I use MCTK to process MOD021KM data and I have to read solar zenith angle from the MOD03 data, for I have hundreds of data to process. So I write a pro file based on yours to process them But I found the MOD03 can not be processed, I just change the MOD021KM ,the pro file is running OK, I don't know why this happen. but I can process the MOD03 file by file in GUI. What's wrong with me.   Thank you in advance.