Specifies when to stop iterating MAPTOL
"
maptol_mean"
) between the maps created on subsequent
iterations falls below the value of maptol, then the map-maker performs one more iteration and then
terminates. Only used if parameter "
numiter"
is negative. The normalised mean (or maximum)
change between maps is defined as the mean (or maximum) of the absolute change in map
pixel value, taken over all pixels within the region of the mask specified by parameter
"
maptol_mask"
, and normalised by the RMS of the square root of the pixel variances. Compared to
parameter "
chitol"
, this is much more like a "
by eye"
test, that will stop the solution
when the map stops changing. [0.05]