2004 Mixing Height Data (adjusted)

Monthly Avg    Std Dev  By Time of Day  By Time of Day and Season
Jan     452.2   336.0    Hour  Annual Avg  Std Dev  Winter Avg  Spring Avg  Summer Avg  Fall Avg
Feb     440.7   304.7     1    359         319      365          415          279         378
Mar     724.8   672.1     2    358         287      375          394          286         376
Apr     683.4   694.3     3    353         270      367          389          295         359
May     735.5   807.8     4    370         281      395          396          317         371
Jun     712.6   812.7     5    365         236      394          370          321         375
Jul     689.8   702.9     6    357         263      373          385          308         365
Aug     712.5   719.0     7    342         253      369          351          293         356
Sep     616.7   572.0     8    347         232      341          357          323         367
Oct     525.1   431.4     9    368         224      354          398          336         383
Nov     454.1   350.5    10    428         355      404          401          425         483
Dec     432.4   352.5    11    544         451      441          557          640         536
                         12    731         571      467          832          946         675
Annual  Max   5097.0     13    900         657      494         1123         1160         816
        Min    100.0     14    998         702      557         1203         1342         883
        Avg    598.2     15   1108         766      579         1323         1558         986
        St Dv  609.8     16   1095         716      604         1337         1440         993
                         17   1119         768      600         1385         1485         999
                         18   1075         862      598         1501         1514         679
                         19    898         779      468         1260         1337         484
                         20    741         787      857         1054         1030         404
                         21    432         504      428          539          416         346
                         22    363         375      410          417          286         352
                         23    357         329      368          394          312         354
                         24    349         302      371          356          293         374