; NOISEFLOOR.PRO
;
; This program reads in the mean and variance images for the sequence of
; increasing exposure times that were calculated by MVMOD.PRO. With each
; pair of images for an exposure time (IMttt.AVGC, IMttt.VARC), it
; averages the means and variances in a 10x10-pixel group at the center of
; the images, and plots the resulting average variances against the
; resulting average means. 
;
mv=FLTARR(50)
ma=mv
FOR i=1,50 DO BEGIN
    texp=400L*i
    sexp=STRCOMPRESS(texp,/REMOVE_ALL)
    avgc=imin('im'+sexp+'.avgc',256)
    varc=imin('im'+sexp+'.varc',256)
    ma(i-1)=TOTAL(avgc(123:132,123:132))/100.
    mv(i-1)=TOTAL(varc(123:132,123:132))/100.
ENDFOR
END