The data in the lower-left corner of the EDR (A) comes from the previous SDR granule.
The data in the upper-right corner of the EDR (B) comes from the next SDR granule.
Notice also that the beginning and ending times given in the EDR filename do not
match with the times of the SDR filename. This is a reflection of the fact that data
from the previous and next SDR granules were mapped to this EDR granule.