Frame 0 in egress_1130_1400.dat occurs at 11 min 30.00 s after start.
The start is at 11:50:50.00 BST, i.e., frame 0 is therefore at

t0 = 12:02:20.00 BST (11:02:20.00 UT)

For the first attempt, the relative error of the pixel values was set
to 20%;

minimum derivative set to 30.