UT    Exp   Time  flavor     comment       (S/N)^2 totals
========================================== b1   r1   b2   r2

 ----- sequence 10528, plate 636 -------
 05:21 10528 10.0   flat        pre-flat
 ----- sequence 10528, plate 636 -------
 05:21 10528 10.0   flat        pre-flat
 ----- sequence 10528, plate 636 -------
 05:21 10528 10.0   flat        pre-flat
 ----- sequence 10528, plate 636 -------
 05:21 10528 10.0   flat        pre-flat
 05:23 10529 2.0    arc         pre-arc
 05:23 10529 2.0    arc         pre-arc
 05:23 10529 2.0    arc         pre-arc
 05:23 10529 2.0    arc         pre-arc