grouping

data/estonia/cloud-cover/annual.csv

data/estonia/cooling-degree-days/annual.csv

data/estonia/evaporation/annual.csv

data/estonia/frost-days/annual.csv

data/estonia/heating-degree-days/annual.csv

data/estonia/humidity/annual.csv

data/estonia/precipitation/annual.csv

data/estonia/snowfall/annual.csv

data/estonia/soil-moisture/annual.csv

...estonia/surface-downwelling-longwave-radiation/annual.csv

...stonia/surface-downwelling-shortwave-radiation/annual.csv

data/estonia/temperature/annual.csv

data/estonia/temperature/april.csv

data/estonia/temperature/august.csv

data/estonia/temperature/autumn.csv

data/estonia/temperature/december.csv

data/estonia/temperature/february.csv

data/estonia/temperature/january.csv

data/estonia/temperature/july.csv

data/estonia/temperature/june.csv