| Original Data Set | Bias-Removed Data Set | |||||||
| Intense | Intense | Intense | Intense | |||||
| Hurricanes | Hurricane Days | Hurricanes | Hurricane Days | |||||
| Period | Mean | SD | Mean | SD | Mean | SD | Mean | SD |
| 1944-69 | 3.19 | 2.00 | 7.96 | 5.51 | 2.69 | 1.66 | 6.18 | 4.74 |
| 1970-91 | 1.64 | 0.88 | 2.67 | 2.88 | 1.64 | 0.90 | 2.67 | 2.88 |
| 1944-91 | 2.48 | 1.77 | 5.54 | 5.21 | 2.21 | 1.47 | 4.57 | 4.37 |
| Ratio 44-69/70-91 | 1.9 | - | 3.0 | - | 1.6 | - | 2.3 | - |
Table 6 Summary of climatology of IH activity, both for the original data set and with the bias removed.