/volc/as/contrace/stratosphere/
/volc/as/contrace/stratosphere/dates
2         ! 1 if concentrations (grid_conc), 2 if mixing ratios (grid_pptv), 3 if residence times (grid_time) shall be extracted
92592000. ! decay (1/e) time to be applied to the age classes
/volc/as/contrace/zugspitze/positions.dat
stratosphere_zugspitze.dat
0                      ! number of additional data columns to be read from datafile
