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

Running .\bin\pdkc.pl at Wed Aug 26 08:38:08 2015 on host ephyra-vm2

Command line:
.\bin\pdkc.pl -rov vnta -dive 1430

.\bin\pdkc.pl: Getting Expedition object for diveno = 1430 and rname = vnta
set_expd(): rov = vnta, diveno = 1430
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 = 1430 AND RovName = 'vnta'

RS->Fields(0)->Value= 1647

RS->Fields(1)->Value= 899320800

RS->Fields(2)->Value= 899323500

RS->Fields(3)->Value= 7/1/1998 7:20:00 PM

RS->Fields(4)->Value= 7/1/1998 8:05:00 PM

set_expd(): $self->{EndDDD} = 182
set_expd(): $self->{StartEsecs} = 899319600
set_expd(): $self->{EndEsecs} = 899324700
set_expd(): $self->{EndDtg} = 7/1/1998 8:05:00 PM
_readLogr(): Reading videologr data from 1998182videologr.dat.gz. 
_readLogr(): Expedition start & stop times are 899319600 & 899324700
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 899324704, self->{EndEsecs} = 899324700
_readLogr(): #LOGHOST_SYSTEM_UTC = 508
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 899319608
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 899324694
set_expd(): Calling _refineStartAndEndEsecs...
refineStartAndEndEsecs(): LOGHOST_SYSTEM_UTC[0] = 899319608
refineStartAndEndEsecs(): $LOGHOST_SYSTEM_UTC[end] = 899324694
refineStartAndEndEsecs(): numMinBack = 22, numMinForward = 22
refineStartAndEndEsecs(): Refined StartEsecs = 899319480, Refined EndEsecs = 899324820 
_readLogr(): Reading videologr data from 1998182videologr.dat.gz. 
_readLogr(): Expedition start & stop times are 899319480 & 899324820
_readLogr(): Flushing variable names:
_readLogr(): esecs of file line[0] = 899324824, self->{EndEsecs} = 899324820
_readLogr(): #LOGHOST_SYSTEM_UTC = 532
_readLogr(): $LOGHOST_SYSTEM_UTC[beg] = 899319488
_readLogr(): $LOGHOST_SYSTEM_UTC[end] = 899324814
rovnavCTDO(): calcUTM = 0
rovnavCTDO(): getRaw = 1
rovNav(): 1, calcUTM = 0
rovNav(): 2, getRaw = 1
rovNav(): calcUTM = 0
rovNav(): DDD = 182 (looping to 182) 
Does file exist?: \\atlas\RovNavEdit\1998\vnta\nav1998182vntaedited.txt
   no.
EXPD.pm: editNav flag = 
rovNav(): Opening ROV nav data from \\atlas\RovNavEdit\1998\vnta\nav1998182vnta.txt
esecs, east, north, lat, lon, head, pres
rovNav(): 182: -1  in tList after reading from \\atlas\RovNavEdit\1998\vnta\nav1998182vnta.txt
-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 = 182 (looping to 182) 
Does file exist?: \\atlas\RovNavEdit\1998\vnta\nav1998182vntaedited.txt
   no.
EXPD.pm: editNav flag = 
rovNav(): Opening ROV nav data from \\atlas\RovNavEdit\1998\vnta\nav1998182vnta.txt
esecs, east, north, lat, lon, head, pres
rovNav(): 182: -1  in tList after reading from \\atlas\RovNavEdit\1998\vnta\nav1998182vnta.txt
-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