YEAR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual 24-hr Avg.
2006          4087 3062 2863
2007 2960 3079 2849 2905 3991 5112 6317 5594 4215 3762 3031 2711 3877
2008 2579 2708 2463 2194 3058 4376 5811