| 1944-49 | 1950-59 | 1960-69 | 1970- 79 | 1980-89 | 1990-91
| Wind |
speed |
| Mean | Std dev | | Mean | Std dev | | Mean | Std dev | | Mean | Std dev | | Mean | Std dev | | Mea
n | Std dev |
(kt) | (m s-1) | (No.) | (mb) | (mb) | (No.) | (mb) | (mb) |
(No.) | (mb) | (mb) |
(No.) | (mb) | (mb) |
(No.) | (mb) | (mb) |
(No.) | (mb) | (mb) |
100 | 51 | (1) | 965 | -- | (10) |
969 | 21 | (51) | 968 | 10 | (13) | 967 | 8 |
(30) | 961 | 9 | (4) | 958 | 4 |
105 | 54 | (2) | 970 | 7 | (12) | 964 | 13 | (29) | 962 | 13 | (8) | 960 | 3 | (18) | 958 | 6 | (2) | 954 | 2 |
110 | 54 | (2) | 970 | 7 | (21) | 958 | 15 | (52) | 961 | 12 | (12) | 954 | 9 | (22) | 953 | 6 | (1) | 946 | -- |
115 | 59 | (3) | 952 | 8 | (5) | 963 | 23 | (22) | 956 | 14 | (8) | 949 | 5 | (17) | 949 | 7 | (1) | 947 | -- |
120 | 62 | (2) |
967 | 1 | (3) | 961 | 8 | (33) | 950 | 11 | (8) | 947 | 8 | (26) | 940 | 8 |
125 | 64 | | | | (13) | 958 | 13 | (17) | 943 | 9 | (5) | 937 | 4 | (12) | 938 |
9 |
130 | 67 | (1) | 954 | -- | (4) | 941 | 10 | 939 | 12 | (5) | 937 | 9 | (6) | 934 | 7 |
135 | 69 | (1) | 947 | -- | (3) | 947 | 25 | (5) | 942 | 10 | | | | (2) | 934 |
7 |
140 | 72 | | | | (2) | 943 | 5 | (6) | 928 | 15 | (3) | 933 | 7 | (5) | 919 | 14
|
145 | 75 | | | | | | |
1 | 935 | -- | (4) | 926 | 2 | (4) | 914 | 15 |
150 | 77 | | | | | | | (
1) | 935 | -- | (3) | 925 | 1 | (1) | 940 | -- |
155 | 80 | | | | | | |
| | | | | | (5) | 912 | 14 |
160 | 82 | | | | | | |
| | | | | | (1) | 888 | -- |
165 | 85 | | | | | | |
| (1) | 909 | --- | | | (1) | 899 | -- |
| |||||||||||||||
Table 4 Decadel means and standard deviations for observed minimum pressure values of intense Atlantic basin hurricanes by 5-kt (2.5 m s-1) intervals since 1944. The number of observations per decade are given in parentheses.