Year,Jan.,Feb.,Mar.,Apr.,May.,Jun.,Jul.,Aug.,Sep.,Oct.,Nov.,Dec.,24-Hour Annual Avg.,
1999,,,,,,,,,,3759,2997,2464,,
2000,2157,2489,2803,3067,3382,3498,3528,3431,3395,3572,2815,2477,3051,
2001,2204,2409,2796,3124,3649,3648,3738,3645,3597,3747,3081,2467,3175,
2002,2377,2604,2849,3222,3721,3932,,3728,3449,3459,3031,2627,,
2003,2460,2756,2911,3161,3732,4011,4043,3796,3705,3853,3061,2694,3349,
2004,2224,2648,3088,3438,3677,3839,3988,3943,3806,3861,3081,2754,3362,
2005,2462,2865,3142,3307,3729,3997,4313,4050,3716,3805,3149,2703,3437,
2006,2523,2816,2996,3463,3803,4172,4160,4005,4057,4082,3316,2864,3521,
2007,2736,2924,3352,3551,4006,4161,4195,4117,4263,4028,3289,2782,3617,
2008,2338,2622,3010,3220,3664,3824,3864,3790,3584,3757,3234,2584,3291,
2009,2423,2711,3008,3387,3922,4041,4269,3976,3952,3868,3184,2614,3446,
2010,2437,2752,3039,3244,3681,3960,4190,3973,3899,3950,2956,2410,3374,
2011,2473,2595,2786,3223,3371,3779,4193,3996,3728,3662,2986,2627,3285,
2012,2375,2583,2778,3066,3527,3855,3947,4160,3653,3626,2994,2605,3264,
2013,2292,2578,2958,3117,3607,3804,3868,3679,3780,3729,3018,2492,3243,
2014,2322,2441,2971,3145,3688,3940,3979,3785,3698,3804,3058,2634,3289,
2015,2486,2884,3260,3377,3953,4141,4311,3929,4039,4002,3256,2664,3525,
2016,2527,2790,3185,3578,4058,4248,4321,4190,4237,4086,3478,2587,3607,
2017,2209,2607,3140,3588,4198,4296,4476,4541,4084,4076,3383,2887,3624,
2018,2702,2878,3231,3613,4283,4489,4614,4376,4329,4254,3606,3033,3784,
2019,2873,2683,3412,3802,4332,4635,4732,4493,4372,4210,3525,3110,3848,
2020,2861,3176,3195,3062,4370,4743,4923,4991,5387,5240,3905,3328,4098,
2021,3151,3204,4887,4747,5297,5683,5442,5130,5282,5134,5393,3807,4763,
2022,3306,3457,3863,4208,4931,5209,5263,4908,5071,4943,3905,3150,4351,
2023,3223,3385,3608,4089,4894,5413,5470,4419,5123,4916,4180,3478,4350,
2024,2938,3560,3761, , , , , , , , , , ,