thank you very much. Yes, the HMET file was incorrect. I think I have solved that problem. However, I would like to ask another question. It seems to me that it is not allowed to have nodata values in precipitation data. I have data from multiple stations but these are incomplete. Hence, I thought that the precipitation will be interpolated at each time step from available data. This would of course increase a lot demands on the computational capacity. Could you please provide me an information about it?