Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1995,,,,,,,,4098,3884,3560,3088,2841,,
1996,2317,1984,3108,3292,3383,3671,3914,3949,3731,3672,,,,
1997,,,,3140,3500,3746,4087,3983,3679,3561,3187,3015,,
1998,2585,2992,3077,3313,3605,3797,4000,3994,3796,3607,3160,2948,3406,
1999,2730,,,,3754,3864,4058,4066,3875,3629,3272,3119,,
2000,2825,3077,3130,3430,3735,3902,4019,3693,3599,3499,3174,2815,3408,
2001,2777,2989,3133,3352,3842,3917,3938,4075,3794,3613,3310,2986,3477,
2002,2848,3101,3093,3314,3780,3965,4040,4081,3876,3727,3316,3103,3520,
2003,2924,3123,2964,3333,3781,3913,4036,3802,3883,3831,3239,3106,3495,
2004,2639,3129,3300,3521,3671,3860,4096,3959,3752,3608,3255,3133,3494,
2005,2769,3146,3172,3248,3590,3822,3898,3900,3602,3386,3135,2909,3381,
2006,2775,3060,3155,3242,3466,3725,3724,3723,3596,3396,2979,2902,3312,
2007,2594,2913,3085,3253,3484,3626,3748,3818,3673,3447,3166,2737,3295,
2008,2519,2762,2846,3000,3293,3325,3435,3500,3414,3362,3091,2626,3098,
2009,2817,2877,2771,3112,3431,3704,3852,3741,3819,3531,3197,2850,3309,
2010,2789,3054,3017,3156,3470,3638,3934,3907,3820,3562,3037,2866,3354,
2011,2853,3024,2914,3071,3278,3580,3788,3941,3867,3468,3091,2848,3310,
2012,2526,2900,2829,2972,3308,3566,3733,3735,3534,3356,3045,2858,3197,
2013,2552,2934,2938,3034,3394,3563,3763,3747,3539,,3081,2637,,
2014,2618,2585,2839,3119,3411,3624,3904,3863,3752,3634,3208,2950,3292,
2015,2797,2951,3106,3305,3773,3867,3996,,3875,3745,3271,2958,,
2016,2919,3193,3150,3440,3883,4079,4148,4250,3956,3657,3510,2806,3583,
2017,2655,2938,2992,3239,3556,3898,4067,3849,3693,3651,3308,2915,3397,
2018,2853,2973,3068,3277,3769,3994,4085,4041,3817,3598,3378,3052,3492,
2019,2976,2636,3034,3237,3779,4020,4193,4141,3896,3643,3353,2994,3492,
2020,2844,3090,2696,2522,3403,3815,4197,4210,4132,3702,3170,3036,3401,
2021,3090,2845,3341,3609,4064,4298,4287,4285,4019,4011,3496,2879,3685,
2022,2738,3192,3185,3366,3782,3897,4024,4105,4018,3880,3333,2852,3531,
2023,3093,3250,3260,3436,3995,4337,4272,4147,4066,3881,3445,3123,3692,
2024,2712,3110,3204, , , , , , , , , , ,