. 2020 Nov 19;10:20171. doi: 10.1038/s41598-020-77183-y

Table 2.

Root Mean Square Error (RMSE) values of the 13 empirical models for calculating ET_o,i at the monthly and annual timescales for Bangladesh. The bold values indicate the optimal model among other models.

ET_o,i	ET_0,1	ET_0,2	ET_0,3	ET_0,4	ET_0,5	ET_0,6	ET_0,7	ET_0,8	ET_0,9	ET_0,10	ET_0,11	ET_0,12	ET_0,13
Month/year
Jan	0.8428	0.6065	0.2472	1.2001	3.6024	0.6445	0.7391	1.2053	1.4635	1.2277	0.5630	1.2919	2.1696
Feb	0.1778	0.2978	0.5039	0.5073	3.5384	0.1224	0.1562	0.5903	0.8282	0.3469	0.7474	0.6696	3.0446
Mar	0.8772	1.2064	0.7722	0.3474	3.4644	0.5213	0.6215	0.1384	0.2671	0.7748	2.0732	0.1221	3.9983
Apr	1.2023	1.6439	0.9778	0.5885	3.4517	0.1097	1.0133	0.3032	0.2066	1.5978	3.0151	0.4335	4.4995
May	1.1439	1.6483	0.7211	0.5334	3.4982	0.2788	0.9108	0.2805	0.2841	1.5718	2.8234	0.3941	4.2382
Jun	0.5031	1.0590	0.3541	0.2434	3.5659	0.2386	0.4159	0.5439	0.7337	0.8229	1.7057	0.3194	3.3993
Jul	0.3903	0.7151	0.3648	0.4633	3.5911	0.2045	0.3112	0.6522	0.8568	0.6409	1.4344	0.2689	3.1328
Aug	0.3050	0.6421	0.5209	0.5180	3.5873	0.2181	0.3912	0.5703	0.7650	0.7311	1.6220	0.2223	3.2419
Sep	0.2573	0.3774	0.5441	0.6840	3.5962	0.2237	0.2989	0.6237	0.8279	0.5066	1.4465	0.2449	3.0685
Oct	0.4074	0.1889	0.6452	0.8218	3.5926	0.2847	0.3048	0.5850	0.7819	0.3394	1.4457	0.2989	2.9804
Nov	0.6533	0.3651	0.4289	1.0397	3.5916	0.1981	0.2054	0.8368	1.0631	0.5793	0.6273	0.7131	2.5004
Dec	0.9907	0.7483	0.2197	1.3340	3.6142	0.1554	0.7190	1.2593	1.5035	1.2897	0.5162	1.2602	2.0195
Year	0.1045	0.4872	0.5062	0.4441	3.5580	0.0484	0.2064	0.5317	0.7337	0.2805	1.3012	0.3444	3.1848