Jeff, I went into one of the nc files and changed all the _fillValue to _FillValue now when I run ncgen3 shows a lot of type mismatch, byte, float, char etc. because now ncgen is actually reading the _FloatValue and complaining it doesn't match the variable declared type. Jeff, I looked at some of the NAW files they have -18 dBz value in the NAW_Range_Vector_Map Data although in the cfradial config in the S_Data directory the NAW_add_offset =0 ----- Jeff, do you know what type data the NAW_Range_Vector_Map is suppose to be, in the nc file as you see it's byte is that right? byte NAW_Range_Vector_Map(time, range) ; NAW_Range_Vector_Map:long_name = "Range_Vector_Map" ; NAW_Range_Vector_Map:_fillValue = 999.f ; NAW_Range_Vector_Map:sampling_ratio = 1.f ; NAW_Range_Vector_Map:coordinate = "time range" ; NAW_Range_Vector_Map:grid_mapping = "grid_mapping" ; Also, the cfradial.cfg file has Naw_add_offset = 0, but the data has -18's so something is wacky this is both P-3's. ----- The NAW cfradial's also contains the variable nyquist_velocity and its corresponding incorrect data, since the NAW product is only supposed to contain a reflectivity type data . This variable and its data needs to be deleted.