNavEdit\1999\vnta\nav1999227vnta.txt and \\atlas\RovNavEdit\1999\vnta\nav1999227vntaedited.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    & 
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 = 227 (looping to 227) 
rovNav(): \\atlas\RovNavEdit\1999\vnta\nav1999227vnta.txt and \\atlas\RovNavEdit\1999\vnta\nav1999227vntaedited.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