YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.28500e+00 1.80638e-01 10 2000 3 5.10585e+00 1.96408e+00 218 2000 4 8.63450e+00 2.60444e+00 329 2000 5 1.47951e+01 1.83990e+00 405 2000 6 2.08806e+01 1.99712e+00 457 2000 7 2.35215e+01 6.37111e-01 980 2000 8 2.33264e+01 6.91680e-01 593 2000 9 2.06470e+01 3.03681e+00 1006 2000 10 1.38953e+01 1.12353e+00 480 2000 11 1.20025e+01 2.44335e+00 237 2000 12 2.25600e+00 6.30930e-01 135 2001 1 5.77683e-01 1.51943e-01 41 2001 2 3.15660e-01 4.64449e-01 53 2001 3 2.67059e+00 1.22638e+00 320 2001 4 7.48374e+00 2.45631e+00 211 2001 5 1.70009e+01 1.28080e+00 467 2001 6 1.85974e+01 2.31581e+00 372 2001 7 2.42438e+01 1.09076e+00 1328 2001 8 2.50542e+01 1.84891e+00 1518 2001 9 2.06038e+01 2.61623e+00 1660 2001 10 1.36114e+01 2.17143e+00 418 2001 11 9.44909e+00 7.63223e-01 589 2001 12 5.78267e+00 1.71166e+00 360 2002 1 5.39221e-01 3.05604e-01 199 2002 2 1.50657e+00 5.16352e-01 447 2002 3 9.28584e-01 1.15143e+00 113 2002 4 9.20753e+00 3.15891e+00 239 2002 5 1.24562e+01 1.72997e+00 817 2002 6 2.11684e+01 2.46605e+00 975 2002 7 2.58001e+01 1.18248e+00 2700 2002 8 2.49998e+01 1.10287e+00 2903 2002 9 2.30952e+01 1.85072e+00 3863 2002 10 1.63647e+01 3.90145e+00 1596 2002 11 5.31069e+00 1.77217e+00 756 2002 12 8.86197e-01 6.84176e-01 493 2003 1 9.09907e-01 6.79085e-02 54 2003 2 nan nan 0 2003 3 1.51527e+00 1.09404e+00 184 2003 4 8.63100e+00 2.03176e+00 637 2003 5 1.46688e+01 9.82777e-01 960 2003 6 2.05658e+01 3.09993e+00 1672 2003 7 2.37108e+01 8.20066e-01 3216 2003 8 2.49276e+01 1.09029e+00 2900 2003 9 2.12701e+01 1.49221e+00 3456 2003 10 1.30020e+01 1.55004e+00 1369 2003 11 8.51010e+00 1.59004e+00 919 2003 12 2.70065e+00 1.26547e+00 400 2004 1 2.06188e+00 2.77477e-01 8 2004 2 6.87065e-01 1.37732e-01 46 2004 3 2.43119e+00 7.52386e-01 286 2004 4 7.35485e+00 2.21949e+00 527 2004 5 1.63513e+01 3.07827e+00 644 2004 6 2.10607e+01 1.30933e+00 2269 2004 7 2.29434e+01 1.20908e+00 1868 2004 8 2.25935e+01 1.27716e+00 2501 2004 9 2.17602e+01 1.49029e+00 3035 2004 10 1.61563e+01 2.47295e+00 1257 2004 11 9.17579e+00 1.99621e+00 996 2004 12 3.39240e+00 1.47740e+00 298 2005 1 nan nan 0 2005 2 6.21134e-01 1.17635e-01 97 2005 3 8.07668e-01 4.72397e-01 373 2005 4 8.67056e+00 1.94746e+00 691 2005 5 1.35073e+01 3.05899e+00 1686 2005 6 2.24805e+01 1.92635e+00 2421 2005 7 2.61202e+01 1.39257e+00 3045 2005 8 2.63941e+01 1.36923e+00 3156 2005 9 2.27533e+01 1.29893e+00 4027 2005 10 1.65966e+01 2.92100e+00 1950 2005 11 8.09711e+00 2.81125e+00 653 2005 12 -3.58750e-01 2.13234e-02 4 2006 1 1.77246e+00 6.38293e-01 441 2006 2 1.60370e+00 9.97051e-01 127 2006 3 3.17514e+00 9.29954e-01 680 2006 4 1.11325e+01 3.13267e+00 745 2006 5 1.57147e+01 2.72283e+00 1022 2006 6 2.25371e+01 1.33015e+00 2261 2006 7 2.53039e+01 1.42663e+00 3388 2006 8 2.59927e+01 1.63990e+00 2643 2006 9 1.95068e+01 1.86351e+00 1899 2006 10 1.29664e+01 3.08261e+00 1471 2006 11 6.75605e+00 8.35508e-01 678 2006 12 3.01066e+00 1.62660e+00 136 2007 1 3.96565e+00 1.01148e+00 310 2007 2 nan nan 0 2007 3 1.99029e+00 8.42316e-01 225 2007 4 6.97365e+00 2.77784e+00 492 2007 5 1.68542e+01 2.37410e+00 1517 2007 6 2.31488e+01 1.58145e+00 2684 2007 7 2.40689e+01 9.41346e-01 2998 2007 8 2.54619e+01 1.30568e+00 2645 2007 9 2.22778e+01 1.91174e+00 3418 2007 10 1.88048e+01 3.34863e+00 2446 2007 11 8.91482e+00 2.99352e+00 939 2007 12 1.41306e+00 1.00517e+00 306 2008 1 3.23774e+00 2.57335e-01 62 2008 2 1.04545e+00 2.32437e-01 22 2008 3 2.68838e+00 1.04783e+00 588 2008 4 1.06163e+01 3.38479e+00 770 2008 5 1.46263e+01 1.02458e+00 989 2008 6 2.16071e+01 2.00600e+00 1941 2008 7 2.45182e+01 1.31494e+00 3321 2008 8 2.42989e+01 1.47925e+00 3384 2008 9 2.14670e+01 1.58900e+00 2922 2008 10 1.48924e+01 2.60462e+00 2088 2008 11 4.42487e+00 2.24405e+00 629 2008 12 9.55846e-01 3.41610e-01 65 2009 1 -4.18896e-01 1.09077e-01 77 2009 2 5.07969e-01 6.28286e-02 64 2009 3 5.47143e+00 1.73130e+00 786 2009 4 7.09125e+00 1.19562e+00 866 2009 5 1.58097e+01 1.43892e+00 1225 2009 6 2.18281e+01 3.21863e+00 1331 2009 7 2.27154e+01 8.32859e-01 2331 2009 8 2.41171e+01 1.06940e+00 2472 2009 9 2.18344e+01 9.02868e-01 2948 2009 10 1.24279e+01 2.68394e+00 916 2009 11 9.52273e+00 1.19017e+00 1065 2009 12 4.91780e+00 1.42249e+00 363 2010 1 nan nan 0 2010 2 8.83333e-02 1.81491e-01 3 2010 3 4.90872e+00 1.53222e+00 391 2010 4 1.08531e+01 1.15493e+00 864 2010 5 1.72400e+01 3.29669e+00 1173 2010 6 2.37331e+01 1.30712e+00 1723 2010 7 2.64325e+01 1.30070e+00 3435 2010 8 2.56427e+01 1.09341e+00 3362 2010 9 2.09088e+01 2.40024e+00 2049 2010 10 1.45030e+01 1.47057e+00 2101 2010 11 8.61557e+00 1.50287e+00 957 2010 12 1.05373e+00 3.48498e-01 51 2011 1 -1.24762e-01 1.32884e-01 21 2011 2 9.89632e-01 1.28959e-01 68 2011 3 3.54023e+00 7.54904e-01 393 2011 4 6.93371e+00 2.49314e+00 209 2011 5 1.47546e+01 2.79263e+00 596 2011 6 2.18684e+01 1.50375e+00 2200 2011 7 2.67038e+01 1.54888e+00 3647 2011 8 2.50742e+01 1.32344e+00 2927 2011 9 2.14335e+01 2.72832e+00 1599 2011 10 1.38555e+01 2.49150e+00 1589 2011 11 8.54533e+00 1.45081e+00 678 2011 12 3.88079e+00 1.21973e+00 707 2012 1 1.41502e+00 6.31295e-01 203 2012 2 1.32203e+00 4.86867e-01 590 2012 3 3.77930e+00 3.56257e+00 266 2012 4 1.06882e+01 1.05879e+00 1374 2012 5 1.87091e+01 2.64745e+00 2166 2012 6 2.28008e+01 1.95434e+00 2785 2012 7 2.67726e+01 9.04438e-01 4000 2012 8 2.49687e+01 1.49171e+00 3787 2012 9 2.15935e+01 2.71617e+00 2606 2012 10 1.38201e+01 1.58940e+00 1159 2012 11 6.92054e+00 1.10848e+00 1169 2012 12 3.64273e+00 1.49992e+00 864 2013 1 1.29395e+00 8.52489e-01 368 2013 2 3.14113e-01 2.44498e-01 265 2013 3 1.58582e+00 9.35192e-01 580 2013 4 7.81563e+00 2.56223e+00 1174 2013 5 1.64163e+01 2.02424e+00 1202 2013 6 2.17303e+01 1.59998e+00 1670 2013 7 2.55199e+01 1.71186e+00 2038 2013 8 2.33125e+01 9.97466e-01 2815 2013 9 2.16133e+01 2.29187e+00 2612 2013 10 1.66609e+01 3.31055e+00 2326 2013 11 6.62522e+00 2.35000e+00 968 2013 12 6.35143e-01 6.63244e-01 70 2014 1 2.74280e-01 7.84038e-02 118 2014 2 1.91667e-01 6.48181e-01 3 2014 3 4.37633e-01 3.76618e-01 169 2014 4 8.05379e+00 2.94409e+00 572 2014 5 1.63352e+01 3.04728e+00 1203 2014 6 2.21710e+01 1.43990e+00 1349 2014 7 2.40145e+01 1.04065e+00 1926 2014 8 2.35766e+01 9.96621e-01 2593 2014 9 2.18435e+01 2.64294e+00 2830 2014 10 1.40311e+01 1.69264e+00 1191 2014 11 7.03310e+00 3.00765e+00 487 2014 12 2.08187e+00 4.18629e-01 529 2015 1 5.42750e-01 2.26856e-01 20 2015 2 nan nan 0 2015 3 7.66769e-01 4.00046e-01 277 2015 4 8.72038e+00 1.64738e+00 773 2015 5 1.60961e+01 1.93112e+00 1159 2015 6 2.01341e+01 2.39960e+00 1085 2015 7 2.36697e+01 2.06932e+00 2519 2015 8 2.42880e+01 1.13613e+00 2424 2015 9 2.23238e+01 1.80383e+00 3098 2015 10 1.44936e+01 1.73429e+00 1561 2015 11 9.95816e+00 2.38545e+00 1175 2015 12 6.15421e+00 1.15703e+00 208 2016 1 1.37901e+00 1.11512e+00 167 2016 2 1.45396e+00 4.29718e-01 140 2016 3 4.82903e+00 1.81192e+00 325 2016 4 6.88831e+00 1.88668e+00 974 2016 5 1.56443e+01 2.86488e+00 1664 2016 6 2.28495e+01 1.56875e+00 2001 2016 7 2.56003e+01 1.53318e+00 2506 2016 8 2.66888e+01 1.14176e+00 2911 2016 9 2.36585e+01 1.27527e+00 3125 2016 10 1.75815e+01 1.71012e+00 2431 2016 11 1.08340e+01 2.25509e+00 1450 2016 12 4.13459e+00 2.04524e+00 170 2017 1 4.32653e-01 3.44402e-01 147 2017 2 2.21072e+00 1.65612e+00 138 2017 3 2.56472e+00 1.43385e+00 653 2017 4 9.15611e+00 2.92492e+00 221 2017 5 1.37183e+01 2.56003e+00 1364 2017 6 2.11194e+01 1.50084e+00 2114 2017 7 2.46021e+01 1.22214e+00 2637 2017 8 2.40028e+01 8.57171e-01 2648 2017 9 2.15474e+01 2.16569e+00 3205 2017 10 1.81400e+01 2.53735e+00 1536 2017 11 7.45550e+00 1.93084e+00 670 2017 12 4.47752e+00 9.29835e-01 517 2018 1 6.30667e-01 9.78797e-01 15 2018 2 4.54438e+00 2.09156e+00 73 2018 3 2.59019e+00 9.78504e-01 893 2018 4 6.59739e+00 2.35911e+00 1073 2018 5 1.76571e+01 3.49336e+00 766 2018 6 2.25373e+01 2.07806e+00 1876 2018 7 2.59271e+01 9.75489e-01 3106 2018 8 2.53436e+01 8.67221e-01 2474 2018 9 2.30148e+01 2.21147e+00 2153 2018 10 1.48554e+01 3.84865e+00 1393 2018 11 5.92565e+00 1.93831e+00 239 2018 12 1.86844e+00 4.51171e-01 360 2019 1 9.86875e-01 4.27282e-01 88 2019 2 nan nan 0 2019 3 2.73682e+00 1.30685e+00 598 2019 4 8.67859e+00 2.85765e+00 642 2019 5 1.33170e+01 2.31221e+00 826 2019 6 2.07522e+01 1.76726e+00 1304 2019 7 2.58720e+01 1.21734e+00 2792 2019 8 2.49611e+01 1.67036e+00 3222 2019 9 2.20201e+01 8.26349e-01 2626 2019 10 1.57511e+01 2.60072e+00 2515 2019 11 5.58074e+00 2.33833e+00 964 2019 12 1.94398e+00 1.11211e+00 667 2020 1 1.93437e+00 7.02345e-01 328 2020 2 9.83758e-01 5.77011e-01 620 2020 3 3.04416e+00 1.97083e+00 891 2020 4 7.55518e+00 8.07785e-01 1481 2020 5 1.34734e+01 3.55018e+00 1328 2020 6 2.17690e+01 1.74032e+00 3153 2020 7 2.67554e+01 1.34114e+00 3844 2020 8 2.55441e+01 7.48016e-01 3005 2020 9 2.02403e+01 2.05046e+00 3586 2020 10 1.47723e+01 1.77281e+00 2359 2020 11 8.85415e+00 1.80480e+00 2587 2020 12 3.95840e+00 1.36539e+00 827 2021 1 7.17792e-01 3.61908e-01 342 2021 2 1.52642e+00 4.53024e-01 330 2021 3 4.46055e+00 1.85296e+00 1618 2021 4 9.15835e+00 1.94758e+00 1536 2021 5 1.45759e+01 3.04909e+00 2044 2021 6 2.26138e+01 1.96981e+00 2126 2021 7 2.47954e+01 9.99992e-01 2823 2021 8 2.59785e+01 1.15299e+00 3476 2021 9 2.19913e+01 2.50826e+00 3368 2021 10 1.81247e+01 1.85866e+00 1897 2021 11 8.55417e+00 2.66206e+00 2509 2021 12 3.90965e+00 5.90736e-01 964 2022 1 1.78952e+00 9.23729e-01 436 2022 2 4.64520e-01 2.39157e-01 375 2022 3 2.61252e+00 1.51490e+00 890 2022 4 7.62062e+00 1.19608e+00 885 2022 5 1.69059e+01 2.89141e+00 1155 2022 6 2.33193e+01 1.60907e+00 3631 2022 7 2.50728e+01 8.78594e-01 3118 2022 8 2.50386e+01 1.20264e+00 3857 2022 9 2.26809e+01 2.06877e+00 2603 2022 10 1.49352e+01 2.15163e+00 1867 2022 11 1.00645e+01 3.60890e+00 1711 2022 12 3.18613e+00 4.34590e-01 408 2023 1 1.23318e+00 5.25738e-01 307 2023 2 2.38912e+00 8.24808e-01 701 2023 3 3.93056e+00 1.07870e+00 1465 2023 4 8.95483e+00 2.20342e+00 1266 2023 5 1.69219e+01 2.49139e+00 2639 2023 6 2.12222e+01 1.23178e+00 2816 2023 7 2.51910e+01 9.56786e-01 3298 2023 8 2.42588e+01 1.29338e+00 3947 2023 9 2.22378e+01 1.40935e+00 2921 2023 10 1.77710e+01 3.34102e+00 2279 2023 11 8.70946e+00 1.42248e+00 2843 2023 12 3.53606e+00 4.35858e-01 982 2024 1 2.71121e+00 2.87348e-01 128 2024 2 2.31184e+00 1.01949e+00 1685 2024 3 5.10444e+00 9.69535e-01 1602 2024 4 nan nan 0