indices for heatwaves added

past_climate_figs/EOBS/EST/year/HWF_0_27_EST.png

past_climate_figs/EOBS/EST/year/HWF_0_30_EST.png

past_climate_figs/EOBS/EST/year/HWF_20_27_EST.png

past_climate_figs/EOBS/EST/year/HWF_20_30_EST.png

past_climate_figs/EOBS/EST/year/HWL_0_27_EST.png

past_climate_figs/EOBS/EST/year/HWL_0_30_EST.png

past_climate_figs/EOBS/EST/year/HWL_20_27_EST.png

past_climate_figs/EOBS/EST/year/HWL_20_30_EST.png

past_climate_figs/EOBS/EST/year/HWT_0_27_EST.png

past_climate_figs/EOBS/EST/year/HWT_0_30_EST.png

past_climate_figs/EOBS/EST/year/HWT_20_27_EST.png

past_climate_figs/EOBS/EST/year/HWT_20_30_EST.png

past_climate_figs/EOBS/EST/year/cddETCCDI_EST.png

past_climate_figs/EOBS/EST/year/csdiETCCDI_EST.png

past_climate_figs/EOBS/EST/year/dtrETCCDI_EST.png

past_climate_figs/EOBS/EST/year/fdETCCDI_EST.png

past_climate_figs/EOBS/EST/year/gslETCCDI_EST.png

past_climate_figs/EOBS/EST/year/idETCCDI_EST.png

past_climate_figs/EOBS/EST/year/r10mmETCCDI_EST.png

past_climate_figs/EOBS/EST/year/r20mmETCCDI_EST.png