| Month | Max | Min | Average | Variance | Std. Deviation |
| January | 1.39E−09 | 1.10E−09 | 1.21E−09 | 1.24E−20 | 1.11E−10 |
| February | 1.33E−09 | 9.96E−10 | 1.11E−09 | 1.05E−20 | 1.02E−10 |
| March | 1.55E−09 | 9.92E−10 | 1.23E−09 | 2.02E−20 | 1.42E−10 |
| April | 1.62E−09 | 1.18E−09 | 1.30E−09 | 1.45E−20 | 1.21E−10 |
| May | 1.49E−09 | 1.17E−09 | 1.32E−09 | 1.05E−20 | 1.02E−10 |
| June | 1.56E−09 | 1.29E−09 | 1.41E−09 | 1.06E−20 | 1.03E−10 |
| July | 1.71E−09 | 1.31E−09 | 1.56E−09 | 1.05E−20 | 1.02E−10 |
| August | 1.81E−09 | 1.36E−09 | 1.58E−09 | 1.23E−20 | 1.11E−10 |
| September | 1.72E−09 | 1.28E−09 | 1.50E−09 | 1.78E−20 | 1.33E−10 |
| October | 1.72E−09 | 1.31E−09 | 1.51E−09 | 1.75E−20 | 1.32E−10 |
| November | 1.49E−09 | 1.13E−09 | 1.37E−09 | 8.75E−21 | 9.35E−11 |
| December | 1.53E−09 | 1.10E−09 | 1.25E−09 | 2.31E−20 | 1.52E−10 |