2009 Mixing Height Data

Monthly Avg    Std Dev   By Local Time of Day      By Local Time of Day and Season
Jan     381.3    326.5   Hour  Annual Avg  Std Dev Winter Avg  Spring Avg  Summer Avg  Fall Avg
Feb     511.5    459.0    1     247         215       292         237         223         238
Mar     514.3    525.7    2     238         167       258         253         200         240
Apr     771.0    955.9    3     242         169       249         262         208         250
May     654.1    681.4    4     235         155       234         251         220         238
Jun     742.2    873.4    5     242         177       250         257         210         244
Jul     770.7    859.3    6     240         170       262         261         207         225
Aug     734.5    852.6    7     240         176       258         269         212         226
Sep     599.1    705.7    8     243         179       250         281         226         214
Oct     430.6    369.0    9     298         222       308         360         268         263
Nov     355.4    341.7   10     419         334       332         473         559         307
Dec     361.9    310.0   11     705         514       420         772        1119         500
                         12     897         582       531         997        1343         705
Annual  Max     7218.8   13    1076         722       616        1218        1558         900
        Min       55.0   14    1224         819       668        1351        1838        1026
        Avg      568.8   15    1286         811       758        1399        1879        1094
        St Dev   667.0   16    1317         851       773        1487        1891        1104
                         17    1350         935       867        1595        1886        1038
                         18    1165         943       676        1494        1673         804
                         19     740         843       457         983        1175         336
                         20     313         363       356         323         355         217
                         21     241         237       297         244         206         218
                         22     239         206       301         249         171         231
                         23     229         164       285         237         173         222
                         24     226         153       264         233         179         231