YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.29587e+00 9.75701e-02 52 2000 3 2.40087e+00 5.67153e-01 184 2000 4 3.26027e+00 2.80448e-01 128 2000 5 6.24006e+00 1.40754e+00 88 2000 6 1.12784e+01 8.97566e-01 81 2000 7 1.73425e+01 1.18002e+00 822 2000 8 2.01379e+01 6.15824e-01 739 2000 9 1.77304e+01 2.34205e+00 480 2000 10 1.22203e+01 7.39159e-01 408 2000 11 1.03781e+01 2.00603e+00 273 2000 12 5.17975e+00 1.58161e+00 319 2001 1 1.77049e+00 8.68515e-01 288 2001 2 1.21297e+00 3.17992e-01 296 2001 3 1.23159e+00 5.51833e-01 452 2001 4 1.80679e+00 6.49245e-01 159 2001 5 7.12622e+00 8.33237e-01 139 2001 6 9.47500e+00 5.01348e-01 6 2001 7 1.76352e+01 2.79873e+00 759 2001 8 2.07526e+01 9.23994e-01 1134 2001 9 1.68622e+01 1.86454e+00 445 2001 10 1.21203e+01 4.05769e+00 321 2001 11 6.27106e+00 6.66938e-01 301 2001 12 6.39497e+00 1.24529e+00 559 2002 1 4.38841e+00 7.90364e-01 214 2002 2 2.77206e+00 6.32960e-01 395 2002 3 2.00000e+00 1.16038e+00 56 2002 4 2.90712e+00 7.89568e-01 307 2002 5 4.71514e+00 6.41491e-01 255 2002 6 1.11958e+01 5.66176e-01 205 2002 7 2.00937e+01 1.17636e+00 1794 2002 8 1.98225e+01 1.01627e+00 1791 2002 9 1.87637e+01 1.91353e+00 760 2002 10 1.15176e+01 2.36892e+00 912 2002 11 8.65069e+00 1.21691e+00 848 2002 12 4.76564e+00 1.06080e+00 919 2003 1 2.80078e+00 9.46902e-01 597 2003 2 1.11788e+00 3.62521e-01 330 2003 3 1.05895e+00 3.01052e-01 272 2003 4 1.25794e+00 8.51839e-01 350 2003 5 4.37633e+00 9.84896e-01 60 2003 6 1.31569e+01 3.06380e+00 63 2003 7 1.67387e+01 1.72715e+00 1311 2003 8 2.03317e+01 1.30283e+00 2169 2003 9 1.77868e+01 1.44604e+00 1243 2003 10 7.67667e+00 5.47469e-01 381 2003 11 7.27513e+00 1.41243e+00 892 2003 12 4.50677e+00 7.48142e-01 756 2004 1 2.41487e+00 7.72605e-01 278 2004 2 1.37183e+00 4.84256e-01 752 2004 3 1.63535e+00 6.14753e-01 325 2004 4 2.64645e+00 8.79937e-01 636 2004 5 5.09601e+00 1.92519e+00 149 2004 6 1.08741e+01 1.13253e+00 542 2004 7 1.73507e+01 1.82012e+00 1599 2004 8 1.77591e+01 1.50584e+00 1494 2004 9 1.63579e+01 9.62588e-01 1052 2004 10 1.37514e+01 2.36541e+00 533 2004 11 9.52886e+00 1.39489e+00 758 2004 12 4.78082e+00 1.28086e+00 273 2005 1 2.07677e+00 8.69018e-01 437 2005 2 1.10555e+00 9.08270e-01 174 2005 3 8.05710e-01 4.07211e-01 507 2005 4 3.02033e+00 7.00415e-01 389 2005 5 8.05069e+00 2.70418e+00 750 2005 6 1.33855e+01 2.35659e+00 172 2005 7 2.02154e+01 2.13689e+00 2264 2005 8 2.08761e+01 8.97103e-01 1636 2005 9 1.94800e+01 1.94523e+00 1488 2005 10 1.36576e+01 7.31988e-01 1503 2005 11 7.04388e+00 3.16721e+00 397 2005 12 2.86193e+00 1.14799e+00 363 2006 1 2.79527e+00 5.63749e-01 279 2006 2 1.94211e+00 6.18715e-01 480 2006 3 2.13367e+00 4.08637e-01 953 2006 4 3.35660e+00 8.55528e-01 584 2006 5 7.00675e+00 9.91262e-01 346 2006 6 1.41437e+01 1.39648e+00 1799 2006 7 1.76885e+01 1.51385e+00 810 2006 8 2.12294e+01 1.01657e+00 2393 2006 9 2.03290e+01 1.57086e+00 1760 2006 10 7.55728e+00 2.60172e+00 1113 2006 11 5.98913e+00 6.44641e-01 509 2006 12 4.70416e+00 7.43268e-01 478 2007 1 3.29658e+00 9.15923e-01 495 2007 2 1.51281e+00 8.70555e-01 283 2007 3 9.45291e-01 5.01333e-01 241 2007 4 1.68674e+00 7.70152e-01 550 2007 5 5.18135e+00 5.14383e-01 163 2007 6 1.34177e+01 3.30851e+00 475 2007 7 1.74515e+01 2.43622e+00 1204 2007 8 2.09691e+01 8.59250e-01 1942 2007 9 1.66061e+01 2.86755e+00 972 2007 10 1.43012e+01 1.11447e+00 957 2007 11 7.18311e+00 1.69255e+00 428 2007 12 3.82067e+00 1.00708e+00 307 2008 1 1.79074e+00 9.08420e-01 135 2008 2 1.03808e+00 6.33233e-01 206 2008 3 1.08687e+00 3.97522e-01 762 2008 4 2.79770e+00 5.63772e-01 230 2008 5 6.02482e+00 1.28378e+00 329 2008 6 1.17039e+01 1.61505e+00 619 2008 7 1.82431e+01 2.35580e+00 1240 2008 8 2.08707e+01 5.75333e-01 4164 2008 9 1.83796e+01 1.56377e+00 2055 2008 10 1.47806e+01 2.36919e+00 749 2008 11 5.57226e+00 1.18720e+00 675 2008 12 2.69261e+00 7.98503e-01 203 2009 1 1.46578e+00 4.58759e-01 238 2009 2 8.84931e-01 4.11623e-01 360 2009 3 1.22786e+00 4.54461e-01 581 2009 4 2.15501e+00 8.46978e-01 749 2009 5 4.21580e+00 1.20914e+00 212 2009 6 1.77700e+01 1.37002e+00 207 2009 7 1.60648e+01 1.17702e+00 1762 2009 8 1.73205e+01 8.69967e-01 1014 2009 9 1.94390e+01 1.11456e+00 3409 2009 10 1.29488e+01 1.63900e+00 744 2009 11 7.22165e+00 1.18939e+00 665 2009 12 4.96533e+00 1.35621e+00 338 2010 1 1.85987e+00 4.54328e-01 227 2010 2 9.63590e-01 6.84060e-01 156 2010 3 2.10330e+00 9.70816e-01 512 2010 4 4.28069e+00 8.20474e-01 682 2010 5 7.45470e+00 2.92023e+00 456 2010 6 1.54988e+01 2.22788e+00 1232 2010 7 1.95586e+01 1.59174e+00 1491 2010 8 2.13461e+01 1.37374e+00 1927 2010 9 1.47506e+01 1.44228e+00 1060 2010 10 1.44255e+01 1.87296e+00 2526 2010 11 5.98180e+00 7.67134e-01 756 2010 12 4.55854e+00 6.34415e-01 284 2011 1 2.54991e+00 4.11796e-01 232 2011 2 1.94208e+00 6.79955e-01 347 2011 3 1.16960e+00 6.12250e-01 862 2011 4 1.98868e+00 8.81581e-01 329 2011 5 3.98053e+00 7.77949e-01 170 2011 6 1.28139e+01 2.81842e+00 334 2011 7 1.91626e+01 1.82720e+00 599 2011 8 2.15859e+01 1.40379e+00 2435 2011 9 1.83315e+01 1.12752e+00 1988 2011 10 1.06818e+01 1.01067e+00 1056 2011 11 7.99052e+00 1.64396e+00 759 2011 12 5.20553e+00 4.55299e-01 483 2012 1 3.62983e+00 8.00830e-01 320 2012 2 2.66903e+00 4.80051e-01 1031 2012 3 2.74494e+00 7.11098e-01 233 2012 4 4.29936e+00 8.76468e-01 690 2012 5 8.09474e+00 1.17972e+00 492 2012 6 1.33159e+01 1.66090e+00 1031 2012 7 2.15639e+01 1.60871e+00 2867 2012 8 2.16614e+01 9.62436e-01 2506 2012 9 1.81537e+01 2.78989e+00 1049 2012 10 1.09835e+01 3.16736e+00 627 2012 11 9.09946e+00 1.95018e+00 465 2012 12 5.33067e+00 9.08767e-01 335 2013 1 3.68166e+00 1.06577e+00 483 2013 2 1.36185e+00 8.14913e-01 362 2013 3 1.65283e+00 6.29942e-01 557 2013 4 2.50238e+00 4.01938e-01 911 2013 5 4.42723e+00 1.06096e+00 179 2013 6 1.22788e+01 1.97664e+00 277 2013 7 1.84690e+01 2.11235e+00 1000 2013 8 1.74718e+01 1.32185e+00 1365 2013 9 1.83014e+01 1.02039e+00 1773 2013 10 1.32405e+01 2.31247e+00 640 2013 11 5.38882e+00 1.04520e+00 841 2013 12 3.71618e+00 8.89066e-01 207 2014 1 1.56010e+00 4.62057e-01 101 2014 2 5.33073e-01 4.11487e-01 96 2014 3 2.93293e-01 1.56990e-01 41 2014 4 1.03881e+00 3.93148e-01 331 2014 5 2.99669e+00 8.35810e-01 189 2014 6 8.87270e+00 1.37025e+00 74 2014 7 1.23447e+01 1.01001e+00 214 2014 8 1.79014e+01 1.50819e+00 1505 2014 9 1.24231e+01 1.22708e+00 654 2014 10 1.14730e+01 5.50803e-01 856 2014 11 7.30215e+00 1.94316e+00 608 2014 12 3.67964e+00 7.42200e-01 551 2015 1 2.07547e+00 1.00373e+00 169 2015 2 3.95000e-01 0.00000e+00 1 2015 3 1.16094e+00 5.44226e-01 471 2015 4 2.33513e+00 4.33478e-01 225 2015 5 5.67289e+00 1.67828e+00 57 2015 6 1.18407e+01 2.96156e+00 398 2015 7 1.58572e+01 1.56531e+00 695 2015 8 2.01776e+01 1.32511e+00 610 2015 9 1.78676e+01 1.15857e+00 1010 2015 10 1.45577e+01 2.56057e+00 937 2015 11 5.28370e+00 1.00827e+00 650 2015 12 5.11206e+00 9.07611e-01 218 2016 1 3.90812e+00 1.00795e+00 659 2016 2 2.24241e+00 5.94434e-01 253 2016 3 2.12440e+00 8.47256e-01 555 2016 4 2.61743e+00 5.75673e-01 567 2016 5 5.70607e+00 1.83070e+00 585 2016 6 1.57221e+01 2.35956e+00 774 2016 7 1.88607e+01 1.18206e+00 1250 2016 8 2.25371e+01 1.29810e+00 2614 2016 9 1.98662e+01 1.57166e+00 1153 2016 10 1.58506e+01 2.37390e+00 725 2016 11 9.89281e+00 2.12677e+00 1044 2016 12 3.33317e+00 8.87164e-01 495 2017 1 2.20891e+00 5.98006e-01 244 2017 2 2.24250e+00 3.23169e-01 495 2017 3 1.94412e+00 6.68354e-01 844 2017 4 3.32704e+00 8.84330e-01 250 2017 5 5.56278e+00 1.48365e+00 580 2017 6 1.08648e+01 1.97822e+00 444 2017 7 1.97710e+01 1.54384e+00 2316 2017 8 1.97209e+01 8.56498e-01 2629 2017 9 1.86489e+01 6.81783e-01 2304 2017 10 1.40219e+01 3.24921e+00 558 2017 11 5.92939e+00 1.30983e+00 558 2017 12 4.24520e+00 9.53050e-01 622 2018 1 1.80513e+00 4.96007e-01 418 2018 2 1.65367e+00 5.82329e-01 248 2018 3 1.40699e+00 5.69034e-01 1204 2018 4 1.98408e+00 5.96979e-01 825 2018 5 4.24701e+00 2.24522e-01 82 2018 6 1.33097e+01 2.65614e+00 58 2018 7 1.94640e+01 1.30691e+00 1419 2018 8 2.23651e+01 1.02074e+00 1962 2018 9 1.80623e+01 7.29068e-01 1568 2018 10 1.04074e+01 2.16017e+00 586 2018 11 5.35741e+00 5.44972e-01 412 2018 12 3.45804e+00 6.87594e-01 311 2019 1 2.14497e+00 5.50557e-01 162 2019 2 2.82086e-01 1.23303e-01 163 2019 3 1.27698e+00 6.29009e-01 657 2019 4 2.56565e+00 2.61898e-01 260 2019 5 6.39458e+00 3.81138e+00 12 2019 6 1.29750e+01 1.81965e+00 251 2019 7 1.79990e+01 1.06370e+00 1260 2019 8 1.98289e+01 9.44789e-01 2666 2019 9 1.56583e+01 1.59040e+00 650 2019 10 1.15854e+01 3.57932e+00 1380 2019 11 7.36758e+00 1.22034e+00 994 2019 12 4.26724e+00 7.80624e-01 483 2020 1 2.92670e+00 8.20798e-01 625 2020 2 2.01901e+00 4.71023e-01 1458 2020 3 2.55491e+00 3.57073e-01 1486 2020 4 2.92915e+00 7.04831e-01 1600 2020 5 6.33785e+00 2.68319e+00 1278 2020 6 1.32298e+01 3.05725e+00 2479 2020 7 2.12358e+01 1.50548e+00 2392 2020 8 2.11092e+01 7.86872e-01 1358 2020 9 1.57759e+01 2.04507e+00 1984 2020 10 1.16995e+01 1.54459e+00 1410 2020 11 7.59780e+00 1.68819e+00 1899 2020 12 5.94832e+00 8.17979e-01 675 2021 1 3.25262e+00 6.02585e-01 594 2021 2 2.04637e+00 7.34445e-01 837 2021 3 2.56002e+00 6.10886e-01 2962 2021 4 4.12340e+00 7.32527e-01 1572 2021 5 7.90951e+00 2.25769e+00 1317 2021 6 1.42775e+01 2.22797e+00 2358 2021 7 1.93637e+01 2.32487e+00 3724 2021 8 2.07439e+01 1.30631e+00 2931 2021 9 1.90557e+01 1.72955e+00 3188 2021 10 1.65330e+01 1.08721e+00 1859 2021 11 8.88681e+00 3.94649e+00 1481 2021 12 4.52532e+00 7.82436e-01 878 2022 1 2.39063e+00 7.87751e-01 403 2022 2 9.52580e-01 8.63239e-01 250 2022 3 1.23303e+00 5.48477e-01 989 2022 4 2.27586e+00 6.11071e-01 619 2022 5 7.10314e+00 2.81674e+00 445 2022 6 1.13631e+01 1.83766e+00 1192 2022 7 1.73343e+01 2.23050e+00 2199 2022 8 1.98398e+01 2.10871e+00 3165 2022 9 1.89873e+01 1.24515e+00 2747 2022 10 1.40376e+01 3.58241e+00 1806 2022 11 6.48565e+00 1.64840e+00 1496 2022 12 4.13069e+00 6.04041e-01 392 2023 1 2.44203e+00 3.85921e-01 445 2023 2 1.97977e+00 3.88916e-01 1944 2023 3 2.08074e+00 4.86485e-01 2037 2023 4 3.34690e+00 1.02884e+00 1515 2023 5 8.64549e+00 3.37150e+00 729 2023 6 1.54178e+01 1.88547e+00 1780 2023 7 1.94160e+01 1.24124e+00 2800 2023 8 2.02676e+01 1.34015e+00 2963 2023 9 1.81140e+01 6.21785e-01 1792 2023 10 1.62526e+01 2.51902e+00 1306 2023 11 6.36107e+00 1.95424e+00 1908 2023 12 4.20794e+00 4.28459e-01 1088 2024 1 2.67679e+00 7.04721e-01 232 2024 2 2.69358e+00 4.71034e-01 1776 2024 3 3.19503e+00 2.87407e-01 1818 2024 4 nan nan 0