May - September (0)
| < -4 |
| -4 to -3 |
| -3 to -2 |
| -2 to -1 |
| -1 to 0 |
| 0 to 1 |
| 1 to 2 |
| > 2 |
April - June (1)
| < -4 |
| -4 to -3 |
| -3 to -2 |
| -2 to -1 |
| -1 to 0 |
| 0 to 1 |
| 1 to 2 |
| > 2 |
September (2)
| < -2 |
| -2 to -1.5 |
| -1.5 to -1 |
| -1 to -0.5 |
| -0.5 to 0 |
| 0 to 0.5 |
| 0.5 to 1 |
| > 1 |
August (3)
| < -2 |
| -2 to -1.5 |
| -1.5 to -1 |
| -1 to -0.5 |
| -0.5 to 0 |
| 0 to 0.5 |
| 0.5 to 1 |
| > 1 |
July (4)
| < -2 |
| -2 to -1.5 |
| -1.5 to -1 |
| -1 to -0.5 |
| -0.5 to 0 |
| 0 to 0.5 |
| 0.5 to 1 |
| > 1 |
June (5)
| < -2 |
| -2 to -1.5 |
| -1.5 to -1 |
| -1 to -0.5 |
| -0.5 to 0 |
| 0 to 0.5 |
| 0.5 to 1 |
| > 1 |
May (6)
| < -2 |
| -2 to -1.5 |
| -1.5 to -1 |
| -1 to -0.5 |
| -0.5 to 0 |
| 0 to 0.5 |
| 0.5 to 1 |
| > 1 |
April (7)
| < -2 |
| -2 to -1.5 |
| -1.5 to -1 |
| -1 to -0.5 |
| -0.5 to 0 |
| 0 to 0.5 |
| 0.5 to 1 |
| > 1 |
|