| Solar cycle 22 (Sep 1986-May 1996) | ||||||||||
| IMF & geomagnetic parameters | Positive polarity (1991-1996) | Negative polarity (1986-1988) | ||||||||
| Toward days | Away days | T-A | Toward days | Away days | Tâ-Aâ | |||||
| No. of Days | Average | No. of Days | Average | Average | No. of Days | average | No. of Days | average | Average | |
| IMF (nT) | 652 | 6.72 ± 0.5 | 630 | 6.92 ± 0.7 | â0.20 ± 0.8 | 256 | 6.75 ± 0.5 | 235 | 6.64 ± 0.3 | 0.28 ± 0.5 |
| aa | 652 | 27.04 ± 2.1 | 630 | 25.2 ± 2.8 | 1.84 ± 3.5 | 256 | 22.11 ± 0.7 | 235 | 20.62 ± 1 | 1.49 ± 1.2 |
| Ap | 652 | 15.80 ± 1.6 | 630 | 14.5 ± 1.8 | 1.3 ± 2.4 | 265 | 12.38 ± 0.3 | 235 | 11.76 ± 0.4 | 0.62 ± 0.6 |
| Kp | 652 | 25.87 ± 1.6 | 630 | 24.20 ± 1.8 | 1.67 ± 2 | 265 | 22.23 ± 0.2 | 235 | 22.21 ± 0.7 | 0.01 ± 0.7 |
| DST | 652 | 20.09 ± 1.8 | 630 | 19.33 ± 2 | 0.76 ± 2.6 | 256 | 15.78 ± 2.1 | 235 | 16.42 ± 2.1 | â0.64 ± 3.1 |