YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 3.56495e+00 1.13274e-01 99 2000 3 3.55984e+00 8.95549e-01 448 2000 4 5.78026e+00 1.44479e-01 190 2000 5 9.17928e+00 1.92976e+00 187 2000 6 1.45952e+01 1.40815e+00 216 2000 7 1.74111e+01 8.08873e-01 491 2000 8 1.85267e+01 8.19319e-01 368 2000 9 1.68591e+01 1.50485e+00 404 2000 10 1.26721e+01 1.87616e+00 269 2000 11 9.52368e+00 5.97726e-01 492 2000 12 7.40249e+00 1.13054e+00 550 2001 1 4.31293e+00 5.72649e-01 466 2001 2 3.88727e+00 3.49510e-01 313 2001 3 2.88596e+00 1.08338e+00 307 2001 4 5.26893e+00 1.34669e+00 374 2001 5 1.11440e+01 9.16236e-01 319 2001 6 1.49271e+01 1.08551e+00 287 2001 7 1.60780e+01 9.83407e-01 471 2001 8 1.74388e+01 5.93958e-01 257 2001 9 1.63317e+01 8.55944e-01 713 2001 10 1.16804e+01 5.20863e-01 481 2001 11 9.57169e+00 8.04757e-01 411 2001 12 7.98697e+00 9.64968e-01 527 2002 1 5.49686e+00 6.55105e-01 411 2002 2 4.38366e+00 5.56452e-01 228 2002 3 4.44033e+00 7.92089e-01 196 2002 4 6.99021e+00 1.52488e+00 378 2002 5 8.46020e+00 2.27877e+00 320 2002 6 1.34797e+01 3.80199e+00 190 2002 7 1.82657e+01 1.99208e+00 1716 2002 8 1.96131e+01 1.50963e+00 1781 2002 9 1.73932e+01 1.43168e+00 1463 2002 10 1.42174e+01 1.68024e+00 2019 2002 11 1.02540e+01 8.69577e-01 1613 2002 12 6.61643e+00 1.03674e+00 2163 2003 1 3.90700e+00 7.69363e-01 920 2003 2 2.44119e+00 7.21557e-01 691 2003 3 2.43973e+00 9.62288e-01 776 2003 4 4.33882e+00 1.97357e+00 680 2003 5 9.23317e+00 2.34901e+00 942 2003 6 1.36416e+01 2.81007e+00 769 2003 7 1.80022e+01 1.80241e+00 1394 2003 8 1.94267e+01 1.16908e+00 1862 2003 9 1.70632e+01 1.15043e+00 1928 2003 10 1.32427e+01 1.93374e+00 1892 2003 11 8.91811e+00 1.80455e+00 1247 2003 12 6.31169e+00 9.65244e-01 1764 2004 1 3.75988e+00 1.04805e+00 1125 2004 2 1.90601e+00 6.80268e-01 1129 2004 3 2.71035e+00 1.34497e-01 585 2004 4 5.12668e+00 1.63079e+00 844 2004 5 9.88737e+00 2.83692e+00 830 2004 6 1.45617e+01 2.03635e+00 1282 2004 7 1.73952e+01 1.68659e+00 1693 2004 8 1.82407e+01 1.45358e+00 1863 2004 9 1.64695e+01 1.46206e+00 1706 2004 10 1.34411e+01 1.56044e+00 1510 2004 11 9.51519e+00 1.25703e+00 2550 2004 12 6.60682e+00 1.40576e+00 1811 2005 1 4.15988e+00 1.04758e+00 643 2005 2 2.28884e+00 7.62913e-01 664 2005 3 2.28190e+00 6.47577e-01 1047 2005 4 6.49059e+00 1.45531e+00 1479 2005 5 8.55924e+00 1.43385e+00 727 2005 6 1.42896e+01 2.50626e+00 450 2005 7 1.84774e+01 1.72378e+00 1770 2005 8 1.94970e+01 1.10117e+00 2152 2005 9 1.67431e+01 1.17883e+00 1746 2005 10 1.18551e+01 1.10573e+00 941 2005 11 9.58772e+00 1.24369e+00 1733 2005 12 6.46249e+00 1.12903e+00 1905 2006 1 4.84333e+00 5.60403e-01 1251 2006 2 3.66908e+00 1.22054e+00 944 2006 3 3.27319e+00 7.85478e-01 1142 2006 4 6.51134e+00 1.22341e+00 1454 2006 5 9.63617e+00 2.24691e+00 845 2006 6 1.51055e+01 1.86845e+00 540 2006 7 1.79853e+01 2.07316e+00 1089 2006 8 1.81545e+01 1.17555e+00 1939 2006 9 1.74540e+01 1.09120e+00 1616 2006 10 1.28148e+01 1.28846e+00 1859 2006 11 1.04738e+01 1.38956e+00 969 2006 12 8.32210e+00 1.16491e+00 2110 2007 1 6.36782e+00 8.44817e-01 1215 2007 2 3.33156e+00 1.00451e+00 1220 2007 3 3.96061e+00 7.11819e-01 1289 2007 4 5.19727e+00 1.25889e+00 973 2007 5 1.01079e+01 2.71124e+00 1663 2007 6 1.52109e+01 1.60491e+00 1259 2007 7 1.80449e+01 2.29312e+00 1638 2007 8 1.81552e+01 1.77212e+00 1969 2007 9 1.62447e+01 1.03994e+00 1491 2007 10 1.33694e+01 7.24442e-01 1552 2007 11 9.68377e+00 1.72288e+00 1468 2007 12 5.97328e+00 1.53001e+00 1358 2008 1 3.86667e+00 8.65780e-01 1318 2008 2 3.15576e+00 4.30453e-01 1024 2008 3 3.27344e+00 3.85966e-01 1304 2008 4 6.54305e+00 2.34264e+00 1243 2008 5 1.01320e+01 1.31201e+00 1634 2008 6 1.64656e+01 1.89604e+00 1466 2008 7 1.88369e+01 1.47500e+00 2106 2008 8 1.93154e+01 1.27496e+00 3018 2008 9 1.72247e+01 2.20277e+00 1974 2008 10 1.33434e+01 1.28651e+00 2209 2008 11 9.60370e+00 1.16563e+00 1704 2008 12 7.02258e+00 9.39311e-01 1530 2009 1 4.03700e+00 9.94113e-01 1236 2009 2 2.43214e+00 8.22417e-01 995 2009 3 3.17399e+00 4.31271e-01 765 2009 4 5.28307e+00 1.43563e+00 1212 2009 5 9.93582e+00 2.09185e+00 1012 2009 6 1.39239e+01 1.73817e+00 812 2009 7 1.73753e+01 1.20341e+00 1999 2009 8 1.95038e+01 1.77748e+00 2081 2009 9 1.67834e+01 7.38371e-01 2520 2009 10 1.23943e+01 1.60858e+00 1932 2009 11 1.07677e+01 7.87882e-01 1518 2009 12 7.44922e+00 1.53007e+00 2169 2010 1 4.17874e+00 8.63031e-01 1304 2010 2 3.31710e+00 4.77904e-01 936 2010 3 3.88381e+00 1.02188e+00 1127 2010 4 7.86779e+00 9.87370e-01 1275 2010 5 1.16624e+01 2.79185e+00 1342 2010 6 1.63307e+01 2.52480e+00 1215 2010 7 1.92242e+01 1.82920e+00 2149 2010 8 1.80411e+01 1.71446e+00 1580 2010 9 1.70586e+01 1.63333e+00 2009 2010 10 1.35459e+01 1.07241e+00 1984 2010 11 9.55076e+00 1.18328e+00 1634 2010 12 6.61114e+00 1.53177e+00 1904 2011 1 4.41615e+00 1.14347e+00 1234 2011 2 2.98840e+00 6.44145e-01 1245 2011 3 3.35058e+00 8.27641e-01 1468 2011 4 5.00953e+00 1.33429e+00 978 2011 5 9.67923e+00 2.44743e+00 752 2011 6 1.49591e+01 2.60451e+00 1218 2011 7 1.93849e+01 1.83345e+00 2302 2011 8 1.92957e+01 1.39467e+00 1531 2011 9 1.65348e+01 1.14710e+00 1936 2011 10 1.42655e+01 1.11821e+00 1358 2011 11 1.12238e+01 6.82135e-01 1544 2011 12 8.90584e+00 8.99559e-01 1829 2012 1 6.31686e+00 1.02138e+00 1825 2012 2 4.80652e+00 6.86459e-01 1586 2012 3 5.22714e+00 1.29900e+00 586 2012 4 7.65297e+00 1.30553e+00 2007 2012 5 1.28609e+01 3.26839e+00 845 2012 6 1.64691e+01 3.08451e+00 1247 2012 7 2.00207e+01 1.35582e+00 2538 2012 8 1.98828e+01 1.36206e+00 2397 2012 9 1.65908e+01 1.71377e+00 1779 2012 10 1.36098e+01 1.00233e+00 1965 2012 11 1.03474e+01 1.00761e+00 1608 2012 12 8.35232e+00 6.59013e-01 875 2013 1 6.34840e+00 9.42067e-01 1705 2013 2 3.99624e+00 1.29501e+00 1079 2013 3 4.02343e+00 4.57879e-01 973 2013 4 6.53788e+00 2.45719e+00 1806 2013 5 1.10506e+01 1.84066e+00 1382 2013 6 1.57505e+01 2.29403e+00 1550 2013 7 2.17298e+01 1.74158e+00 1635 2013 8 1.88825e+01 1.79576e+00 2067 2013 9 1.62481e+01 1.50617e+00 2230 2013 10 1.45543e+01 1.26576e+00 2374 2013 11 1.03307e+01 1.08013e+00 1682 2013 12 6.55925e+00 1.05966e+00 1275 2014 1 4.09427e+00 9.11886e-01 1025 2014 2 2.38616e+00 1.02201e+00 736 2014 3 2.36844e+00 8.49368e-01 898 2014 4 4.75980e+00 9.07673e-01 1392 2014 5 9.92964e+00 2.34282e+00 892 2014 6 1.59446e+01 1.83360e+00 1632 2014 7 1.75593e+01 1.28956e+00 1669 2014 8 1.88066e+01 1.56169e+00 2671 2014 9 1.73436e+01 1.38572e+00 2170 2014 10 1.44570e+01 1.70439e+00 1586 2014 11 1.01243e+01 1.12774e+00 1191 2014 12 7.26399e+00 9.57283e-01 1052 2015 1 4.89756e+00 1.14366e+00 1558 2015 2 3.42679e+00 1.21872e+00 448 2015 3 2.27048e+00 3.30389e-01 536 2015 4 5.36329e+00 2.00145e+00 967 2015 5 1.11351e+01 1.34674e+00 763 2015 6 1.46000e+01 2.37220e+00 935 2015 7 1.93987e+01 1.94087e+00 2578 2015 8 1.97805e+01 1.67532e+00 2777 2015 9 1.88537e+01 1.51368e+00 2370 2015 10 1.35859e+01 1.21563e+00 1831 2015 11 1.12523e+01 9.38966e-01 1788 2015 12 9.01620e+00 1.03943e+00 1110 2016 1 6.36326e+00 1.25426e+00 1839 2016 2 4.64628e+00 6.79357e-01 1177 2016 3 5.03864e+00 7.15645e-01 1119 2016 4 6.35939e+00 1.24897e+00 2164 2016 5 9.29715e+00 2.06319e+00 852 2016 6 1.53150e+01 1.34454e+00 1617 2016 7 1.97481e+01 2.03334e+00 1976 2016 8 2.03426e+01 1.59616e+00 2944 2016 9 1.80330e+01 1.18069e+00 1996 2016 10 1.49880e+01 1.33909e+00 2229 2016 11 1.14318e+01 1.35686e+00 2086 2016 12 8.31994e+00 1.29842e+00 2087 2017 1 5.87963e+00 1.24488e+00 1378 2017 2 4.96130e+00 8.49024e-01 1146 2017 3 4.10308e+00 6.48624e-01 1435 2017 4 5.60910e+00 1.70554e+00 999 2017 5 9.83478e+00 2.50272e+00 856 2017 6 1.46973e+01 2.53377e+00 820 2017 7 1.77456e+01 1.56859e+00 1667 2017 8 1.83750e+01 1.16612e+00 2632 2017 9 1.67530e+01 1.39803e+00 1399 2017 10 1.47977e+01 1.57788e+00 1747 2017 11 9.69523e+00 1.16060e+00 1981 2017 12 6.90406e+00 1.06237e+00 1990 2018 1 3.74185e+00 1.03070e+00 1121 2018 2 3.51121e+00 5.95434e-01 783 2018 3 3.69774e+00 9.50460e-01 984 2018 4 4.83881e+00 1.55584e+00 1172 2018 5 1.02530e+01 3.34861e+00 306 2018 6 1.59106e+01 1.58444e+00 1321 2018 7 1.91768e+01 1.58139e+00 2133 2018 8 2.09833e+01 1.65351e+00 1942 2018 9 1.95318e+01 1.89797e+00 2028 2018 10 1.41941e+01 1.55921e+00 1843 2018 11 1.02718e+01 1.42973e+00 1486 2018 12 6.48092e+00 1.11880e+00 1674 2019 1 4.98410e+00 1.32145e+00 1689 2019 2 3.38150e+00 5.46197e-01 1268 2019 3 3.03401e+00 8.19712e-01 1485 2019 4 5.13564e+00 1.38836e+00 1185 2019 5 1.05761e+01 1.36530e+00 776 2019 6 1.43748e+01 1.64006e+00 898 2019 7 2.03925e+01 2.08614e+00 2746 2019 8 1.86985e+01 1.85780e+00 2580 2019 9 1.77197e+01 7.49509e-01 3266 2019 10 1.40477e+01 8.89327e-01 1718 2019 11 1.08201e+01 1.51506e+00 2335 2019 12 6.68046e+00 9.30470e-01 2167 2020 1 5.32205e+00 6.85309e-01 1837 2020 2 4.40104e+00 3.05117e-01 1838 2020 3 5.12354e+00 8.18172e-01 2023 2020 4 6.16012e+00 4.81249e-01 1609 2020 5 1.00018e+01 2.40753e+00 2035 2020 6 1.60746e+01 2.35416e+00 2123 2020 7 2.02037e+01 1.72708e+00 2110 2020 8 1.98114e+01 1.65531e+00 1383 2020 9 1.72521e+01 1.23386e+00 2758 2020 10 1.44151e+01 1.23929e+00 2715 2020 11 1.10832e+01 1.18502e+00 1718 2020 12 7.51558e+00 1.06360e+00 1839 2021 1 5.22071e+00 8.08778e-01 1717 2021 2 3.70276e+00 4.78188e-01 1529 2021 3 4.60064e+00 7.88713e-01 2594 2021 4 6.76243e+00 1.25146e+00 2046 2021 5 1.15937e+01 2.05933e+00 2064 2021 6 1.68808e+01 2.80116e+00 2290 2021 7 2.00445e+01 1.60977e+00 1536 2021 8 2.07228e+01 1.59866e+00 1726 2021 9 1.87177e+01 9.86738e-01 2510 2021 10 1.61266e+01 1.43866e+00 2103 2021 11 1.20377e+01 1.05060e+00 2789 2021 12 9.25180e+00 8.20090e-01 1454 2022 1 6.49077e+00 8.70621e-01 2081 2022 2 4.39399e+00 5.47113e-01 1955 2022 3 5.00160e+00 6.39611e-01 1916 2022 4 6.85296e+00 6.60030e-01 1234 2022 5 1.14409e+01 3.03765e+00 1625 2022 6 1.61343e+01 1.79370e+00 2685 2022 7 1.83642e+01 1.01463e+00 2278 2022 8 2.03572e+01 1.47022e+00 2700 2022 9 1.83842e+01 1.89433e+00 2823 2022 10 1.45914e+01 7.35041e-01 2363 2022 11 1.21835e+01 1.41825e+00 3346 2022 12 8.12561e+00 1.37270e+00 2158 2023 1 5.51484e+00 5.24899e-01 1157 2023 2 5.06290e+00 3.68456e-01 971 2023 3 5.05306e+00 7.85356e-01 2023 2023 4 7.34647e+00 1.64075e+00 1876 2023 5 1.22913e+01 1.45823e+00 3497 2023 6 1.63246e+01 2.02433e+00 1508 2023 7 2.06865e+01 1.54296e+00 2547 2023 8 1.84647e+01 1.14334e+00 2519 2023 9 1.91091e+01 1.75562e+00 2354 2023 10 1.58705e+01 1.46191e+00 1944 2023 11 1.11417e+01 1.17683e+00 3002 2023 12 8.04320e+00 6.66251e-01 2417 2024 1 6.13714e+00 7.80068e-01 1898 2024 2 4.12561e+00 4.06106e-01 2579 2024 3 5.03881e+00 6.62235e-01 1406 2024 4 5.67922e+00 6.78073e-02 64