| R2 | d | RMSE (mm d−1) | RRSME (%) | |
| HS 2011 | 0.88 | 0.95 | 1.25 | 29% |
| HS 2012 | 0.91 | 0.97 | 0.86 | 22% |
| HS 2013 | 0.89 | 0.97 | 0.99 | 24% |
| HS 2014 | 0.86 | 0.96 | 1.16 | 28% |
| HS 2015 | 0.86 | 0.95 | 1.29 | 30% |
| HS 2016 | 0.91 | 0.96 | 1.05 | 24% |
| HSm 2016 | 0.92 | 0.96 | 0.87 | 20% |
| HS 2017 | 0.88 | 0.95 | 1.16 | 28% |
| HSm 2017 | 0.89 | 1.00 | 1.00 | 24% |