Some white regions in tricolor demo for 2013

[valentina-s]

Some blank regions when displaying different transects from 2013. Some follow horizontal/vertical lines, others follow bottom. Is it a graphics artifact? Or an issue with the data. Seems 2019 does not have this issue.

[leewujung]

This is likely issues with data. There was a bug using mean instead of nanmean in the previous version of compute_MVBS that caused this. 2013 has a lot of irregularity in the data in terms of NaNs are, so I am pretty sure that is the problem.

[leewujung]

If you use the new 2013 regridded data it should not have this blank bands.