fix bug in checking for proper pixel value offsets
fix bug in checking for proper pixel value offsets

git-svn-id: https://beagle.whoi.edu/svn/ifcb/trunk@919 9f5e5bc8-6430-4f94-ad00-aad15e9f9366

Former-commit-id: 59a02c5cdfb5aff1c1afb2728011e537ce1209e7
hsosik/ifcb-analysis,hsosik/ifcb-analysis,hsosik/ifcb-analysis,hsosik/ifcb-analysis,hsosik/ifcb-analysis