Here is the math on how it works - this is true for all series/parallel strings (even matching ones).
In series volts add - use the smallest amps.
In parallel amps add - use the smallest volts.
Use Vmp and Imp for these calculations.
These are my assumptions of the panels: (I used math to figure out the Vmp - how close was I?):
Panel1 Voc 22.6 Vmp 18.62 Imp 5.37
Panel2 Voc 23.1 Vmp. 18.48 Imp 5.41
Volts add 18.62+18.48=37.1
Use lowest amps - 5.37
Volts * Amps = Watts
37.1 * 5.37 = 199 watts
Those two panels are so close your penalty for putting them in series is only 1watt.