| BOA_IMPACT | ATM_IMPACT | TOA_IMPACT | ∆T_1st_layer | |
| January | −34.3 | 31.7 | −2.5 | 1.7 |
| February | −30.9 | 27.2 | −3.6 | 1.5 |
| March | −41.0 | 34.7 | −6.2 | 1.8 |
| April | −35.8 | 31.3 | −4.5 | 1.7 |
| May | −33.6 | 27.5 | −6.0 | 1.5 |
| June | −32.9 | 26.1 | −6.7 | 1.4 |
| July | −28.6 | 25.4 | −3.2 | 1.4 |
| August | −21.6 | 15.3 | −6.3 | 0.8 |
| September | −24.6 | 20.5 | −4.1 | 1.2 |
| October | −27.0 | 20.2 | −6.8 | 1.1 |
| November | −23.4 | 18.7 | −4.6 | 1.0 |
| December | −24.9 | 22.3 | −2.5 | 1.3 |