Table 5.6-1. Monthly and annual atmospheric pressure averages and daily pressure extremes for CFA(a).

                          Average     Average     Extreme     Extreme
              Monthly      Daily       Daily       Daily       Daily
              Average     Maximum     Minimum     Maximum     Minimum
             (in. Hg)    (in. Hg)    (in. Hg)    (in. Hg)    (in. Hg)

January        25.07       25.16       24.98       25.63       24.33
February       25.04       25.13       24.95       25.68       24.40
March          25.00       25.08       24.91       25.59       24.46
April          24.97       25.06       24.89       25.46       24.50
May            24.99       25.06       24.92       25.44       24.46
June           25.02       25.08       24.95       25.41       24.60
July           25.09       25.14       25.02       25.38       24.66
August         25.10       25.16       25.03       25.40       24.73
September      25.08       25.15       25.01       25.51       24.66
October        25.08       25.16       24.99       25.54       24.46
November       25.09       25.18       25.00       25.58       24.51
December       25.09       25.19       25.00       25.65       24.47

ANNUAL         25.05       25.13       24.97       25.68       24.33

a. Data period of record spans April 1993 through March 2006.