Table 3. Climatological validation using independent climate station data.

	Austria		China		FAO		Mexico		Scandinavia
	mean	s.d.	mean	s.d.	mean	s.d.	mean	s.d.	mean	s.d.
Values in square brackets indicate that the data has been used in the station interpolation algorithm of the respective dataset and is therefore not valid for an independent evaluation. Values represent means over all months.
CHELSA-R2	0.38	0.06	0.62	0.08	0.92	0.01	0.79	0.03	0.87	0.04
CHPclim-R2	0.38	0.05	0.59	0.09	0.92	0.03	0.65	0.16	0.50	0.23
CRU-R2	0.34	0.02	0.64	0.10	0.48	0.26	0.45	0.11	0.86	0.11
ERA-R2	0.32	0.04	0.57	0.11	0.65	0.03	0.51	0.07	0.59	0.17
WorldClim-R2	0.30	0.06	0.61	0.10	[0.93]	[0.02]	[0.83]	[0.02]	[0.81]	[0.11]
CHELSA-RMSE	25.71	1.29	17.23	2.77	24.55	3.94	28.13	17.60	14.44	5.54
CHPclim-RMSE	25.70	1.28	16.86	2.38	28.97	20.23	36.23	27.98	27.55	9.97
CRU-RMSE	26.56	0.97	15.40	2.07	58.94	26.24	43.73	24.06	13.55	3.84
ERA-RMSE	26.95	1.06	16.89	2.26	49.21	11.00	42.36	25.71	25.15	7.60
WorldClim-RMSE	27.39	1.50	16.46	2.56	[20.61]	[3.65]	[24.53]	[14.44]	[16.74]	[6.16]
CHELSA-MAE	19.37	0.97	12.56	2.62	13.24	1.68	16.98	12.10	9.57	3.31
CHPclim-MAE	19.15	0.92	12.24	2.07	14.67	15.10	22.83	20.84	19.02	6.43
CRU-MAE	19.78	0.83	10.09	1.89	39.96	19.72	27.56	17.32	9.56	2.84
ERA-MAE	20.04	0.86	11.81	2.38	27.09	4.39	26.97	18.57	15.71	4.20
WorldClim-MAE	20.19	1.26	11.94	2.17	[10.44]	[1.38]	[14.44]	[9.23]	[10.38]	[3.70]