Answering some solar panel with MPPT controller ?

The serial panel shading test could suggest that the panels have bypass diodes. Is that the case? Shading only 1 or 2 bypass cell areas would also be interesting.

Perhaps even more interesting would be a test with soft shading (like a tree) on 1 and 2 panels as compared to full sun. Past discussions suggest parallel panels with soft shading on one panel will outperform the same shading on serial panels. I.e. Soft shading on one serial panel restricts the output of both serial panels.