| Region 1 | Region 2 | Region 3 | |||||||||
| Measured Data Hmeasured | Country Model Hest | Turton’s Model Htur | Rietveld’s Model HRiet | Measured Data Hmeasured | Country Model Hest | Turton’s Model Htur | Rietveld’s Model HRiet | Measured Data Hmeasured | Country Model Hest | Turton’s Model Htur | Rietveld’s Model HRiet |
| 4.03 | 3.78 | 4.63 | 4.51 | 4.78 | 4.96 | 5.43 | 5.86 | 5.96 | 6.29 | 5.25 | 5.68 |
January | 4.43 | 4.25 | 5.00 | 4.94 | 5.35 | 5.32 | 5.85 | 6.33 | 6.44 | 6.62 | 5.62 | 6.05 |
February | 3.85 | 3.83 | 4.97 | 4.76 | 4.35 | 4.16 | 5.39 | 5.43 | 6.66 | 6.26 | 5.77 | 6.05 |
March | 3.94 | 4.04 | 5.10 | 4.92 | 4.38 | 4.20 | 5.52 | 5.56 | 7.30 | 6.32 | 5.95 | 6.21 |
April | 3.75 | 3.72 | 4.89 | 4.66 | 3.83 | 3.79 | 5.25 | 5.20 | 6.60 | 6.34 | 5.98 | 6.23 |
May | 3.77 | 2.63 | 4.36 | 3.90 | 3.26 | 3.28 | 4.96 | 4.74 | 5.72 | 5.72 | 5.74 | 5.88 |
June | 1.81 | 1.64 | 3.96 | 3.26 | 2.58 | 2.61 | 4.64 | 4.22 | 4.51 | 4.67 | 5.38 | 5.30 |
July | 1.42 | 1.24 | 3.88 | 3.06 | 2.46 | 2.56 | 5.63 | 4.17 | 4.48 | 4.83 | 5.44 | 5.40 |
October | 2.22 | 2.21 | 4.31 | 3.71 | 2.90 | 3.07 | 4.86 | 4.56 | 5.05 | 5.47 | 5.57 | 5.68 |
November | 2.79 | 2.80 | 4.44 | 4.02 | 3.70 | 3.70 | 5.04 | 5.00 | 6.20 | 6.32 | 5.62 | 5.96 |
December | 3.61 | 3.49 | 4.55 | 4.25 | 5.01 | 4.99 | 5.50 | 5.93 | 6.77 | 6.68 | 5.46 | 5.95 |
| 3.95 | 3.68 | 4.52 | 4.41 | 4.91 | 4.97 | 5.38 | 5.86 | 5.90 | 6.20 | 5.14 | 5.57 |