YEAR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual 24-hr Avg.
2004     908 964 938 908 1025 891 782 710
2005 648 755 823 925 930 997 962 955 1046 915 984 816 896
2006 812 837 822 917 936 928 953 949 997 1049 1037 768 917
2007 901 758 832 896 955 970 961 949 1071 1037 1066 718 926
2008 650 709 742 904 915 886 887