Re: hello!---question for valid_range and actual_range

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>I have a easy question:
>
>>From a NCEP netCDF file ,I read ulwrf : have
> ulwrf:valid_range = -100.f, 1000.f ;
> ulwrf:actual_range = 59.80005f, 363.5999f ;
>
>I do not know what is this mean and what is the
>difference?

valid range: 'theoretical' min and max values
actual range: min and max of data on the file.

    -100. <= actual_range <= 1000.
    

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