Solar Panel Shadows and Bypass Diodes

I removed the cover from the junction box to see the diodes. It would be common for a 6xnn cell array to have 3 bypass diodes (assuming it has any). The reason is that for every 2 rows both wires are near the junction box so there is only a small amount of wire needed to provide connections for the 3 diodes. Hope this helps but there are other arrangements.

I agree 195W seems inconsistent with 72 cells. My 60 cell panels are 250W.