YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.36839e+00 1.10599e-01 28 2000 3 2.81012e+00 8.48247e-01 126 2000 4 3.92764e+00 2.26916e-01 91 2000 5 6.69727e+00 1.08082e+00 44 2000 6 1.16377e+01 4.70318e-01 59 2000 7 1.78619e+01 8.56114e-01 387 2000 8 2.03937e+01 6.91805e-01 459 2000 9 1.86491e+01 3.05656e+00 289 2000 10 1.13705e+01 6.68470e-01 85 2000 11 9.64863e+00 2.09217e+00 171 2000 12 4.39324e+00 2.17744e+00 34 2001 1 4.07556e-01 3.47795e-01 135 2001 2 4.13293e-01 3.17466e-01 82 2001 3 1.11751e+00 7.40055e-01 271 2001 4 2.71882e+00 1.23708e+00 68 2001 5 7.13196e+00 1.11950e+00 51 2001 6 1.14298e+01 1.30088e+00 21 2001 7 1.80217e+01 1.41546e+00 447 2001 8 2.08724e+01 1.37297e+00 864 2001 9 1.64671e+01 1.64583e+00 246 2001 10 1.19446e+01 4.49800e+00 191 2001 11 6.20958e+00 3.01549e-01 201 2001 12 5.55037e+00 9.17017e-01 244 2002 1 2.15628e+00 4.37376e-01 113 2002 2 1.91502e+00 4.53069e-01 254 2002 3 1.62193e+00 3.37205e-01 75 2002 4 3.38078e+00 1.53325e+00 172 2002 5 6.24875e+00 3.71280e-01 152 2002 6 1.25651e+01 6.09118e-01 51 2002 7 1.98613e+01 1.16325e+00 1046 2002 8 1.93412e+01 8.67779e-01 983 2002 9 1.86016e+01 1.65956e+00 511 2002 10 1.10311e+01 1.47618e+00 597 2002 11 7.09478e+00 1.26975e+00 425 2002 12 3.50140e+00 1.29419e+00 215 2003 1 1.85241e+00 7.29139e-01 108 2003 2 3.80290e-01 3.25904e-01 207 2003 3 1.78265e+00 8.75106e-01 230 2003 4 1.06759e+00 3.95916e-01 116 2003 5 5.02976e+00 9.29502e-01 63 2003 6 1.32152e+01 1.44895e+00 24 2003 7 1.60402e+01 1.54529e+00 811 2003 8 2.02164e+01 1.75488e+00 1586 2003 9 1.96213e+01 9.77640e-01 465 2003 10 7.69178e+00 7.55683e-01 163 2003 11 6.28195e+00 7.14783e-01 486 2003 12 3.37603e+00 1.09856e+00 320 2004 1 1.95688e+00 7.08343e-01 40 2004 2 6.84395e-01 4.72867e-01 397 2004 3 2.00757e+00 4.20277e-01 222 2004 4 3.76356e+00 1.22682e+00 301 2004 5 7.23203e+00 1.19216e+00 111 2004 6 1.13664e+01 1.66571e+00 113 2004 7 1.82277e+01 1.97091e+00 1410 2004 8 1.76614e+01 1.31092e+00 957 2004 9 1.58432e+01 1.28546e+00 469 2004 10 1.19580e+01 1.04480e+00 365 2004 11 8.34790e+00 1.51453e+00 402 2004 12 4.14294e+00 1.13688e+00 97 2005 1 1.28855e+00 8.00464e-01 169 2005 2 4.31136e-01 3.33465e-01 44 2005 3 7.22548e-01 3.06228e-01 365 2005 4 4.74051e+00 9.41000e-01 127 2005 5 8.22401e+00 2.59002e+00 528 2005 6 1.24001e+01 1.93991e+00 68 2005 7 2.00920e+01 2.04284e+00 1276 2005 8 2.05099e+01 7.84015e-01 1018 2005 9 1.94206e+01 2.14901e+00 848 2005 10 1.25711e+01 6.76748e-01 620 2005 11 7.53154e+00 2.33193e+00 416 2005 12 2.23949e+00 7.92890e-01 147 2006 1 1.65656e+00 5.14031e-01 215 2006 2 1.01309e+00 3.60301e-01 225 2006 3 1.92578e+00 4.65335e-01 637 2006 4 4.93996e+00 1.53036e+00 242 2006 5 7.44721e+00 6.02737e-01 337 2006 6 1.38840e+01 1.19251e+00 965 2006 7 1.77754e+01 1.52653e+00 624 2006 8 2.10718e+01 7.34850e-01 1583 2006 9 2.02023e+01 1.49937e+00 802 2006 10 8.26180e+00 2.53805e+00 509 2006 11 5.61882e+00 7.91058e-01 322 2006 12 3.52416e+00 6.64384e-01 249 2007 1 2.83894e+00 9.47466e-01 202 2007 2 nan nan 0 2007 3 1.09584e+00 4.80684e-01 273 2007 4 2.07583e+00 1.00382e+00 258 2007 5 6.38386e+00 4.23337e-01 88 2007 6 1.44899e+01 2.91010e+00 390 2007 7 1.80766e+01 1.73549e+00 991 2007 8 2.06707e+01 8.03616e-01 1245 2007 9 1.81790e+01 3.31265e+00 423 2007 10 1.28088e+01 1.26389e+00 486 2007 11 6.59359e+00 1.81544e+00 490 2007 12 2.77864e+00 1.03422e+00 140 2008 1 1.15476e+00 7.48164e-01 21 2008 2 3.73298e-01 1.32574e-01 94 2008 3 1.23431e+00 5.70177e-01 450 2008 4 3.74326e+00 1.45275e+00 164 2008 5 6.96252e+00 1.03395e+00 244 2008 6 1.20987e+01 1.48907e+00 509 2008 7 1.72609e+01 2.32043e+00 732 2008 8 2.08040e+01 6.96982e-01 2282 2008 9 1.80452e+01 1.40913e+00 939 2008 10 1.52583e+01 1.54381e+00 384 2008 11 4.62022e+00 1.75923e+00 368 2008 12 1.65469e+00 5.70394e-01 112 2009 1 8.23393e-01 3.11761e-01 28 2009 2 5.29110e-01 3.89006e-01 73 2009 3 1.50113e+00 6.97732e-01 337 2009 4 3.02025e+00 1.30890e+00 413 2009 5 6.85997e+00 1.34106e+00 150 2009 6 1.72552e+01 3.01804e+00 148 2009 7 1.54306e+01 1.03964e+00 826 2009 8 1.59911e+01 1.37785e+00 416 2009 9 1.90993e+01 1.27907e+00 1870 2009 10 1.20100e+01 1.60630e+00 547 2009 11 7.46754e+00 1.16048e+00 516 2009 12 4.46488e+00 1.41428e+00 202 2010 1 1.33580e+00 3.93850e-01 119 2010 2 -4.39687e-01 2.10665e-01 16 2010 3 1.99995e+00 1.38012e+00 189 2010 4 5.95476e+00 8.62893e-01 390 2010 5 7.93628e+00 2.65548e+00 246 2010 6 1.54747e+01 1.93405e+00 954 2010 7 1.92232e+01 1.72221e+00 805 2010 8 2.04880e+01 1.38710e+00 1343 2010 9 1.31891e+01 1.78700e+00 427 2010 10 1.40249e+01 1.51715e+00 1311 2010 11 6.63138e+00 9.63533e-01 407 2010 12 2.63715e+00 1.18677e+00 186 2011 1 1.82147e+00 1.51646e-01 17 2011 2 1.26600e+00 5.39674e-01 201 2011 3 1.16697e+00 3.97498e-01 558 2011 4 2.33756e+00 1.24872e+00 176 2011 5 5.29939e+00 7.82860e-01 41 2011 6 1.44354e+01 3.29207e+00 257 2011 7 1.87043e+01 1.22321e+00 558 2011 8 2.11412e+01 8.19284e-01 1727 2011 9 1.78949e+01 1.26229e+00 1250 2011 10 1.16681e+01 1.91779e+00 795 2011 11 8.24427e+00 1.32982e+00 568 2011 12 4.03427e+00 7.15719e-01 219 2012 1 1.91490e+00 9.06133e-01 99 2012 2 1.63879e+00 5.49897e-01 614 2012 3 1.19420e+00 1.65701e+00 81 2012 4 5.77317e+00 1.02834e+00 467 2012 5 9.01843e+00 1.00796e+00 182 2012 6 1.36827e+01 1.13716e+00 594 2012 7 2.15717e+01 1.36580e+00 1664 2012 8 2.11517e+01 1.09108e+00 1580 2012 9 1.74460e+01 3.31795e+00 719 2012 10 1.01338e+01 2.90174e+00 562 2012 11 7.24427e+00 2.38055e+00 343 2012 12 4.90239e+00 7.21790e-01 205 2013 1 2.46412e+00 4.24618e-01 255 2013 2 2.41690e-01 3.68378e-01 71 2013 3 1.30025e+00 5.19284e-01 325 2013 4 2.56712e+00 6.96281e-01 544 2013 5 7.68868e+00 1.58496e+00 148 2013 6 1.20244e+01 1.60394e+00 152 2013 7 1.90505e+01 2.75932e+00 1086 2013 8 1.78206e+01 8.93248e-01 1321 2013 9 1.82626e+01 9.24269e-01 849 2013 10 1.02073e+01 2.94498e+00 374 2013 11 5.31335e+00 1.59502e+00 523 2013 12 2.37986e+00 8.67884e-01 73 2014 1 1.55750e+00 2.00937e-01 74 2014 2 2.80392e-01 1.85873e-01 51 2014 3 8.57647e-01 9.13319e-02 17 2014 4 1.29443e+00 6.03579e-01 238 2014 5 1.17421e+01 4.00365e-01 28 2014 6 1.15840e+01 8.28446e-01 26 2014 7 1.34257e+01 9.57499e-01 194 2014 8 1.80335e+01 1.90281e+00 975 2014 9 1.33745e+01 2.90086e+00 219 2014 10 1.04450e+01 8.39207e-01 340 2014 11 6.80451e+00 1.43742e+00 253 2014 12 2.35901e+00 6.66937e-01 176 2015 1 7.47619e-01 6.01490e-01 84 2015 2 1.25000e-01 1.41421e-02 3 2015 3 1.69432e+00 4.77902e-01 436 2015 4 3.80596e+00 1.06566e+00 141 2015 5 6.79486e+00 1.21738e+00 70 2015 6 1.28594e+01 1.87671e+00 378 2015 7 1.68017e+01 2.16805e+00 610 2015 8 1.98858e+01 1.21735e+00 407 2015 9 1.64260e+01 2.06479e+00 432 2015 10 1.46303e+01 2.03597e+00 593 2015 11 5.11425e+00 7.82273e-01 443 2015 12 4.06102e+00 3.86504e-01 157 2016 1 1.72212e+00 8.60777e-01 179 2016 2 1.32458e+00 3.95026e-01 118 2016 3 2.18022e+00 1.02119e+00 208 2016 4 3.24365e+00 7.56035e-01 371 2016 5 7.16860e+00 1.20667e+00 375 2016 6 1.51958e+01 2.70412e+00 581 2016 7 1.86117e+01 1.01878e+00 740 2016 8 2.21642e+01 1.20024e+00 1606 2016 9 1.88539e+01 2.02787e+00 634 2016 10 1.57239e+01 2.08716e+00 563 2016 11 9.00637e+00 2.13392e+00 772 2016 12 3.13811e+00 7.70497e-01 148 2017 1 1.03782e+00 8.54175e-01 131 2017 2 1.16601e+00 5.04438e-01 228 2017 3 1.26365e+00 5.97067e-01 299 2017 4 4.55986e+00 1.34167e+00 107 2017 5 7.68150e+00 1.35682e+00 508 2017 6 1.07885e+01 1.45511e+00 245 2017 7 1.95547e+01 1.92090e+00 1621 2017 8 2.01344e+01 9.87868e-01 1432 2017 9 1.85255e+01 8.65991e-01 1352 2017 10 1.46566e+01 2.01118e+00 273 2017 11 4.91034e+00 6.99992e-01 458 2017 12 3.79341e+00 1.18370e+00 343 2018 1 1.00029e+00 3.00769e-01 87 2018 2 9.64178e-01 2.54871e-01 152 2018 3 1.37254e+00 7.29052e-01 431 2018 4 2.01693e+00 6.73198e-01 425 2018 5 5.38333e+00 3.13484e-01 3 2018 6 1.38276e+01 1.90375e+00 164 2018 7 1.90843e+01 1.14314e+00 1147 2018 8 2.22534e+01 1.04607e+00 1433 2018 9 1.76655e+01 1.36069e+00 829 2018 10 1.01600e+01 1.67563e+00 464 2018 11 5.47222e+00 1.65965e+00 264 2018 12 2.08395e+00 6.86316e-01 257 2019 1 1.94158e+00 8.17849e-01 136 2019 2 2.89097e-01 1.78394e-01 144 2019 3 1.45596e+00 6.06939e-01 408 2019 4 2.86080e+00 6.17841e-01 44 2019 5 7.53632e+00 3.83630e+00 38 2019 6 1.20318e+01 2.17148e+00 184 2019 7 1.76895e+01 1.32360e+00 740 2019 8 1.92885e+01 1.25867e+00 1651 2019 9 1.49039e+01 1.19938e+00 395 2019 10 1.01158e+01 3.54983e+00 945 2019 11 5.76437e+00 7.18369e-01 510 2019 12 2.84905e+00 8.99617e-01 352 2020 1 2.14411e+00 5.45858e-01 450 2020 2 1.29358e+00 5.23700e-01 796 2020 3 1.80608e+00 4.88850e-01 606 2020 4 4.10438e+00 5.57642e-01 642 2020 5 9.14191e+00 3.26340e+00 586 2020 6 1.40474e+01 2.89577e+00 1188 2020 7 2.10434e+01 1.41813e+00 1701 2020 8 2.06103e+01 1.44209e+00 779 2020 9 1.52672e+01 1.33375e+00 1139 2020 10 1.02588e+01 1.17880e+00 954 2020 11 7.17945e+00 1.72582e+00 1459 2020 12 4.57071e+00 8.07670e-01 567 2021 1 2.00883e+00 4.08461e-01 334 2021 2 1.10914e+00 6.22013e-01 419 2021 3 2.44399e+00 8.50681e-01 1746 2021 4 4.98746e+00 1.06192e+00 787 2021 5 9.35352e+00 1.68586e+00 662 2021 6 1.49324e+01 2.17351e+00 1013 2021 7 1.95140e+01 2.33900e+00 2056 2021 8 2.05834e+01 1.18642e+00 1711 2021 9 1.88463e+01 1.96790e+00 1577 2021 10 1.63282e+01 1.12263e+00 792 2021 11 9.16324e+00 4.03570e+00 1041 2021 12 3.71874e+00 7.77180e-01 396 2022 1 1.54621e+00 7.82041e-01 58 2022 2 4.34444e-01 4.01100e-01 153 2022 3 1.22084e+00 7.18681e-01 683 2022 4 3.34285e+00 8.30392e-01 191 2022 5 8.30474e+00 2.75467e+00 209 2022 6 1.12738e+01 2.17361e+00 611 2022 7 1.70574e+01 2.25905e+00 1068 2022 8 1.96325e+01 2.04446e+00 1770 2022 9 1.88979e+01 1.26855e+00 1646 2022 10 1.48808e+01 2.39761e+00 971 2022 11 6.75813e+00 2.35857e+00 831 2022 12 3.89344e+00 5.73991e-01 285 2023 1 1.58935e+00 5.24887e-01 348 2023 2 1.10818e+00 4.23862e-01 1129 2023 3 1.73578e+00 5.72149e-01 1041 2023 4 4.03501e+00 1.19705e+00 675 2023 5 1.01242e+01 2.35671e+00 576 2023 6 1.65405e+01 1.55169e+00 1020 2023 7 1.90026e+01 1.17259e+00 1702 2023 8 2.00292e+01 1.46823e+00 1648 2023 9 1.84106e+01 5.75687e-01 988 2023 10 1.60732e+01 2.69856e+00 886 2023 11 7.33036e+00 1.76143e+00 1275 2023 12 3.77676e+00 6.25794e-01 561 2024 1 1.32487e+00 2.88930e-01 77 2024 2 1.97351e+00 5.60524e-01 880 2024 3 3.01916e+00 4.32160e-01 1002 2024 4 2.62436e+00 2.64258e-01 39