YEAR,Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep,Oct,Nov,Dec,Annual 24-hr Avg.
1990,2820,3202,3714,4167,4201,5569,6209,5235,4377,3894,3518,2738,4142
1991,2874,3385,3654,3983,4620,5615,6714,5842,4762,4369,3595,3449,4413
1992,3461,3630,4336,4600,5631,5933,6125,5365,4425,4514,3812,3790,4653
1993,3442,3641,4362,4721,5869,5884,6531,6032,5267,4859,4131,4027,4906
1994,3826,3988,4763,5154,5962,6863,7280,6092,5366,5269,4480,4045,5266
1995,4054,4380,4857,5352,5961,6665,7213,7029,5863,5496,4580,4202,5471
1996,4122,4577,4939,5712,6257,7184,7631,6824,5781,5625,4935,3882,5622
1997,3060,3369,3523,3939,4261,4286,4657,4629,3905,3571,3295,3086,3798
1998,3019,3331,3616,4062,3984,4293,4774,4568,3741,3359,2950,2965,3722
1999,2959,2958,3319,3797,3947,4227,4616,4261,3684,3131
2000,,,3813,4036,3769,4412,4645,4462,3891,3823,3869,3434
2001,3176,3396,3858,4386,4367,4690,4738,4641,4172,3826,3459,3204,3993
2002,3109,3316,3487,4154,4284,4639,5053,4487,4015,3835,3677,3514,3964
2003,3517,3597,3742,4152,4459,4804,5263,4657,4130,3889,3505,3499,4101
2004,3230,3469,3893,4307,4394,4875,5125,4600,4105,3969,3694,3722,4115
2005,3509,3788,3916,4275,4443,4660,5071,4736,4146,3974,3667,3575,4147
2006,3530,3829,3794,4392,4612,4670,5051,4648,4246,4038,3803,3634,4187
2007,3603,3750,4046,4392,4560,4860,4985,4693,4315,4197,3936,3698,4253
2008,3496,3783,4118,4787,4766,4968,5121