Use force_intercept=0 for zpeakwidth.
Use force_intercept=0 for zpeakwidth.

Doesn't really change much. Avoids some extreme outliers. Makes no
difference to 'max flux'. And there's a good physical reason for why
the intercept should be zero.

dcherian/eddyshelf,dcherian/eddyshelf,dcherian/eddyshelf