This folder contains tools and data for the derivation of partition function polynomial coefficients for ARTS: TIPS/ Latest version of the TIPS program (slightly modified for all-species tabulated Q(T) output). TIPS_70-3000K.DAT TIPS tabulated partition functions over full TIPS temperature range on 1K-step grid. That is the data recent additions of coefficients are based on (for the older species, the data seems to have not changed. only made random checks, though.) partition_functions.py Python routines for deriving polynomial coefficients from TIPS or JPL partition function data. Largely incomplete for JPL species. Partly only taken over & converted to python from partition_function.pro (specifically the vibrational correction). partition_functions.pro Copied from ARTS-1.0 branch (misc/part_fct/). IDL code to derive HITRAN/TIPS and JPL based partition fucntions and polynomial coefficients. Also includes routines for comparison & plotting of the data from the different sources.