2014 Mixing Height Average Std Dev By Local Daylight Time By Local Daylight Time and Season January 686.1 444.3 Hour Annual Std Dev Winter Avg Spring Avg Summer Avg Fall Avg February 721.2 453.4 1 392.6 376.3 445.1 500.0 268.6 357.5 March 839.0 638.6 2 383.3 323.4 465.6 422.2 284.0 363.2 April 1050.3 976.1 3 393.6 341.9 436.2 429.5 320.1 389.6 May 1137.0 1247.5 4 397.6 381.6 412.8 488.6 325.7 363.3 June 1218.6 1266.9 5 377.3 306.8 360.3 469.8 299.6 379.4 July 1074.3 1101.7 6 379.2 304.4 403.5 397.1 303.7 413.3 August 1001.1 1065.5 7 384.6 309.8 393.2 428.3 310.2 407.1 September 932.4 1026.5 8 440.8 400.4 460.9 507.6 379.8 415.2 October 759.9 763.7 9 517.5 450.9 469.2 604.2 581.2 412.1 November 655.3 579.9 10 796.6 661.6 554.9 835.9 1174.1 614.5 December 547.7 427.9 11 1157.4 864.7 696.4 1236.7 1742.3 941.8 12 1382.6 944.3 809.3 1511.0 2035.0 1160.1 Annual 885.7 13 1506.8 937.9 930.5 1678.6 2003.2 1401.2 Max 8815.0 14 1632.3 944.5 1001.0 1828.7 2170.9 1513.2 Min 120.0 15 1684.3 842.9 1058.4 1871.9 2172.8 1619.7 Std Dev 910.8 16 1744.1 899.9 1096.8 1993.2 2286.1 1704.7 17 1923.6 1113.0 1132.7 2199.4 2619.5 1723.4 18 1828.8 1137.8 1081.6 2212.2 2512.9 1488.5 19 1443.3 1176.4 754.8 1996.7 2034.5 966.9 20 791.1 893.5 595.7 837.1 1108.1 617.1 21 453.6 524.1 533.5 393.5 480.2 408.4 22 421.2 440.5 506.6 427.8 369.8 382.0 23 408.6 397.4 512.9 486.1 283.4 353.9 24 385.4 362.8 471.0 443.2 254.1 375.1 2014 Synoptic Pressure Gradient 850 mb Wind Speed (kts) Average Std Dev Average Std Dev January 0.014 0.009 January 26.4 12.0 February 0.013 0.007 February 22.0 11.3 March 0.011 0.009 March 18.6 10.9 April 0.010 0.006 April 23.6 11.2 May 0.007 0.003 May 19.1 8.9 June 0.005 0.003 June 14.6 8.0 July 0.005 0.003 July 13.9 7.5 August 0.004 0.002 August 12.4 6.2 September 0.005 0.003 September 11.9 6.9 October 0.008 0.004 October 15.2 6.3 November 0.013 0.008 November 25.6 13.3 December 0.012 0.006 December 20.5 9.4 Annual 0.009 0.006 Annual 18.9 9.3