Code to calculate the values established by the regulations. It remains to develop the code to plot the maps.

df_obs_sub has been modified when we don't have the data for all dates, putting NA to have the same length as length_loop

slope > -20 considered for correction, otherwise NA's are set. Barnes statistics in a different script

Changes to not use the model if there is any NA. UK still not finished for LOOCV if we don't have model for a certain day/hour

minor changes to adapt the code to read csv files. IMportant changes has been applied in loop_uk_cat to adapt the local stations and observations to appli OK and LOOCV