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 7.97712e-01 2.02304e-01 96 2002 8 1.50607e+00 1.19740e+00 142 2002 9 1.34344e+00 4.85127e-01 114 2002 10 1.13286e+00 5.81766e-01 421 2002 11 1.65391e+00 6.55391e-01 427 2002 12 1.71721e+00 1.03591e+00 332 2003 1 1.68721e+00 1.21952e+00 482 2003 2 9.60168e-01 3.07502e-01 388 2003 3 nan nan 0 2003 4 6.51878e+00 1.76713e+00 20 2003 5 3.68729e+00 1.82708e+00 40 2003 6 6.99089e+00 1.12036e+00 2 2003 7 2.82188e+00 8.22410e-01 5 2003 8 6.55804e+00 1.45525e+00 23 2003 9 2.81738e+00 1.56570e+00 167 2003 10 2.01560e+00 1.42136e+00 272 2003 11 1.44067e+00 3.40718e-01 406 2003 12 1.02906e+00 5.16117e-01 345 2004 1 9.60810e-01 2.14625e-01 424 2004 2 8.98555e-01 2.51594e-01 232 2004 3 2.42268e+00 1.50620e+00 458 2004 4 1.22855e+00 5.75678e-01 242 2004 5 1.20416e+00 3.16842e-01 144 2004 6 1.20654e+00 5.72442e-01 184 2004 7 9.48870e-01 6.47270e-01 135 2004 8 1.17782e+00 2.06761e-01 107 2004 9 1.53421e+00 3.15678e-01 63 2004 10 1.75489e+00 1.63310e-01 8 2004 11 7.26776e+00 1.00756e+00 9 2004 12 2.30004e+00 1.08787e+00 149 2005 1 2.28804e+00 1.41414e+00 220 2005 2 2.80331e+00 1.58317e+00 231 2005 3 1.56040e+00 9.22404e-01 201 2005 4 4.85445e+00 2.11896e+00 108 2005 5 1.65674e+00 8.06039e-01 26 2005 6 6.73213e+00 1.26708e+00 7 2005 7 5.45634e+00 1.84973e+00 14 2005 8 3.05463e+00 1.04185e+00 57 2005 9 2.04679e+00 5.90782e-01 101 2005 10 1.18354e+00 3.57600e-01 265 2005 11 9.92631e-01 2.39801e-01 347 2005 12 1.31909e+00 6.33476e-01 272 2006 1 2.28074e+00 1.11983e+00 253 2006 2 1.78761e+00 8.22463e-01 134 2006 3 3.63148e+00 1.98963e+00 350 2006 4 1.34588e+00 3.63853e-01 188 2006 5 1.34435e+00 8.62832e-01 183 2006 6 1.32465e+00 1.28483e+00 115 2006 7 2.81935e+00 1.59168e+00 14 2006 8 1.52470e+00 8.51734e-01 111 2006 9 1.66558e+00 9.03963e-01 358 2006 10 1.58999e+00 9.48276e-01 313 2006 11 1.03751e+00 3.76218e-01 380 2006 12 1.10686e+00 6.88635e-01 292 2007 1 1.30119e+00 7.62190e-01 228 2007 2 7.34339e-01 3.78862e-01 426 2007 3 9.36504e-01 4.67821e-01 541 2007 4 1.12419e+00 5.78707e-01 325 2007 5 7.19946e-01 1.07855e-01 51 2007 6 1.11925e+00 9.95068e-01 109 2007 7 2.47615e+00 2.45361e+00 138 2007 8 1.47351e+00 5.44574e-01 145 2007 9 2.34017e+00 2.07626e+00 103 2007 10 1.31200e+00 7.51997e-01 311 2007 11 1.16205e+00 8.74038e-01 488 2007 12 7.91269e-01 2.78347e-01 249 2008 1 8.50045e-01 5.49572e-01 302 2008 2 1.05315e+00 3.73838e-01 435 2008 3 2.33291e+00 2.12827e+00 261 2008 4 4.39881e+00 2.20768e+00 84 2008 5 1.78849e+00 4.62504e-01 142 2008 6 1.61596e+00 8.38240e-01 107 2008 7 2.35273e+00 1.57724e+00 48 2008 8 2.18046e+00 1.65113e+00 42 2008 9 2.74104e+00 1.50782e+00 121 2008 10 2.61565e+00 1.44828e+00 373 2008 11 1.50341e+00 8.47264e-01 473 2008 12 1.52635e+00 8.86480e-01 418 2009 1 1.30902e+00 6.50198e-01 304 2009 2 1.17165e+00 5.59503e-01 496 2009 3 8.28745e-01 2.46685e-01 401 2009 4 2.32062e+00 1.55611e+00 187 2009 5 2.61076e+00 1.00844e+00 41 2009 6 1.57293e+00 6.57266e-01 38 2009 7 8.32711e-01 1.99979e-01 52 2009 8 3.22035e+00 1.57997e+00 154 2009 9 2.02851e+00 1.19874e+00 307 2009 10 1.30247e+00 3.91085e-01 489 2009 11 1.20640e+00 4.34445e-01 296 2009 12 1.30483e+00 3.80078e-01 158 2010 1 1.18110e+00 5.57859e-01 554 2010 2 2.56397e+00 1.33441e+00 250 2010 3 4.36990e+00 2.09529e+00 249 2010 4 5.33760e+00 2.06790e+00 148 2010 5 2.79149e+00 1.80161e+00 253 2010 6 2.40404e+00 1.39656e+00 202 2010 7 2.46902e+00 8.06351e-01 93 2010 8 2.45758e+00 1.08395e+00 34 2010 9 3.19023e+00 1.76727e+00 208 2010 10 1.71739e+00 1.20976e+00 781 2010 11 1.28688e+00 6.65338e-01 731 2010 12 9.26989e-01 3.48831e-01 402 2011 1 8.89896e-01 5.66170e-01 408 2011 2 7.80049e-01 2.69668e-01 422 2011 3 1.51763e+00 6.95891e-01 458 2011 4 1.38118e+00 6.45528e-01 313 2011 5 1.06154e+00 5.38543e-01 237 2011 6 1.53531e+00 1.54200e+00 45 2011 7 1.85809e+00 9.89103e-01 97 2011 8 1.19223e+00 7.66945e-01 152 2011 9 1.51987e+00 1.04537e+00 454 2011 10 1.40841e+00 8.33123e-01 407 2011 11 9.28561e-01 3.15297e-01 537 2011 12 9.16505e-01 6.54299e-01 548 2012 1 8.63419e-01 4.02720e-01 487 2012 2 1.16338e+00 1.46349e-01 46 2012 3 8.58143e-01 3.92856e-01 428 2012 4 1.47631e+00 1.10526e+00 274 2012 5 8.83244e-01 4.43138e-01 186 2012 6 4.04931e+00 1.02413e+00 3 2012 7 4.47884e+00 2.12339e+00 30 2012 8 2.63348e-01 2.78194e-01 9 2012 9 4.01080e+00 1.54428e+00 70 2012 10 4.69709e+00 1.66520e+00 74 2012 11 1.26344e+00 3.75833e-01 384 2012 12 1.13292e+00 4.15570e-01 203 2013 1 1.29931e+00 6.94070e-01 384 2013 2 1.19758e+00 4.87893e-01 173 2013 3 1.23293e+00 5.74016e-01 316 2013 4 4.89478e+00 2.21411e+00 109 2013 5 1.71237e+00 2.73758e-01 93 2013 6 3.71600e+00 2.30255e+00 64 2013 7 6.93717e+00 2.30349e+00 7 2013 8 nan nan 0 2013 9 4.27498e+00 2.05881e+00 120 2013 10 2.27440e+00 1.20913e+00 342 2013 11 1.87471e+00 7.50164e-01 162 2013 12 1.32619e+00 4.26877e-01 337 2014 1 1.58030e+00 4.56482e-01 184 2014 2 1.42891e+00 4.58193e-01 376 2014 3 1.70754e+00 6.77393e-01 331 2014 4 3.21286e+00 1.83918e+00 107 2014 5 2.57306e+00 3.78462e-01 60 2014 6 2.54986e+00 1.17394e+00 16 2014 7 2.30052e+00 8.12559e-01 193 2014 8 1.78500e+00 8.88797e-01 107 2014 9 1.65198e+00 4.83155e-02 2 2014 10 1.38087e+00 6.43908e-01 624 2014 11 1.17037e+00 3.44617e-01 399 2014 12 1.09969e+00 4.45590e-01 200 2015 1 1.09447e+00 3.58536e-01 397 2015 2 1.06480e+00 2.14772e-01 373 2015 3 2.42199e+00 9.95004e-01 328 2015 4 3.87470e+00 1.59538e+00 43 2015 5 1.77894e+00 5.16107e-01 173 2015 6 1.48344e+00 6.04916e-01 109 2015 7 1.26271e+00 1.54367e-01 24 2015 8 6.54889e+00 2.66423e+00 4 2015 9 2.34672e+00 1.70339e+00 48 2015 10 1.45339e+00 4.75577e-01 371 2015 11 2.06099e+00 1.07865e+00 241 2015 12 1.58318e+00 8.82276e-01 322 2016 1 1.28462e+00 4.90333e-01 216 2016 2 1.56002e+00 1.01681e+00 394 2016 3 2.36592e+00 1.69424e+00 298 2016 4 3.22428e+00 1.76125e+00 148 2016 5 2.27139e+00 9.32263e-01 272 2016 6 1.32168e+00 6.09202e-01 301 2016 7 2.00355e+00 1.26125e+00 218 2016 8 2.51059e+00 1.25431e+00 176 2016 9 2.39201e+00 1.56752e+00 252 2016 10 1.53315e+00 6.70723e-01 337 2016 11 1.10962e+00 3.06928e-01 434 2016 12 9.10551e-01 3.95624e-01 206 2017 1 1.10765e+00 6.24772e-01 307 2017 2 1.38791e+00 5.38087e-01 567 2017 3 1.62509e+00 7.99625e-01 427 2017 4 1.39237e+00 5.60302e-01 340 2017 5 9.92805e-01 2.55290e-01 83 2017 6 1.39566e+00 2.48918e-01 118 2017 7 1.26124e+00 7.52398e-02 38 2017 8 2.85132e+00 2.19280e+00 197 2017 9 1.45180e+00 5.87723e-01 250 2017 10 2.86296e+00 1.90308e+00 62 2017 11 1.84005e+00 1.17282e+00 650 2017 12 9.29642e-01 3.28432e-01 341 2018 1 1.26592e+00 5.88698e-01 293 2018 2 2.35092e+00 1.62514e+00 490 2018 3 1.82326e+00 1.10703e+00 396 2018 4 1.35619e+00 3.46771e-01 188 2018 5 1.05067e+00 1.73610e-01 118 2018 6 1.44340e+00 6.11480e-01 132 2018 7 2.56275e+00 1.73495e+00 34 2018 8 nan nan 0 2018 9 3.54645e+00 1.70548e+00 331 2018 10 1.94638e+00 9.05708e-01 322 2018 11 1.49850e+00 7.75379e-01 125 2018 12 2.10461e+00 9.26779e-01 212 2019 1 3.20511e+00 1.37752e+00 117 2019 2 nan nan 0 2019 3 3.26889e+00 8.42214e-01 228 2019 4 2.75770e+00 7.60262e-01 137 2019 5 2.90391e+00 1.67090e+00 149 2019 6 8.66539e-01 8.50685e-02 42 2019 7 2.56862e+00 3.01613e-02 6 2019 8 2.13452e+00 1.26318e+00 84 2019 9 2.02661e+00 1.06910e+00 169 2019 10 1.99473e+00 8.33337e-01 284 2019 11 1.18387e+00 4.99496e-01 328 2019 12 1.75154e+00 7.45766e-01 116 2020 1 1.43308e+00 7.31330e-01 264 2020 2 2.02955e+00 6.18272e-01 61 2020 3 2.43997e+00 9.22957e-01 310 2020 4 2.28226e+00 8.72325e-01 127 2020 5 2.65434e+00 1.08278e+00 240 2020 6 2.04588e+00 8.44710e-01 232 2020 7 3.21263e+00 2.23303e+00 86 2020 8 2.51596e+00 3.33491e-01 49 2020 9 2.52363e+00 5.77017e-01 114 2020 10 2.32453e+00 8.52757e-01 260 2020 11 1.82762e+00 4.53754e-01 251 2020 12 1.23578e+00 6.05464e-01 219 2021 1 1.21359e+00 1.82108e-01 79 2021 2 2.33966e+00 6.27180e-01 231 2021 3 2.69304e+00 9.57752e-01 282 2021 4 3.70312e+00 1.59525e+00 226 2021 5 3.03764e+00 1.45402e+00 208 2021 6 2.31156e+00 7.47292e-01 56 2021 7 4.27228e+00 1.95762e+00 5 2021 8 3.01468e+00 5.61128e-01 28 2021 9 3.15540e+00 1.26448e+00 60 2021 10 2.56703e+00 1.35058e+00 200 2021 11 1.27986e+00 3.45091e-01 437 2021 12 1.56314e+00 8.33319e-01 357 2022 1 1.89574e+00 6.94847e-01 167 2022 2 1.73267e+00 8.56190e-01 447 2022 3 1.90377e+00 1.07046e+00 358 2022 4 nan nan 0 2022 5 2.86785e+00 1.41117e+00 167 2022 6 2.36095e+00 1.55561e+00 133 2022 7 2.14997e+00 1.53919e+00 158 2022 8 1.52901e+00 3.68442e-01 139 2022 9 1.40562e+00 4.83564e-01 144 2022 10 8.68805e-01 3.13680e-01 838 2022 11 1.24523e+00 5.28227e-01 293 2022 12 1.65995e+00 1.28971e+00 526 2023 1 1.30134e+00 9.25539e-01 529 2023 2 1.50640e+00 6.91015e-01 376 2023 3 2.18330e+00 1.44593e+00 332 2023 4 1.46943e+00 7.14034e-01 387 2023 5 9.98130e-01 1.95990e-01 166 2023 6 1.03258e+00 1.71546e-01 115 2023 7 1.64062e+00 9.51956e-01 172 2023 8 1.85738e+00 7.71861e-01 220 2023 9 2.21844e+00 1.44120e+00 253 2023 10 1.85756e+00 1.23727e+00 307 2023 11 1.24885e+00 5.96811e-01 438 2023 12 1.49718e+00 1.24283e+00 87 2024 1 2.31072e+00 1.17308e+00 120 2024 2 2.65478e+00 1.29676e+00 463 2024 3 2.75015e+00 9.69788e-01 205 2024 4 nan nan 0