Characterize when netCDF4's autoscaling works.

[quintusdias]

laads/myd/water vapor case: scaling is correct

    short Water_Vapor(Cell_Along_Swath\:mod07, Cell_Across_Swath\:mod07) ;         
        Water_Vapor:valid_range = 0s, 20000s ;                                     
        Water_Vapor:_FillValue = -9999s ;                                          
        Water_Vapor:long_name = "Total Column Precipitable Water Vapor - IR Retrieval" ;
        Water_Vapor:units = "cm" ;                                                 
        Water_Vapor:scale_factor = 0.00100000004749745 ;                           
        Water_Vapor:add_offset = 0. ;      

[quintusdias]

laads/myd/radiance case: scaling cannot be applied because the attribute names are different. Also, the fill value is not applied

    ushort EV_1KM_Emissive(Band_1KM_Emissive\:MODIS_SWATH_Type_L1B, \10\*nscans\:MODIS_SWATH_Type_L1B, Max_EV_frames\:MODIS_SWATH_Type_L1B) ;
        EV_1KM_Emissive:long_name = "Earth View 1KM Emissive Bands Scaled Integers" ;
        EV_1KM_Emissive:units = "none" ;                                           
        EV_1KM_Emissive:valid_range = 0US, 32767US ;                               
        EV_1KM_Emissive:_FillValue = 65535US ;                                     
        EV_1KM_Emissive:band_names = "20,21,22,23,24,25,27,28,29,30,31,32,33,34,35,36" ;
        EV_1KM_Emissive:radiance_scales = 6.930753e-05f, 0.003466903f, 7.626575e-05f, 8.990753e-05f, 3.155614e-05f, 5.639821e-05f, 0.000117832f, 0.0001924497f, 0.0005570849f, 0.0004063234f, 0.0006508072f, 0.0005710013f, 0.0002623371f, 0.0002008728f, 0.0001767632f, 0.0001185949f ;
        EV_1KM_Emissive:radiance_offsets = 2467.264f, 2480.6f, 2478.177f, 2402.469f, 1077.445f, 1560.333f, 2724.219f, 2317.489f, 2610.015f, 1560.333f, 2035.933f, 2119.084f, 2500.599f, 2499.094f, 2500.521f, 2495.891f ;
        EV_1KM_Emissive:radiance_units = "Watts/m^2/micrometer/steradian" ;

[quintusdias]

In another LAADS/MYD case similar to the radiance case above, the fill value IS applied. The difference may be that the fill value is not the default?