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 1.96784e+00 1.69176e+00 115 2002 8 1.27841e+00 5.62211e-01 207 2002 9 2.63232e+00 1.27873e+00 73 2002 10 1.33768e+00 6.43997e-01 404 2002 11 1.60954e+00 6.13515e-01 495 2002 12 1.91860e+00 1.11157e+00 441 2003 1 2.75843e+00 1.88698e+00 613 2003 2 1.45848e+00 7.31547e-01 371 2003 3 nan nan 0 2003 4 nan nan 0 2003 5 6.08548e+00 1.58744e+00 41 2003 6 nan nan 0 2003 7 nan nan 0 2003 8 nan nan 0 2003 9 6.23058e+00 1.91323e+00 80 2003 10 2.50733e+00 1.74221e+00 378 2003 11 2.24310e+00 1.89779e+00 336 2003 12 1.57737e+00 1.04922e+00 401 2004 1 1.47448e+00 7.15666e-01 636 2004 2 2.04828e+00 1.28073e+00 295 2004 3 4.29550e+00 1.79709e+00 84 2004 4 1.40930e+00 5.00424e-01 195 2004 5 1.86272e+00 9.11187e-01 202 2004 6 1.33224e+00 1.33250e+00 207 2004 7 3.00069e+00 1.86492e+00 100 2004 8 2.41564e+00 1.68702e+00 232 2004 9 5.23546e+00 1.26359e+00 17 2004 10 nan nan 0 2004 11 6.53481e+00 6.12839e-01 4 2004 12 4.13418e+00 1.91138e+00 148 2005 1 2.43415e+00 1.49495e+00 171 2005 2 2.58396e+00 1.30666e+00 127 2005 3 2.77983e+00 1.45345e+00 128 2005 4 8.31343e+00 5.63188e-01 6 2005 5 nan nan 0 2005 6 nan nan 0 2005 7 nan nan 0 2005 8 nan nan 0 2005 9 1.50503e+00 9.50948e-01 69 2005 10 1.36910e+00 1.03182e+00 490 2005 11 1.78891e+00 1.20888e+00 470 2005 12 2.09240e+00 1.40552e+00 401 2006 1 3.91777e+00 1.80083e+00 138 2006 2 6.07194e+00 1.90200e+00 44 2006 3 6.39611e+00 1.93330e+00 189 2006 4 1.82428e+00 5.78800e-01 208 2006 5 1.89380e+00 1.25302e+00 109 2006 6 1.29320e+00 7.72354e-01 98 2006 7 3.21267e+00 1.55465e+00 50 2006 8 1.66710e+00 3.81256e-01 201 2006 9 2.00951e+00 1.32225e+00 398 2006 10 1.44746e+00 9.75447e-01 480 2006 11 1.02979e+00 4.50535e-01 529 2006 12 7.40232e-01 8.64663e-01 355 2007 1 9.27633e-01 3.83034e-01 246 2007 2 1.21659e+00 7.38972e-01 443 2007 3 1.64169e+00 9.56913e-01 536 2007 4 1.44197e+00 4.62912e-01 253 2007 5 1.72599e+00 2.35503e-01 41 2007 6 8.89860e-01 2.06173e-01 64 2007 7 1.53343e+00 9.48718e-01 187 2007 8 1.67880e+00 1.30389e+00 146 2007 9 3.02152e+00 2.11012e+00 114 2007 10 1.28105e+00 1.08969e+00 338 2007 11 1.08599e+00 5.67223e-01 715 2007 12 1.30828e+00 6.02521e-01 515 2008 1 8.68877e-01 3.17068e-01 336 2008 2 1.97230e+00 7.91937e-01 481 2008 3 3.24791e+00 1.58558e+00 190 2008 4 6.45913e+00 2.46022e+00 29 2008 5 4.10936e+00 1.86379e+00 66 2008 6 2.18465e+00 1.52639e+00 153 2008 7 1.63449e+00 5.94999e-01 213 2008 8 2.58632e+00 7.61205e-01 63 2008 9 4.65227e+00 1.83386e+00 95 2008 10 2.98988e+00 1.91091e+00 428 2008 11 1.39231e+00 6.49432e-01 656 2008 12 2.70795e+00 1.03465e+00 422 2009 1 2.13621e+00 1.43845e+00 423 2009 2 1.54072e+00 7.23429e-01 639 2009 3 1.67520e+00 1.11058e+00 461 2009 4 4.55223e+00 2.11741e+00 75 2009 5 2.53579e+00 7.38477e-01 57 2009 6 1.42575e+00 3.45632e-01 51 2009 7 nan nan 0 2009 8 3.71557e+00 1.41011e+00 71 2009 9 3.44693e+00 1.64809e+00 289 2009 10 1.87664e+00 1.05515e+00 592 2009 11 1.05486e+00 3.63361e-01 502 2009 12 1.46198e+00 9.17279e-01 205 2010 1 2.07353e+00 1.78396e+00 591 2010 2 4.20811e+00 1.53628e+00 290 2010 3 4.43049e+00 2.03124e+00 262 2010 4 nan nan 0 2010 5 2.71378e+00 1.66252e+00 121 2010 6 2.82707e+00 1.35000e+00 177 2010 7 4.03547e+00 2.27843e+00 89 2010 8 2.89191e+00 1.61627e+00 44 2010 9 2.99971e+00 1.75504e+00 223 2010 10 1.61432e+00 6.21472e-01 1074 2010 11 1.52421e+00 9.98095e-01 865 2010 12 1.12629e+00 6.35697e-01 484 2011 1 1.07729e+00 6.61572e-01 412 2011 2 1.54699e+00 1.38391e+00 561 2011 3 2.17466e+00 1.07373e+00 588 2011 4 2.56702e+00 1.52517e+00 289 2011 5 1.45024e+00 1.16035e+00 309 2011 6 2.21768e+00 1.41069e+00 48 2011 7 1.60713e+00 6.69976e-01 163 2011 8 1.36555e+00 6.62327e-01 98 2011 9 1.02504e+00 2.69883e-01 424 2011 10 1.08903e+00 4.35435e-01 559 2011 11 9.47240e-01 4.57063e-01 798 2011 12 8.48651e-01 4.61255e-01 610 2012 1 1.11546e+00 8.47034e-01 707 2012 2 8.85003e-01 2.55302e-01 168 2012 3 2.84530e+00 1.99213e+00 326 2012 4 2.29793e+00 1.59766e+00 362 2012 5 1.39973e+00 5.84417e-01 230 2012 6 nan nan 0 2012 7 nan nan 0 2012 8 nan nan 0 2012 9 6.92981e+00 7.27998e-01 3 2012 10 3.39935e+00 1.83161e+00 61 2012 11 1.63910e+00 1.23645e+00 408 2012 12 1.46083e+00 5.90028e-01 331 2013 1 1.30660e+00 9.46712e-01 355 2013 2 1.19790e+00 3.49132e-01 264 2013 3 2.33938e+00 1.60903e+00 275 2013 4 5.27117e-03 7.64948e-04 3 2013 5 2.39049e+00 9.04259e-01 48 2013 6 6.12160e+00 9.17279e-01 5 2013 7 nan nan 0 2013 8 nan nan 0 2013 9 6.36583e-04 4.52201e-04 4 2013 10 2.49695e+00 1.48167e+00 436 2013 11 1.81021e+00 6.25828e-01 187 2013 12 1.83232e+00 1.18666e+00 309 2014 1 1.94482e+00 1.36749e+00 125 2014 2 3.17999e+00 1.24304e+00 195 2014 3 4.34356e+00 2.38882e+00 178 2014 4 nan nan 0 2014 5 nan nan 0 2014 6 3.23203e+00 6.04850e-01 32 2014 7 2.46337e+00 7.72148e-01 117 2014 8 5.24777e+00 2.61971e+00 10 2014 9 1.35023e+00 1.13097e+00 4 2014 10 2.76588e+00 1.46054e+00 475 2014 11 1.25344e+00 5.52929e-01 600 2014 12 1.74816e+00 1.82371e+00 407 2015 1 2.47184e+00 1.54050e+00 353 2015 2 2.17199e+00 1.12326e+00 215 2015 3 3.73215e+00 2.11998e+00 127 2015 4 5.88071e+00 1.55247e+00 52 2015 5 2.95542e+00 1.97881e+00 168 2015 6 3.26041e+00 1.62578e+00 131 2015 7 4.16003e+00 1.91440e-01 2 2015 8 nan nan 0 2015 9 4.84686e+00 2.55719e+00 17 2015 10 2.25686e+00 1.25301e+00 372 2015 11 2.36008e+00 1.85655e+00 285 2015 12 1.60205e+00 8.77977e-01 435 2016 1 1.87352e+00 7.58574e-01 314 2016 2 3.29968e+00 1.51122e+00 202 2016 3 3.37792e+00 1.71961e+00 104 2016 4 4.67486e+00 1.85565e+00 97 2016 5 4.63916e+00 2.09201e+00 97 2016 6 1.90778e+00 8.70756e-01 303 2016 7 2.58023e+00 1.74085e+00 233 2016 8 2.75296e+00 1.54227e+00 149 2016 9 5.41081e+00 1.85666e+00 115 2016 10 1.81235e+00 6.90987e-01 471 2016 11 1.35941e+00 5.32206e-01 649 2016 12 1.04103e+00 3.99693e-01 391 2017 1 1.67279e+00 1.28510e+00 390 2017 2 3.91587e+00 1.79795e+00 148 2017 3 2.89969e+00 1.43155e+00 569 2017 4 2.61653e+00 1.92724e+00 298 2017 5 2.00650e+00 6.85847e-01 109 2017 6 1.83564e+00 1.20670e+00 226 2017 7 nan nan 0 2017 8 7.20902e+00 1.16925e+00 20 2017 9 5.27331e+00 2.83811e+00 8 2017 10 nan nan 0 2017 11 2.53530e+00 1.42843e+00 699 2017 12 1.91606e+00 1.34236e+00 438 2018 1 1.44145e+00 7.19021e-01 420 2018 2 3.11276e+00 2.38247e+00 315 2018 3 2.78421e+00 1.49482e+00 472 2018 4 3.06622e+00 2.14261e+00 276 2018 5 2.95121e+00 1.94165e+00 219 2018 6 nan nan 0 2018 7 nan nan 0 2018 8 3.65665e+00 1.96724e+00 9 2018 9 4.91057e+00 1.77993e+00 43 2018 10 3.83459e+00 2.02152e+00 414 2018 11 1.98650e+00 6.31122e-01 216 2018 12 2.64937e+00 1.26846e+00 186 2019 1 nan nan 0 2019 2 nan nan 0 2019 3 5.15573e+00 1.62412e+00 51 2019 4 3.70251e+00 1.71005e+00 113 2019 5 2.44928e+00 1.74938e+00 223 2019 6 1.01249e+00 1.84058e-01 73 2019 7 6.70344e-01 2.40004e-01 26 2019 8 6.22992e+00 2.52868e+00 13 2019 9 1.58898e+00 5.07756e-01 173 2019 10 1.85584e+00 7.85727e-01 314 2019 11 1.47963e+00 1.03438e+00 570 2019 12 1.59925e+00 8.61202e-01 136 2020 1 1.96793e+00 1.41513e+00 336 2020 2 1.95664e+00 7.15841e-01 241 2020 3 2.91647e+00 2.54749e+00 78 2020 4 3.91922e+00 1.36283e+00 9 2020 5 6.76623e+00 3.18486e-01 4 2020 6 5.88340e+00 0.00000e+00 2 2020 7 7.61858e+00 1.43265e+00 2 2020 8 nan nan 0 2020 9 3.83395e+00 2.58459e+00 7 2020 10 4.57947e+00 1.99541e+00 86 2020 11 3.22637e+00 1.86382e+00 400 2020 12 1.62494e+00 7.59298e-01 355 2021 1 2.77814e+00 2.03324e+00 179 2021 2 6.04117e+00 2.51200e+00 101 2021 3 7.77122e+00 0.00000e+00 1 2021 4 nan nan 0 2021 5 5.88649e+00 2.08415e+00 41 2021 6 2.10565e+00 1.51760e+00 127 2021 7 nan nan 0 2021 8 nan nan 0 2021 9 1.49690e+00 3.95981e-01 64 2021 10 4.78675e+00 2.09710e+00 88 2021 11 2.15152e+00 1.66788e+00 371 2021 12 2.68750e+00 1.95495e+00 405 2022 1 2.61334e+00 7.78461e-01 370 2022 2 3.14940e+00 1.87038e+00 589 2022 3 3.04045e+00 1.81094e+00 420 2022 4 1.32003e+00 9.87201e-01 2 2022 5 5.43488e+00 1.54231e+00 88 2022 6 3.15856e+00 1.97955e+00 117 2022 7 3.13590e+00 2.17480e+00 153 2022 8 5.46949e+00 1.48380e+00 63 2022 9 3.74688e+00 1.24341e+00 18 2022 10 2.05069e+00 1.62299e+00 826 2022 11 2.46516e+00 1.24098e+00 277 2022 12 1.80472e+00 1.46634e+00 558 2023 1 1.01517e+00 3.47667e-01 655 2023 2 2.29575e+00 2.00977e+00 421 2023 3 3.48347e+00 1.77515e+00 196 2023 4 2.93772e+00 2.48101e+00 295 2023 5 2.36436e+00 1.53716e+00 179 2023 6 2.85767e+00 1.76271e+00 161 2023 7 6.35330e+00 1.68130e+00 54 2023 8 3.60278e+00 2.55930e+00 56 2023 9 4.81270e+00 2.20663e+00 42 2023 10 2.77809e+00 2.07931e+00 456 2023 11 1.97965e+00 1.15713e+00 543 2023 12 3.33626e+00 2.00850e+00 222 2024 1 6.39273e+00 7.89600e-01 8 2024 2 3.00275e+00 1.15021e+00 118 2024 3 3.66045e+00 1.61713e+00 166 2024 4 nan nan 0