Table 1.
Results of a multiple linear regression analysis investigating the number of tail lifts against the calendar month, full moon, new moon, K index, daily mean temperature, daily mean humidity, and daily mean atmospheric pressure in the ELF-EMF group.
| Variable | First Period (8 Months) | Second Period (16 Months) | ||||
|---|---|---|---|---|---|---|
| Coefficient (B) | SE * | P | Coefficient (B) | SE | P | |
| Full moon | 6.9 | 3.1 | 0.03 | 5.5 | 2.5 | 0.03 |
| New moon | 4.2 | 3.1 | 0.18 | 0.8 | 2.5 | 0.76 |
| Daily mean temperature | – | – | – | 1.20 | 0.27 | <0.0001 |
| Daily mean humidity | – | – | – | 0.08 | 0.08 | 0.33 |
| Daily mean atmospheric pressure | – | – | – | −0.04 | 0.10 | 0.73 |
| K index | 0.15 | 0.09 | 0.07 | −0.02 | 0.08 | 0.78 |
| January | – | – | – | −0.3 | 2.0 | 0.88 |
| February | – | – | – | 4.4 | 2.1 | 0.04 |
| March | – | – | – | 11.1 | 2.1 | <0.0001 |
| April | 9.3 | 4.9 | 0.06 | 4.9 | 2.4 | 0.04 |
| May | 12.3 | 2.6 | <0.0001 | 10.3 | 3.2 | 0.001 |
| June | 6.5 | 2.6 | 0.01 | 0.2 | 3.4 | 0.94 |
| July | −1.4 | 2.6 | 0.60 | −6.0 | 3.6 | 0.09 |
| August | −1.3 | 2.6 | 0.62 | −5.6 | 3.5 | 0.11 |
| September | 0.1 | 2.6 | 0.98 | −4.9 | 3.2 | 0.12 |
| October | −1.8 | 2.6 | 0.48 | 1.3 | 2.8 | 0.65 |
| November | 1.8 | 2.6 | 0.50 | 2.2 | 2.4 | 0.38 |
| December | Reference | Reference | ||||
* SE: standard error.