| Solar cycle 23 ( May 1996-Jan 2008) | ||||||||||
| IMF & geomagnetic parameters | Positive polarity (1996-1998) | Negative polarity (2001-2008) | ||||||||
| Toward days | Away days | T-A | Toward days | Away days | T’-A’ | |||||
| No. of Days | Average | No. of Days | Average | Average | No. of Days | average | No. of Days | average | Average | |
| IMF (nT) | 387 | 5.88 ± 0.5 | 438 | 5.89 ± 0.5 | −0.01 ± 0.6 | 1127 | 6.27 ± 0.5 | 1192 | 6.23 ± 0.5 | 0.04 ± 0.7 |
| aa | 387 | 17.26 ± 1.4 | 438 | 18.5 ± 1.5 | −1.24 ± 2 | 1127 | 21.37 ± 2.1 | 1192 | 23.43 ± 3.1 | −2.06 ± 3.5 |
| Ap | 387 | 8.75 ± 0.8 | 438 | 9.76 ± 0.8 | −1.01 ± 1.3 | 1127 | 11.26 ± 1.2 | 1192 | 12.87 ± 1.8 | −1.6 ± 2.2 |
| Kp | 387 | 17.47 ± 1.3 | 438 | 18.57 ± 1.3 | −1.11 ± 1.7 | 1127 | 20.44 ± 1.7 | 1192 | 21.93 ± 2 | −1.49 ± 2.6 |
| DST | 387 | 13.74 ± 1.5 | 438 | 13.51 ± 1 | 0.23 ± 1.8 | 1127 | 14.18 ± 1.7 | 1192 | 15.59 ± 2 | −1.41 ± 2.6 |