YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 4.09176e+00 1.12022e-01 51 2000 3 3.89158e+00 3.11769e-01 339 2000 4 4.17898e+00 5.30085e-01 305 2000 5 8.07175e+00 1.51616e+00 77 2000 6 1.37389e+01 1.82861e+00 304 2000 7 1.92101e+01 7.81014e-01 880 2000 8 2.04079e+01 8.37066e-01 736 2000 9 1.86597e+01 2.38533e+00 946 2000 10 1.42377e+01 1.08177e+00 615 2000 11 1.27540e+01 1.60253e+00 567 2000 12 7.83043e+00 1.61029e+00 219 2001 1 2.90018e+00 1.02481e+00 220 2001 2 1.78111e+00 6.30246e-01 18 2001 3 1.89455e+00 4.77197e-01 348 2001 4 2.63855e+00 9.43028e-01 152 2001 5 7.65201e+00 2.01371e+00 67 2001 6 1.03593e+01 3.51851e-01 14 2001 7 1.99384e+01 2.38136e+00 1312 2001 8 2.19753e+01 1.53771e+00 1615 2001 9 1.98863e+01 1.42633e+00 1556 2001 10 1.39649e+01 1.19371e+00 488 2001 11 1.13446e+01 7.73204e-01 596 2001 12 9.14125e+00 3.76417e-01 583 2002 1 6.09213e+00 7.36782e-01 214 2002 2 4.46875e+00 7.01599e-01 393 2002 3 3.43890e+00 4.14199e-01 458 2002 4 4.01959e+00 5.06962e-01 367 2002 5 5.18134e+00 4.58549e-01 569 2002 6 1.52962e+01 2.23507e+00 293 2002 7 2.23601e+01 1.02959e+00 2995 2002 8 2.19583e+01 7.31699e-01 3560 2002 9 2.14682e+01 1.73800e+00 3226 2002 10 1.59655e+01 2.22904e+00 1378 2002 11 9.59420e+00 7.03329e-01 755 2002 12 6.17262e+00 7.25466e-01 887 2003 1 4.55687e+00 4.13385e-01 273 2003 2 7.10763e-01 5.55550e-01 236 2003 3 9.99050e-01 6.34173e-01 279 2003 4 2.02068e+00 7.13722e-01 504 2003 5 6.16352e+00 1.91494e+00 118 2003 6 1.38467e+01 1.31233e+00 309 2003 7 1.90595e+01 1.28618e+00 2439 2003 8 2.14157e+01 1.15436e+00 3242 2003 9 2.07317e+01 5.73315e-01 2637 2003 10 1.37644e+01 8.62987e-01 1780 2003 11 9.50320e+00 1.07616e+00 773 2003 12 6.75667e+00 1.13304e+00 711 2004 1 4.59010e+00 7.44669e-01 260 2004 2 1.69177e+00 4.05564e-01 282 2004 3 1.55311e+00 9.18432e-01 190 2004 4 2.98063e+00 6.01470e-01 879 2004 5 5.58276e+00 1.93084e+00 426 2004 6 1.42724e+01 8.91846e-01 1138 2004 7 1.90705e+01 1.56127e+00 2212 2004 8 1.90892e+01 1.27882e+00 2788 2004 9 1.97708e+01 4.79200e-01 4142 2004 10 1.44135e+01 1.89129e+00 924 2004 11 1.09381e+01 6.50829e-01 830 2004 12 6.87949e+00 1.26235e+00 571 2005 1 4.19887e+00 6.82487e-01 641 2005 2 3.39899e+00 9.33744e-01 272 2005 3 1.23948e+00 6.48320e-01 347 2005 4 3.42057e+00 8.80068e-01 757 2005 5 6.31030e+00 2.20431e+00 712 2005 6 1.79492e+01 2.46005e+00 945 2005 7 2.06081e+01 1.87013e+00 2596 2005 8 2.29487e+01 7.02642e-01 3126 2005 9 2.14938e+01 7.59751e-01 3115 2005 10 1.69063e+01 1.78149e+00 1912 2005 11 1.16340e+01 9.52378e-01 481 2005 12 5.81193e+00 3.29081e-01 75 2006 1 4.35468e+00 6.37841e-01 231 2006 2 2.61891e+00 1.13325e+00 233 2006 3 2.65978e+00 5.50539e-01 912 2006 4 3.65415e+00 6.92108e-01 1154 2006 5 7.43501e+00 1.81166e+00 392 2006 6 1.52977e+01 2.58405e+00 1256 2006 7 2.13256e+01 2.05988e+00 2849 2006 8 2.26405e+01 1.23993e+00 2876 2006 9 2.00323e+01 1.45970e+00 1853 2006 10 1.50114e+01 2.79129e+00 1613 2006 11 9.37424e+00 6.30428e-01 811 2006 12 6.39016e+00 1.08457e+00 821 2007 1 5.73184e+00 5.35160e-01 761 2007 2 2.54538e+00 7.29250e-01 182 2007 3 1.94822e+00 6.25643e-01 353 2007 4 2.92034e+00 6.77466e-01 736 2007 5 5.81747e+00 3.33978e+00 87 2007 6 1.56537e+01 3.32935e+00 958 2007 7 1.88813e+01 1.54900e+00 2913 2007 8 2.19926e+01 8.58383e-01 2859 2007 9 2.04822e+01 1.45301e+00 2773 2007 10 1.72453e+01 2.07003e+00 2168 2007 11 1.21205e+01 1.89886e+00 930 2007 12 6.48327e+00 9.34826e-01 211 2008 1 3.68611e+00 1.19879e+00 167 2008 2 2.32763e+00 2.03745e-01 190 2008 3 2.12739e+00 4.76279e-01 1046 2008 4 3.03034e+00 3.49938e-01 793 2008 5 4.47691e+00 1.23548e+00 346 2008 6 1.46196e+01 2.96712e+00 904 2008 7 1.93627e+01 1.94793e+00 2619 2008 8 2.09733e+01 1.21627e+00 4043 2008 9 1.89464e+01 1.65077e+00 2186 2008 10 1.48243e+01 1.59430e+00 1486 2008 11 9.69192e+00 1.58762e+00 626 2008 12 4.82640e+00 3.37578e-01 275 2009 1 3.44844e+00 1.21189e+00 138 2009 2 1.58770e+00 6.14146e-01 280 2009 3 1.43078e+00 4.12170e-01 685 2009 4 2.55355e+00 6.96385e-01 691 2009 5 4.22899e+00 1.13445e+00 494 2009 6 1.52656e+01 3.07265e+00 485 2009 7 1.86243e+01 1.03474e+00 2879 2009 8 2.03392e+01 8.53545e-01 2335 2009 9 1.91394e+01 7.45349e-01 2613 2009 10 1.35759e+01 1.40403e+00 534 2009 11 9.27056e+00 9.86545e-01 899 2009 12 7.29599e+00 8.44628e-01 208 2010 1 3.46520e+00 5.18703e-01 202 2010 2 1.37805e+00 1.30584e+00 149 2010 3 2.26199e+00 8.45070e-01 841 2010 4 3.83141e+00 6.33741e-01 887 2010 5 4.68813e+00 1.28851e+00 350 2010 6 1.69723e+01 2.28688e+00 1241 2010 7 2.26218e+01 1.47275e+00 3175 2010 8 2.39136e+01 8.15089e-01 4430 2010 9 1.85923e+01 8.99885e-01 2015 2010 10 1.61120e+01 1.13919e+00 3592 2010 11 1.20584e+01 1.87384e+00 589 2010 12 5.57503e+00 3.75748e-01 361 2011 1 3.73438e+00 4.69088e-01 89 2011 2 2.26575e+00 9.97060e-01 492 2011 3 1.36182e+00 4.55014e-01 1088 2011 4 2.24089e+00 9.91206e-01 376 2011 5 4.44247e+00 1.73738e+00 247 2011 6 1.37134e+01 4.14105e+00 298 2011 7 2.20822e+01 1.46641e+00 2067 2011 8 2.20422e+01 1.16177e+00 3407 2011 9 1.74701e+01 1.94825e+00 1171 2011 10 1.13581e+01 8.51039e-01 931 2011 11 1.07947e+01 1.06769e+00 1240 2011 12 8.09755e+00 5.21563e-01 577 2012 1 5.90882e+00 7.53522e-01 972 2012 2 4.39730e+00 6.67339e-01 1447 2012 3 3.99782e+00 6.51551e-01 346 2012 4 5.28364e+00 5.62296e-01 1630 2012 5 9.05921e+00 1.53512e+00 679 2012 6 1.55210e+01 2.44325e+00 1712 2012 7 2.24064e+01 1.32951e+00 3735 2012 8 2.24087e+01 1.46027e+00 3672 2012 9 2.03614e+01 2.00378e+00 2862 2012 10 1.56900e+01 1.49523e+00 1004 2012 11 7.98777e+00 1.12673e+00 1046 2012 12 6.79354e+00 5.84493e-01 502 2013 1 5.41769e+00 1.16022e+00 486 2013 2 2.88138e+00 6.80747e-01 272 2013 3 2.62163e+00 7.86517e-01 667 2013 4 2.78807e+00 6.51014e-01 794 2013 5 5.96540e+00 1.71536e+00 455 2013 6 1.42762e+01 2.65381e+00 401 2013 7 2.17459e+01 2.46349e+00 2870 2013 8 2.00679e+01 1.40475e+00 3392 2013 9 1.95151e+01 1.43991e+00 2729 2013 10 1.65023e+01 2.03574e+00 1967 2013 11 1.01515e+01 1.36590e+00 722 2013 12 6.29514e+00 9.00430e-01 71 2014 1 2.69435e+00 1.33252e+00 230 2014 2 9.04643e-01 2.09366e-01 112 2014 3 4.97137e-01 1.38849e-01 124 2014 4 1.14477e+00 6.10265e-01 302 2014 5 2.49403e+00 6.05591e-01 190 2014 6 1.72120e+01 2.25484e+00 136 2014 7 1.76854e+01 2.15164e+00 1127 2014 8 1.73054e+01 1.98251e+00 1181 2014 9 1.79629e+01 2.07652e+00 2777 2014 10 1.39919e+01 1.09498e+00 1243 2014 11 1.03411e+01 1.30406e+00 297 2014 12 6.00911e+00 2.92679e-01 715 2015 1 3.06207e+00 7.05674e-01 376 2015 2 1.87128e+00 9.31697e-01 47 2015 3 9.08177e-01 4.85655e-01 417 2015 4 2.33317e+00 3.95486e-01 539 2015 5 4.63622e+00 1.55271e+00 188 2015 6 1.55624e+01 1.38749e+00 223 2015 7 1.80666e+01 2.65610e+00 1913 2015 8 2.09285e+01 8.70559e-01 2815 2015 9 1.99642e+01 1.10284e+00 3361 2015 10 1.34642e+01 2.67867e+00 1112 2015 11 1.06275e+01 7.90280e-01 1748 2015 12 8.77554e+00 8.00518e-01 600 2016 1 5.67470e+00 1.14518e+00 363 2016 2 3.85092e+00 5.94873e-01 363 2016 3 2.79329e+00 7.10321e-01 571 2016 4 3.40372e+00 5.54998e-01 494 2016 5 6.95491e+00 2.12374e+00 561 2016 6 1.55874e+01 1.84042e+00 1001 2016 7 2.02865e+01 2.16013e+00 2677 2016 8 2.38680e+01 7.16055e-01 4179 2016 9 2.21662e+01 6.88717e-01 3322 2016 10 1.82099e+01 1.64402e+00 1733 2016 11 1.31313e+01 1.45511e+00 1682 2016 12 6.57560e+00 3.49620e-01 215 2017 1 5.26745e+00 5.87654e-01 347 2017 2 3.87183e+00 5.05580e-01 616 2017 3 2.99821e+00 3.63585e-01 482 2017 4 3.97933e+00 7.92845e-01 329 2017 5 6.25556e+00 1.63135e+00 764 2017 6 1.52133e+01 2.03774e+00 1267 2017 7 1.97645e+01 1.34643e+00 2865 2017 8 2.12682e+01 1.02670e+00 2897 2017 9 1.99989e+01 1.02919e+00 3559 2017 10 1.76649e+01 1.24853e+00 1409 2017 11 9.36557e+00 1.20351e+00 562 2017 12 7.81237e+00 9.19225e-01 689 2018 1 3.53426e+00 6.38383e-01 278 2018 2 2.17300e+00 5.19135e-01 250 2018 3 2.03238e+00 6.20666e-01 998 2018 4 2.64630e+00 5.86420e-01 944 2018 5 nan nan 0 2018 6 1.58691e+01 3.06794e+00 619 2018 7 2.17236e+01 1.15200e+00 3117 2018 8 2.32208e+01 1.25075e+00 3267 2018 9 2.06268e+01 9.36201e-01 2057 2018 10 1.34134e+01 1.38614e+00 875 2018 11 8.77319e+00 7.56468e-01 180 2018 12 6.02264e+00 3.41596e-01 242 2019 1 4.70594e+00 4.82175e-01 430 2019 2 2.02135e+00 3.07160e-01 126 2019 3 1.24674e+00 6.40733e-01 639 2019 4 2.38773e+00 4.98331e-01 588 2019 5 4.80173e+00 1.01483e+00 139 2019 6 1.06613e+01 3.50129e+00 258 2019 7 2.02446e+01 8.05736e-01 2954 2019 8 2.14838e+01 7.34184e-01 4438 2019 9 1.96052e+01 6.46942e-01 1988 2019 10 1.48752e+01 2.05075e+00 1990 2019 11 7.43870e+00 6.25602e-01 706 2019 12 5.42939e+00 3.93814e-01 440 2020 1 4.82042e+00 5.86367e-01 225 2020 2 3.43335e+00 3.42885e-01 1366 2020 3 3.02727e+00 3.38196e-01 1820 2020 4 3.48570e+00 4.14629e-01 1648 2020 5 7.10115e+00 3.41891e+00 2376 2020 6 1.51429e+01 3.38244e+00 2523 2020 7 2.26380e+01 1.52683e+00 3678 2020 8 2.22169e+01 1.13047e+00 2511 2020 9 1.89738e+01 1.15739e+00 3378 2020 10 1.50782e+01 1.51851e+00 2431 2020 11 9.72275e+00 1.17467e+00 1968 2020 12 7.63028e+00 5.16054e-01 648 2021 1 4.94229e+00 4.42905e-01 1020 2021 2 3.13162e+00 1.03387e+00 651 2021 3 2.71420e+00 6.47016e-01 2302 2021 4 3.89817e+00 6.41851e-01 2066 2021 5 7.12971e+00 2.17601e+00 2684 2021 6 1.50759e+01 2.97867e+00 2628 2021 7 1.99128e+01 2.05019e+00 3573 2021 8 2.27655e+01 1.21265e+00 4396 2021 9 2.14031e+01 2.07286e+00 3673 2021 10 1.66786e+01 1.51253e+00 2507 2021 11 1.11152e+01 1.10149e+00 981 2021 12 7.96757e+00 7.50666e-01 955 2022 1 5.68233e+00 5.37802e-01 270 2022 2 2.96457e+00 4.17685e-01 948 2022 3 2.63845e+00 5.34914e-01 1098 2022 4 3.40360e+00 4.10642e-01 742 2022 5 5.91226e+00 1.47628e+00 822 2022 6 1.44018e+01 3.07724e+00 2111 2022 7 2.07012e+01 1.48089e+00 4036 2022 8 2.21010e+01 9.13837e-01 4208 2022 9 2.11017e+01 1.92246e+00 2667 2022 10 1.43169e+01 2.05422e+00 1527 2022 11 9.91183e+00 1.48980e+00 1876 2022 12 7.53222e+00 2.70013e-01 605 2023 1 4.39553e+00 5.53513e-01 301 2023 2 3.87788e+00 3.07485e-01 1667 2023 3 3.42656e+00 3.12827e-01 1705 2023 4 4.23795e+00 9.28055e-01 2381 2023 5 9.44741e+00 3.06881e+00 1659 2023 6 1.36294e+01 2.39501e+00 2257 2023 7 1.98747e+01 1.70793e+00 4481 2023 8 2.11840e+01 1.24444e+00 3944 2023 9 1.94525e+01 7.62712e-01 2934 2023 10 1.71414e+01 3.13969e+00 1108 2023 11 1.09616e+01 8.72998e-01 1958 2023 12 7.68419e+00 7.55037e-01 1040 2024 1 4.40054e+00 1.44370e-01 56 2024 2 4.30083e+00 4.73910e-01 2256 2024 3 4.32170e+00 4.17992e-01 1739 2024 4 1.27500e+00 8.49521e-01 22