YEAR MONTH MEAN STDEV COUNT 2002 1 nan nan 0 2002 2 nan nan 0 2002 3 nan nan 0 2002 4 nan nan 0 2002 5 nan nan 0 2002 6 nan nan 0 2002 7 2.86171e+00 1.10918e+00 62 2002 8 3.25396e+00 2.43658e+00 110 2002 9 3.67205e+00 1.29967e+00 57 2002 10 3.14243e+00 1.50301e+00 304 2002 11 5.45460e+00 2.47311e+00 317 2002 12 5.81924e+00 2.87713e+00 324 2003 1 6.65073e+00 3.15997e+00 510 2003 2 6.66383e+00 2.68645e+00 381 2003 3 3.78327e+01 8.46189e+00 10 2003 4 1.77629e+01 7.10469e+00 135 2003 5 nan nan 0 2003 6 1.03417e+01 6.10693e+00 33 2003 7 9.95465e+00 5.77121e+00 46 2003 8 2.91550e+01 6.19963e+00 10 2003 9 6.36253e+00 4.67904e+00 123 2003 10 4.66211e+00 2.19881e+00 301 2003 11 3.65696e+00 1.74822e+00 456 2003 12 6.07687e+00 2.19498e+00 403 2004 1 4.65388e+00 1.77657e+00 428 2004 2 6.64058e+00 3.03763e+00 100 2004 3 1.05097e+01 8.86263e+00 371 2004 4 5.82915e+00 1.62235e+00 251 2004 5 5.68090e+00 3.14434e+00 119 2004 6 3.90686e+00 2.80096e+00 157 2004 7 9.01437e+00 3.79436e+00 15 2004 8 3.37605e+00 1.61120e+00 125 2004 9 7.18820e+00 5.40975e+00 16 2004 10 1.13051e+01 6.73813e+00 8 2004 11 2.19080e+01 1.15668e+01 64 2004 12 9.07547e+00 4.58780e+00 150 2005 1 9.00330e+00 4.43014e+00 238 2005 2 7.33861e+00 5.31951e+00 208 2005 3 5.99366e+00 2.31006e+00 266 2005 4 1.32060e+01 5.56943e+00 122 2005 5 1.12984e+01 9.00602e+00 39 2005 6 9.04571e+00 6.35301e+00 125 2005 7 1.58698e+01 1.06020e+01 41 2005 8 2.07966e+01 0.00000e+00 1 2005 9 5.07179e+00 1.03431e+00 79 2005 10 5.33040e+00 2.58868e+00 245 2005 11 4.20804e+00 1.36391e+00 331 2005 12 6.94114e+00 6.66740e+00 384 2006 1 7.71543e+00 3.30358e+00 279 2006 2 1.03808e+01 4.30136e+00 423 2006 3 1.03710e+01 5.50326e+00 477 2006 4 4.44269e+00 2.38546e+00 143 2006 5 4.33179e+00 2.17454e+00 113 2006 6 4.32345e+00 3.01508e+00 67 2006 7 2.76350e+00 1.54448e+00 23 2006 8 4.31727e+00 2.98806e+00 16 2006 9 5.93623e+00 3.56819e+00 242 2006 10 4.46762e+00 4.27913e+00 304 2006 11 3.90678e+00 1.54330e+00 358 2006 12 3.82356e+00 4.69241e+00 228 2007 1 4.06339e+00 1.36346e+00 270 2007 2 4.00071e+00 1.75680e+00 343 2007 3 3.26169e+00 1.05866e+00 592 2007 4 3.41155e+00 1.21676e+00 340 2007 5 3.40681e+00 1.86399e+00 84 2007 6 3.54571e+00 8.99695e-01 44 2007 7 4.76387e+00 5.46149e+00 86 2007 8 5.15383e+00 2.40617e+00 125 2007 9 2.76394e+00 1.65305e+00 75 2007 10 2.28922e+00 9.68509e-01 201 2007 11 2.80599e+00 1.48791e+00 526 2007 12 2.25093e+00 5.98580e-01 260 2008 1 3.90447e+00 2.18748e+00 354 2008 2 2.81240e+00 1.12703e+00 469 2008 3 3.91475e+00 1.31936e+00 346 2008 4 7.22289e+00 2.48582e+00 229 2008 5 3.98044e+00 1.63699e+00 170 2008 6 2.84499e+00 6.84867e-01 79 2008 7 3.87991e+00 2.14685e+00 77 2008 8 6.63276e+00 1.53154e+00 2 2008 9 5.94668e+00 4.33740e+00 83 2008 10 4.32935e+00 1.73611e+00 336 2008 11 4.84363e+00 3.08239e+00 387 2008 12 4.52631e+00 2.05805e+00 397 2009 1 4.80194e+00 2.16123e+00 284 2009 2 4.02240e+00 1.19721e+00 564 2009 3 3.31096e+00 1.10353e+00 311 2009 4 4.96703e+00 2.47977e+00 164 2009 5 1.36566e+01 7.11931e+00 123 2009 6 5.29890e+00 9.20539e-01 20 2009 7 7.11042e+00 3.57941e+00 34 2009 8 6.42500e+00 4.30328e+00 112 2009 9 6.43761e+00 4.80315e+00 183 2009 10 4.99826e+00 4.29784e+00 370 2009 11 3.24959e+00 1.87781e+00 307 2009 12 3.88019e+00 1.79883e+00 151 2010 1 5.79893e+00 1.76310e+00 407 2010 2 1.69229e+01 9.74344e+00 247 2010 3 1.83297e+01 9.55575e+00 379 2010 4 9.02161e+00 4.27142e+00 296 2010 5 9.56920e+00 2.71015e+00 105 2010 6 8.21137e+00 5.28120e+00 69 2010 7 4.97720e+00 1.22180e+00 43 2010 8 nan nan 0 2010 9 3.78829e+00 2.72209e+00 176 2010 10 4.03095e+00 2.28838e+00 607 2010 11 3.44044e+00 1.79238e+00 515 2010 12 4.58926e+00 3.29062e+00 370 2011 1 4.70502e+00 2.91524e+00 350 2011 2 4.01786e+00 3.40268e+00 208 2011 3 4.43079e+00 1.87825e+00 530 2011 4 4.10801e+00 1.36987e+00 301 2011 5 3.23712e+00 1.60553e+00 260 2011 6 3.39463e+00 1.18006e+00 46 2011 7 6.53830e+00 4.98232e+00 48 2011 8 4.19507e+00 2.78737e+00 63 2011 9 2.52002e+00 1.37001e+00 327 2011 10 3.54678e+00 2.44004e+00 408 2011 11 2.75176e+00 9.18244e-01 482 2011 12 2.82648e+00 9.90251e-01 377 2012 1 3.57940e+00 1.53330e+00 478 2012 2 5.53668e+00 1.90662e+00 108 2012 3 3.08780e+00 2.32973e+00 486 2012 4 2.70428e+00 1.13822e+00 327 2012 5 2.66052e+00 1.70797e+00 211 2012 6 2.20947e+00 1.37383e+00 18 2012 7 nan nan 0 2012 8 3.24956e+01 7.80953e+00 5 2012 9 1.78889e+01 1.05264e+01 65 2012 10 1.33045e+01 8.08810e+00 86 2012 11 7.26228e+00 3.00740e+00 393 2012 12 5.66018e+00 2.93753e+00 224 2013 1 5.95595e+00 2.81896e+00 248 2013 2 5.41378e+00 1.72605e+00 239 2013 3 5.84516e+00 1.59474e+00 385 2013 4 6.51002e+00 2.20425e+00 277 2013 5 5.21562e+00 1.80285e+00 220 2013 6 7.01607e+00 5.74151e+00 179 2013 7 2.42999e+01 1.45694e+01 30 2013 8 2.98910e+01 0.00000e+00 1 2013 9 1.51816e+01 1.20397e+01 49 2013 10 9.66426e+00 5.98639e+00 228 2013 11 4.63667e+00 4.78432e+00 138 2013 12 3.45399e+00 1.38569e+00 350 2014 1 4.98934e+00 2.29903e+00 383 2014 2 5.59941e+00 2.21642e+00 450 2014 3 1.00705e+01 5.95347e+00 419 2014 4 2.24703e+01 1.23032e+01 28 2014 5 2.17576e+01 1.02154e+01 52 2014 6 1.50619e+01 1.18800e+01 15 2014 7 8.69267e+00 4.89666e+00 239 2014 8 3.85947e+00 6.39631e-01 42 2014 9 7.07038e+00 2.52983e+00 81 2014 10 5.43901e+00 3.66124e+00 648 2014 11 5.16383e+00 2.20612e+00 456 2014 12 3.87661e+00 1.82355e+00 265 2015 1 3.68755e+00 2.33740e+00 350 2015 2 5.48822e+00 2.55066e+00 481 2015 3 6.57656e+00 2.08093e+00 333 2015 4 6.01986e+00 1.89416e+00 116 2015 5 5.05508e+00 2.42293e+00 170 2015 6 5.92251e+00 3.16316e+00 96 2015 7 8.87699e+00 2.45810e+00 16 2015 8 1.05364e+01 4.02630e+00 23 2015 9 1.38730e+01 1.09601e+01 100 2015 10 3.53616e+00 1.89950e+00 255 2015 11 4.04465e+00 2.08439e+00 201 2015 12 3.83750e+00 1.91841e+00 230 2016 1 5.75507e+00 2.85608e+00 439 2016 2 6.37145e+00 3.63075e+00 625 2016 3 6.25177e+00 2.85425e+00 432 2016 4 4.93141e+00 1.56068e+00 311 2016 5 4.54465e+00 1.73704e+00 193 2016 6 4.10155e+00 1.62099e+00 264 2016 7 6.65528e+00 5.19604e+00 267 2016 8 1.46455e+01 1.02996e+01 116 2016 9 1.21670e+01 1.11576e+01 122 2016 10 7.64327e+00 4.98746e+00 234 2016 11 3.75517e+00 1.72688e+00 414 2016 12 3.56929e+00 1.42087e+00 282 2017 1 4.14143e+00 1.94020e+00 317 2017 2 4.49340e+00 9.52631e-01 478 2017 3 4.52820e+00 2.20603e+00 403 2017 4 5.18443e+00 3.37260e+00 285 2017 5 2.95574e+00 1.16463e+00 128 2017 6 6.58717e+00 1.99634e+00 70 2017 7 5.82627e+00 2.58722e+00 27 2017 8 1.43381e+01 8.92664e+00 144 2017 9 1.06594e+01 7.42601e+00 194 2017 10 1.02852e+01 6.31511e+00 333 2017 11 4.71751e+00 2.53916e+00 507 2017 12 2.76050e+00 1.53669e+00 281 2018 1 3.95545e+00 2.11648e+00 424 2018 2 4.33266e+00 1.10123e+00 273 2018 3 6.10013e+00 4.56352e+00 399 2018 4 4.36278e+00 2.31609e+00 280 2018 5 7.67591e+00 5.64905e+00 190 2018 6 9.18222e+00 2.99660e+00 160 2018 7 5.79218e+00 2.24828e+00 42 2018 8 1.31734e+01 5.04427e+00 47 2018 9 1.57086e+01 1.01280e+01 184 2018 10 7.11929e+00 3.67921e+00 328 2018 11 6.32045e+00 2.74432e+00 122 2018 12 6.66045e+00 3.58043e+00 246 2019 1 1.35634e+01 7.50928e+00 257 2019 2 2.00030e+01 8.81988e+00 150 2019 3 1.27005e+01 7.51675e+00 327 2019 4 6.32366e+00 1.96972e+00 215 2019 5 4.30082e+00 1.81238e+00 154 2019 6 1.55673e+01 4.55885e+00 13 2019 7 6.17204e+00 3.48722e+00 110 2019 8 5.97926e+00 2.95794e+00 59 2019 9 6.64423e+00 4.48638e+00 101 2019 10 4.54418e+00 2.71743e+00 301 2019 11 3.10043e+00 1.64181e+00 366 2019 12 3.89973e+00 2.45214e+00 164 2020 1 3.82692e+00 1.49713e+00 273 2020 2 4.32253e+00 2.02338e+00 322 2020 3 3.54621e+00 1.07586e+00 407 2020 4 3.75423e+00 1.59145e+00 195 2020 5 2.57091e+00 1.80611e+00 233 2020 6 7.39206e+00 5.88650e+00 156 2020 7 7.52127e+00 5.65844e+00 92 2020 8 9.18862e+00 7.54646e+00 52 2020 9 7.52921e+00 4.29822e+00 60 2020 10 1.61379e+01 1.05285e+01 144 2020 11 4.65934e+00 2.59755e+00 301 2020 12 4.74634e+00 2.31381e+00 305 2021 1 5.59656e+00 2.24857e+00 255 2021 2 9.48565e+00 8.26723e+00 336 2021 3 7.55515e+00 4.07469e+00 275 2021 4 7.76965e+00 2.78143e+00 198 2021 5 5.82885e+00 2.80667e+00 290 2021 6 5.04813e+00 2.07304e+00 65 2021 7 nan nan 0 2021 8 1.58264e+01 2.95208e+00 3 2021 9 1.84813e+01 1.09040e+01 62 2021 10 9.12850e+00 8.49193e+00 126 2021 11 6.06978e+00 3.26913e+00 419 2021 12 4.62481e+00 1.96159e+00 362 2022 1 6.06908e+00 4.57889e+00 428 2022 2 4.35101e+00 2.62555e+00 411 2022 3 9.04636e+00 9.53333e+00 421 2022 4 5.89301e+00 2.22245e+00 51 2022 5 7.44574e+00 3.57478e+00 174 2022 6 5.16442e+00 2.36425e+00 79 2022 7 4.64741e+00 2.64756e+00 59 2022 8 5.80455e+00 4.48153e+00 164 2022 9 5.70558e+00 3.75129e+00 173 2022 10 5.09192e+00 3.15084e+00 1005 2022 11 5.34918e+00 4.26962e+00 279 2022 12 3.43875e+00 2.62893e+00 599 2023 1 4.99909e+00 4.83075e+00 588 2023 2 4.32016e+00 1.76171e+00 400 2023 3 5.58661e+00 2.84482e+00 414 2023 4 4.21524e+00 2.21675e+00 329 2023 5 5.65173e+00 3.69576e+00 233 2023 6 4.62888e+00 3.44414e+00 115 2023 7 1.61024e+01 8.50921e+00 62 2023 8 9.13461e+00 5.49945e+00 159 2023 9 9.74324e+00 8.66250e+00 121 2023 10 5.23867e+00 3.12866e+00 431 2023 11 5.28644e+00 2.86357e+00 526 2023 12 7.10973e+00 3.86894e+00 183 2024 1 1.07393e+01 4.90825e+00 208 2024 2 1.00502e+01 3.48997e+00 540 2024 3 1.25008e+01 5.86040e+00 273 2024 4 nan nan 0