ble may only be of type byte, short, or long. The attributes scale_factor and add_offset(which must match in data type) must be of type float or double. The data type of the attributes should match the intended type of the unpacked data. (It is not advised to unpack a long into a float as there is a potential precision loss.)</li>
<li><strong>_FillValue </strong> - If a scalar attribute with this name is defined for a variable and is of the same type as the variable, it will be subsequently used as the fill