YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 3.53008e+00 2.77333e-02 64 2000 3 3.23992e+00 1.22864e+00 262 2000 4 5.56302e+00 2.71001e-01 174 2000 5 7.26481e+00 1.11216e+00 180 2000 6 1.41649e+01 1.59708e+00 222 2000 7 1.62382e+01 1.65196e+00 320 2000 8 1.87466e+01 8.17751e-01 384 2000 9 1.78714e+01 1.19724e+00 404 2000 10 1.26076e+01 1.02654e+00 304 2000 11 9.45647e+00 8.14494e-01 491 2000 12 7.71467e+00 1.26585e+00 465 2001 1 5.13420e+00 6.43894e-01 466 2001 2 4.91574e+00 3.80171e-01 310 2001 3 3.65258e+00 5.95366e-01 291 2001 4 4.76503e+00 1.57316e+00 351 2001 5 1.10029e+01 5.96652e-01 216 2001 6 1.43664e+01 4.51788e-01 128 2001 7 1.67684e+01 1.40323e+00 783 2001 8 1.82303e+01 7.19628e-01 369 2001 9 1.67824e+01 4.55804e-01 591 2001 10 1.20747e+01 5.25041e-01 473 2001 11 9.32050e+00 1.15424e+00 443 2001 12 7.92558e+00 1.05595e+00 512 2002 1 6.33745e+00 5.73476e-01 488 2002 2 3.87110e+00 1.45271e+00 292 2002 3 4.85517e+00 4.19244e-01 259 2002 4 6.61239e+00 1.20497e+00 501 2002 5 8.61418e+00 1.33568e+00 386 2002 6 1.28859e+01 7.92922e-01 277 2002 7 1.84861e+01 1.79677e+00 1686 2002 8 1.94748e+01 1.73802e+00 2134 2002 9 1.74890e+01 1.49220e+00 1342 2002 10 1.43171e+01 1.77653e+00 1681 2002 11 1.03567e+01 7.59376e-01 1407 2002 12 7.26433e+00 7.69859e-01 1892 2003 1 4.75809e+00 5.81392e-01 931 2003 2 2.93932e+00 1.07057e+00 974 2003 3 1.97078e+00 1.23539e+00 830 2003 4 4.29983e+00 1.83102e+00 715 2003 5 8.20987e+00 2.31683e+00 520 2003 6 1.40558e+01 2.04532e+00 628 2003 7 1.85062e+01 1.36579e+00 1579 2003 8 1.91647e+01 1.18409e+00 1434 2003 9 1.70456e+01 9.72467e-01 1845 2003 10 1.39355e+01 2.00117e+00 1892 2003 11 9.03754e+00 1.37545e+00 1373 2003 12 6.41611e+00 9.03709e-01 1665 2004 1 4.06809e+00 1.23308e+00 850 2004 2 2.68591e+00 4.88554e-01 1256 2004 3 2.78150e+00 3.88288e-01 704 2004 4 4.38206e+00 1.03715e+00 618 2004 5 9.22297e+00 1.91065e+00 694 2004 6 1.36555e+01 1.87045e+00 1364 2004 7 1.69743e+01 1.30955e+00 1615 2004 8 1.80977e+01 1.23932e+00 2110 2004 9 1.65585e+01 1.73777e+00 1793 2004 10 1.35066e+01 1.69270e+00 1407 2004 11 9.37866e+00 1.34853e+00 2361 2004 12 7.15122e+00 1.27039e+00 1497 2005 1 4.70740e+00 1.11478e+00 657 2005 2 2.79938e+00 5.31565e-01 789 2005 3 2.61930e+00 4.66159e-01 950 2005 4 5.97219e+00 1.48278e+00 1187 2005 5 8.15733e+00 1.41885e+00 952 2005 6 1.42771e+01 2.80577e+00 330 2005 7 1.90122e+01 1.99456e+00 1712 2005 8 1.93297e+01 1.67510e+00 2274 2005 9 1.79060e+01 1.50607e+00 2140 2005 10 1.29511e+01 1.41295e+00 1109 2005 11 9.71580e+00 1.21947e+00 1693 2005 12 7.11839e+00 8.65110e-01 1552 2006 1 5.19459e+00 7.75355e-01 1247 2006 2 4.12610e+00 8.77319e-01 1211 2006 3 3.64310e+00 1.08596e+00 1432 2006 4 5.93475e+00 1.20779e+00 1290 2006 5 9.00104e+00 2.03958e+00 825 2006 6 1.47586e+01 2.41660e+00 654 2006 7 1.80698e+01 1.43067e+00 1498 2006 8 1.86681e+01 1.63733e+00 2445 2006 9 1.69791e+01 8.54747e-01 1967 2006 10 1.32812e+01 1.89849e+00 1880 2006 11 1.02987e+01 1.43499e+00 1021 2006 12 8.30597e+00 9.00677e-01 1821 2007 1 6.48709e+00 9.61635e-01 1092 2007 2 4.28065e+00 6.59918e-01 1141 2007 3 4.19020e+00 5.24507e-01 1324 2007 4 4.63611e+00 1.86771e+00 771 2007 5 9.63959e+00 2.75552e+00 1104 2007 6 1.44806e+01 2.07904e+00 987 2007 7 1.81235e+01 1.80228e+00 1776 2007 8 1.81557e+01 1.47396e+00 2084 2007 9 1.68754e+01 1.23816e+00 2137 2007 10 1.32731e+01 1.02864e+00 1671 2007 11 9.46100e+00 1.84183e+00 1315 2007 12 6.75525e+00 1.12000e+00 1219 2008 1 4.40503e+00 5.47589e-01 1018 2008 2 3.26981e+00 6.34090e-01 1131 2008 3 3.17180e+00 3.48996e-01 1235 2008 4 7.15897e+00 2.19734e+00 1221 2008 5 1.00320e+01 2.07794e+00 1376 2008 6 1.64648e+01 1.49056e+00 1467 2008 7 1.90426e+01 1.27845e+00 2060 2008 8 1.96326e+01 1.30158e+00 3420 2008 9 1.74260e+01 1.43607e+00 1858 2008 10 1.31814e+01 1.49547e+00 2066 2008 11 1.02007e+01 1.14055e+00 1129 2008 12 7.51852e+00 8.89188e-01 1226 2009 1 4.57888e+00 9.17510e-01 1385 2009 2 3.11889e+00 9.37760e-01 864 2009 3 2.77530e+00 1.13532e+00 1016 2009 4 5.07433e+00 1.04584e+00 1195 2009 5 1.02633e+01 1.69403e+00 1029 2009 6 1.29675e+01 1.84870e+00 477 2009 7 1.67226e+01 1.51158e+00 1637 2009 8 2.00133e+01 1.45883e+00 1899 2009 9 1.65853e+01 1.00365e+00 2566 2009 10 1.31566e+01 1.67770e+00 1786 2009 11 1.05266e+01 6.44500e-01 1443 2009 12 8.27878e+00 1.05060e+00 1717 2010 1 4.78312e+00 7.87804e-01 1486 2010 2 3.78497e+00 1.25602e+00 939 2010 3 3.73173e+00 8.35330e-01 787 2010 4 7.54785e+00 1.09275e+00 1223 2010 5 1.09077e+01 2.50413e+00 1697 2010 6 1.67660e+01 2.31344e+00 1448 2010 7 2.00276e+01 1.56999e+00 2806 2010 8 1.85358e+01 1.52896e+00 1809 2010 9 1.74495e+01 1.42851e+00 2012 2010 10 1.33642e+01 1.25564e+00 2073 2010 11 9.76800e+00 1.03633e+00 1411 2010 12 7.22598e+00 1.37867e+00 1491 2011 1 5.31434e+00 8.91429e-01 1445 2011 2 3.78316e+00 4.83835e-01 1173 2011 3 3.55858e+00 3.22688e-01 1352 2011 4 5.03434e+00 7.19554e-01 830 2011 5 9.42179e+00 2.09708e+00 849 2011 6 1.47497e+01 2.55531e+00 1297 2011 7 1.97100e+01 1.73548e+00 2548 2011 8 1.91205e+01 1.25435e+00 1706 2011 9 1.57032e+01 1.28429e+00 1442 2011 10 1.46958e+01 1.13798e+00 1506 2011 11 1.11212e+01 1.15289e+00 1259 2011 12 8.42452e+00 1.49188e+00 1808 2012 1 6.80914e+00 8.76328e-01 1632 2012 2 5.12208e+00 7.87884e-01 1894 2012 3 5.52598e+00 6.94253e-01 601 2012 4 7.13583e+00 1.43529e+00 2092 2012 5 1.27930e+01 3.23281e+00 909 2012 6 1.61313e+01 2.60568e+00 1122 2012 7 2.03495e+01 1.51602e+00 2665 2012 8 2.08696e+01 1.01297e+00 2519 2012 9 1.69776e+01 1.58802e+00 2241 2012 10 1.35611e+01 9.39257e-01 1829 2012 11 1.07556e+01 8.31792e-01 1456 2012 12 8.43456e+00 1.49887e+00 929 2013 1 7.06309e+00 1.30446e+00 1575 2013 2 5.28986e+00 7.85766e-01 784 2013 3 4.34118e+00 5.75018e-01 852 2013 4 6.28944e+00 2.14240e+00 1685 2013 5 1.06100e+01 1.87884e+00 1448 2013 6 1.54913e+01 2.64125e+00 1188 2013 7 2.07533e+01 1.90620e+00 1729 2013 8 1.93967e+01 1.20256e+00 2450 2013 9 1.65751e+01 1.53360e+00 1994 2013 10 1.43679e+01 1.21838e+00 2204 2013 11 1.00693e+01 1.09122e+00 1608 2013 12 7.19011e+00 7.88740e-01 1001 2014 1 5.05008e+00 1.01152e+00 882 2014 2 3.12541e+00 9.27175e-01 808 2014 3 3.18645e+00 4.62362e-01 1014 2014 4 4.65395e+00 9.95746e-01 1425 2014 5 1.03149e+01 1.88253e+00 1018 2014 6 1.57374e+01 1.97068e+00 1839 2014 7 1.76363e+01 1.38802e+00 1679 2014 8 1.87891e+01 1.22203e+00 2673 2014 9 1.77617e+01 2.21365e+00 2332 2014 10 1.43572e+01 1.17231e+00 1503 2014 11 1.04600e+01 9.18535e-01 1289 2014 12 8.16047e+00 8.49967e-01 899 2015 1 6.22651e+00 5.98644e-01 1279 2015 2 3.72781e+00 1.39618e+00 597 2015 3 2.71800e+00 8.05333e-01 905 2015 4 4.85386e+00 1.20353e+00 1169 2015 5 9.34565e+00 1.41032e+00 619 2015 6 1.49876e+01 2.31612e+00 777 2015 7 1.91350e+01 2.11202e+00 2241 2015 8 1.99988e+01 1.42720e+00 2825 2015 9 1.83890e+01 1.88614e+00 2043 2015 10 1.32638e+01 1.35143e+00 2036 2015 11 1.13633e+01 9.14686e-01 1546 2015 12 9.32658e+00 1.22196e+00 1117 2016 1 6.61628e+00 1.34466e+00 1988 2016 2 5.20376e+00 8.01097e-01 1051 2016 3 5.12376e+00 4.74049e-01 1106 2016 4 6.16832e+00 1.24969e+00 2082 2016 5 9.39593e+00 1.64607e+00 627 2016 6 1.54459e+01 1.96593e+00 1738 2016 7 1.94043e+01 2.14451e+00 2114 2016 8 2.07295e+01 1.35659e+00 3305 2016 9 1.82715e+01 1.37151e+00 1928 2016 10 1.52478e+01 9.73352e-01 1460 2016 11 1.14857e+01 1.28227e+00 1771 2016 12 8.98067e+00 8.58790e-01 2098 2017 1 6.76532e+00 1.01739e+00 1374 2017 2 5.21900e+00 7.89464e-01 1149 2017 3 4.38843e+00 6.15841e-01 1423 2017 4 6.16434e+00 1.48582e+00 983 2017 5 9.72096e+00 2.26220e+00 904 2017 6 1.48752e+01 2.10107e+00 884 2017 7 1.82145e+01 2.01284e+00 1753 2017 8 1.91714e+01 1.04771e+00 2873 2017 9 1.69767e+01 7.76065e-01 1373 2017 10 1.55150e+01 1.02349e+00 1866 2017 11 1.02208e+01 1.41719e+00 2054 2017 12 7.62289e+00 1.27898e+00 1349 2018 1 3.75353e+00 1.04254e+00 1024 2018 2 3.92597e+00 4.79201e-01 822 2018 3 4.38927e+00 5.51759e-01 825 2018 4 4.78131e+00 1.38288e+00 1152 2018 5 1.06285e+01 3.15259e+00 259 2018 6 1.53160e+01 1.44074e+00 964 2018 7 1.94764e+01 1.20366e+00 2160 2018 8 2.09937e+01 1.52895e+00 2974 2018 9 1.94885e+01 2.19812e+00 1696 2018 10 1.39185e+01 1.55880e+00 1682 2018 11 1.03236e+01 1.33120e+00 1372 2018 12 6.89287e+00 8.95687e-01 1481 2019 1 5.64255e+00 9.18137e-01 1372 2019 2 3.80308e+00 8.55012e-01 1429 2019 3 3.31246e+00 7.15050e-01 1572 2019 4 5.02107e+00 1.52629e+00 1017 2019 5 9.66290e+00 2.03894e+00 733 2019 6 1.38359e+01 1.50771e+00 958 2019 7 2.00282e+01 1.75306e+00 2295 2019 8 1.91852e+01 1.40168e+00 2515 2019 9 1.74170e+01 8.37255e-01 3367 2019 10 1.38576e+01 1.13022e+00 1765 2019 11 1.10606e+01 1.57748e+00 2254 2019 12 7.18610e+00 8.27278e-01 1833 2020 1 5.98109e+00 7.27009e-01 1847 2020 2 4.91134e+00 3.92440e-01 1822 2020 3 5.09293e+00 9.09279e-01 2028 2020 4 6.10434e+00 6.01330e-01 1641 2020 5 9.19158e+00 2.07483e+00 2145 2020 6 1.57096e+01 2.26175e+00 2231 2020 7 2.06604e+01 1.91109e+00 1820 2020 8 1.99672e+01 1.71575e+00 1677 2020 9 1.79029e+01 1.25772e+00 2523 2020 10 1.49045e+01 1.16714e+00 2563 2020 11 1.09649e+01 7.96250e-01 1649 2020 12 8.20083e+00 1.08816e+00 1802 2021 1 5.72115e+00 6.80372e-01 1534 2021 2 4.32229e+00 5.83828e-01 1620 2021 3 4.86873e+00 8.53414e-01 2647 2021 4 6.63893e+00 1.18262e+00 1975 2021 5 1.17387e+01 2.08407e+00 2401 2021 6 1.70308e+01 2.20577e+00 2057 2021 7 1.96218e+01 1.50424e+00 1775 2021 8 2.06289e+01 1.34556e+00 1514 2021 9 1.85215e+01 7.71428e-01 2474 2021 10 1.60333e+01 1.33070e+00 2169 2021 11 1.17800e+01 1.03063e+00 2717 2021 12 9.71912e+00 7.93096e-01 1402 2022 1 6.86567e+00 1.15791e+00 1500 2022 2 5.27995e+00 3.94918e-01 1847 2022 3 5.27994e+00 6.25092e-01 1969 2022 4 6.54838e+00 6.50430e-01 1204 2022 5 1.12129e+01 2.72244e+00 1485 2022 6 1.64517e+01 1.65621e+00 2692 2022 7 1.93427e+01 1.12080e+00 2729 2022 8 1.98409e+01 1.67903e+00 2998 2022 9 1.80930e+01 2.25840e+00 2554 2022 10 1.44009e+01 5.77907e-01 2179 2022 11 1.24172e+01 1.35592e+00 2987 2022 12 8.64310e+00 1.25277e+00 2017 2023 1 6.19670e+00 8.15406e-01 1189 2023 2 5.38640e+00 6.45965e-01 1206 2023 3 5.19217e+00 5.74458e-01 2371 2023 4 6.98991e+00 1.52673e+00 1777 2023 5 1.16168e+01 1.81944e+00 3854 2023 6 1.64830e+01 1.78539e+00 1689 2023 7 2.03913e+01 1.35302e+00 2449 2023 8 1.86573e+01 7.91278e-01 2308 2023 9 1.85844e+01 1.58433e+00 2238 2023 10 1.57851e+01 1.34206e+00 2031 2023 11 1.13648e+01 1.11740e+00 2491 2023 12 8.54215e+00 6.62528e-01 2112 2024 1 6.55642e+00 7.50172e-01 2247 2024 2 4.28522e+00 5.54849e-01 2197 2024 3 4.87105e+00 5.36676e-01 1499 2024 4 5.33961e+00 5.50519e-02 64