different centroid in track_step csv and patches nc

[ahijevyc]

The centroid in the csv track_step file is different than the centroid in the patches netCDF file.
When I say different, I don't mean more than 0.2 degrees different, but definitely more than machine roundoff error.

For example:
object: d01_REFL_1KM_AGL_20110427-0000_24_25_622_01
csv longitude: -87.70007
patches longitude: -87.73282