YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.59908e+00 6.19593e-02 71 2000 3 2.87785e+00 6.46343e-01 205 2000 4 3.76444e+00 3.64499e-01 62 2000 5 5.74293e+00 9.63908e-01 82 2000 6 1.16628e+01 5.17458e-01 54 2000 7 1.75743e+01 8.08859e-01 562 2000 8 2.03963e+01 6.71012e-01 630 2000 9 1.91940e+01 2.38350e+00 299 2000 10 1.10357e+01 4.65594e-01 107 2000 11 9.21622e+00 2.17875e+00 263 2000 12 4.47276e+00 1.20754e+00 259 2001 1 1.64047e+00 4.98789e-01 192 2001 2 1.09526e+00 3.01779e-01 98 2001 3 1.27006e+00 4.89084e-01 553 2001 4 2.36615e+00 9.81033e-01 87 2001 5 6.95131e+00 1.12645e+00 80 2001 6 1.13547e+01 1.03998e+00 36 2001 7 1.89192e+01 2.21121e+00 461 2001 8 2.13567e+01 1.01287e+00 924 2001 9 1.69865e+01 2.42909e+00 313 2001 10 1.34248e+01 3.24562e+00 265 2001 11 6.37204e+00 6.81007e-01 157 2001 12 5.28072e+00 1.04732e+00 492 2002 1 2.38502e+00 4.95106e-01 287 2002 2 1.93420e+00 6.74939e-01 269 2002 3 2.02915e+00 5.24728e-01 213 2002 4 4.13401e+00 7.48165e-01 141 2002 5 5.59138e+00 8.29123e-01 214 2002 6 1.18906e+01 2.29196e-01 16 2002 7 2.04297e+01 1.20159e+00 1499 2002 8 1.98608e+01 1.16827e+00 1142 2002 9 1.88173e+01 1.75692e+00 694 2002 10 1.05416e+01 1.40976e+00 574 2002 11 7.80371e+00 7.38923e-01 677 2002 12 3.94480e+00 1.35946e+00 468 2003 1 2.57253e+00 6.85806e-01 393 2003 2 4.81391e-01 2.90414e-01 338 2003 3 1.37964e+00 5.34907e-01 363 2003 4 1.51124e+00 2.31737e-01 145 2003 5 5.20889e+00 1.17502e+00 45 2003 6 1.25365e+01 1.52313e+00 24 2003 7 1.61007e+01 1.40230e+00 1218 2003 8 2.04424e+01 1.39706e+00 1933 2003 9 1.95252e+01 1.16059e+00 475 2003 10 7.62540e+00 4.74144e-01 173 2003 11 6.19646e+00 8.17811e-01 848 2003 12 4.09140e+00 7.71856e-01 589 2004 1 1.77886e+00 5.84629e-01 229 2004 2 8.80786e-01 4.27893e-01 541 2004 3 1.71660e+00 5.89648e-01 290 2004 4 2.93902e+00 1.07640e+00 481 2004 5 6.76075e+00 1.57230e+00 199 2004 6 1.14343e+01 1.81017e+00 216 2004 7 1.84424e+01 1.74186e+00 1874 2004 8 1.84387e+01 1.39024e+00 1150 2004 9 1.70306e+01 1.00371e+00 625 2004 10 1.24015e+01 1.50197e+00 515 2004 11 8.75266e+00 1.34568e+00 818 2004 12 5.09078e+00 9.01683e-01 224 2005 1 1.85887e+00 1.01567e+00 256 2005 2 6.83855e-01 4.85163e-01 83 2005 3 7.17789e-01 5.34545e-01 450 2005 4 4.02887e+00 1.21689e+00 216 2005 5 7.83368e+00 2.42369e+00 565 2005 6 1.58204e+01 1.95578e+00 121 2005 7 2.08545e+01 1.72537e+00 2244 2005 8 2.07059e+01 7.46969e-01 1094 2005 9 1.98779e+01 2.62698e+00 775 2005 10 1.24228e+01 7.25363e-01 965 2005 11 7.98294e+00 2.44982e+00 436 2005 12 3.21365e+00 1.31825e+00 395 2006 1 1.96833e+00 4.22254e-01 227 2006 2 1.33333e+00 5.09022e-01 426 2006 3 1.97862e+00 5.59986e-01 849 2006 4 4.13816e+00 1.29444e+00 506 2006 5 6.76429e+00 5.95361e-01 255 2006 6 1.41140e+01 1.53380e+00 1265 2006 7 1.87689e+01 1.69408e+00 777 2006 8 2.11172e+01 7.22552e-01 1896 2006 9 2.04571e+01 1.35077e+00 1231 2006 10 8.41265e+00 2.02482e+00 661 2006 11 6.13777e+00 5.27288e-01 390 2006 12 4.47109e+00 5.15582e-01 349 2007 1 3.46665e+00 1.13647e+00 490 2007 2 1.16083e+00 2.48384e-01 108 2007 3 1.22479e+00 3.51589e-01 329 2007 4 2.00731e+00 8.32265e-01 417 2007 5 6.55782e+00 1.41661e+00 151 2007 6 1.27953e+01 3.66709e+00 437 2007 7 1.86154e+01 2.26590e+00 1395 2007 8 2.11808e+01 9.39085e-01 1671 2007 9 1.86880e+01 2.96643e+00 625 2007 10 1.21594e+01 1.65019e+00 703 2007 11 7.65724e+00 1.56345e+00 705 2007 12 3.94915e+00 1.09308e+00 199 2008 1 1.86932e+00 5.21678e-01 103 2008 2 3.49773e-01 3.72201e-01 88 2008 3 1.14750e+00 4.58303e-01 548 2008 4 3.48154e+00 1.11083e+00 409 2008 5 7.00889e+00 8.18617e-01 429 2008 6 1.21978e+01 1.60257e+00 591 2008 7 1.73902e+01 2.78855e+00 758 2008 8 2.07311e+01 7.34559e-01 3407 2008 9 1.87748e+01 1.68801e+00 1342 2008 10 1.57043e+01 1.89304e+00 794 2008 11 5.02919e+00 1.22400e+00 394 2008 12 2.41863e+00 7.51146e-01 230 2009 1 1.61040e+00 4.03746e-01 199 2009 2 7.69775e-01 4.03045e-01 311 2009 3 1.44085e+00 5.19775e-01 499 2009 4 2.16393e+00 1.51666e+00 436 2009 5 5.70457e+00 1.18599e+00 292 2009 6 1.62433e+01 3.17405e+00 142 2009 7 1.60513e+01 1.14500e+00 1066 2009 8 1.60377e+01 1.56657e+00 281 2009 9 1.91033e+01 1.18387e+00 2695 2009 10 1.23765e+01 1.44408e+00 560 2009 11 6.80648e+00 9.87157e-01 631 2009 12 4.31101e+00 1.75879e+00 258 2010 1 2.24383e+00 4.18451e-01 201 2010 2 9.05255e-01 4.45828e-01 98 2010 3 1.83979e+00 1.18089e+00 214 2010 4 4.74057e+00 8.82610e-01 344 2010 5 6.88249e+00 1.88663e+00 348 2010 6 1.53640e+01 2.09014e+00 972 2010 7 1.91990e+01 1.50937e+00 864 2010 8 2.05805e+01 1.18322e+00 1793 2010 9 1.27650e+01 1.04364e+00 415 2010 10 1.39823e+01 1.70947e+00 1998 2010 11 5.61678e+00 1.18060e+00 442 2010 12 4.03255e+00 8.89204e-01 251 2011 1 2.08270e+00 2.46489e-01 124 2011 2 1.56955e+00 4.68547e-01 330 2011 3 1.26183e+00 3.91525e-01 693 2011 4 2.27790e+00 9.36972e-01 241 2011 5 4.56850e+00 5.82506e-01 100 2011 6 1.26069e+01 2.90524e+00 268 2011 7 1.78634e+01 1.40311e+00 197 2011 8 2.13988e+01 9.06608e-01 2214 2011 9 1.83031e+01 1.38264e+00 1438 2011 10 1.20813e+01 1.60303e+00 1238 2011 11 8.37858e+00 1.41615e+00 824 2011 12 4.94596e+00 5.72828e-01 228 2012 1 2.62617e+00 6.41662e-01 316 2012 2 2.05999e+00 7.24088e-01 750 2012 3 2.52508e+00 6.08816e-01 122 2012 4 5.37839e+00 6.66503e-01 505 2012 5 9.09856e+00 1.05254e+00 305 2012 6 1.38718e+01 2.23251e+00 741 2012 7 2.14422e+01 1.29346e+00 1976 2012 8 2.18051e+01 9.74123e-01 2285 2012 9 1.87564e+01 2.63393e+00 1549 2012 10 1.02224e+01 3.22911e+00 554 2012 11 7.62721e+00 2.00934e+00 589 2012 12 5.50997e+00 8.61083e-01 335 2013 1 2.83592e+00 4.85248e-01 395 2013 2 3.98924e-01 9.43448e-01 144 2013 3 6.11670e-01 7.63421e-01 470 2013 4 2.65068e+00 7.96750e-01 715 2013 5 6.42494e+00 1.50743e+00 253 2013 6 1.24316e+01 1.28302e+00 337 2013 7 1.89394e+01 2.83206e+00 1412 2013 8 1.92550e+01 1.29512e+00 1274 2013 9 1.91233e+01 1.46963e+00 895 2013 10 9.28351e+00 2.29374e+00 124 2013 11 5.23815e+00 9.58580e-01 973 2013 12 2.27649e+00 9.96958e-01 228 2014 1 1.31204e+00 4.33499e-01 76 2014 2 4.73722e-01 3.26741e-01 133 2014 3 6.86147e-01 1.84257e-01 218 2014 4 1.30428e+00 5.62099e-01 342 2014 5 5.82727e+00 1.77665e+00 11 2014 6 9.56380e+00 1.63340e+00 46 2014 7 1.37228e+01 1.08911e+00 272 2014 8 1.86374e+01 1.36799e+00 1294 2014 9 1.10303e+01 1.69538e+00 43 2014 10 1.07508e+01 8.40820e-01 618 2014 11 7.35886e+00 1.62463e+00 577 2014 12 3.89670e+00 6.92430e-01 135 2015 1 1.37941e+00 9.01587e-01 169 2015 2 1.60000e-01 5.61249e-02 5 2015 3 1.67269e+00 4.28224e-01 616 2015 4 3.26255e+00 5.34985e-01 198 2015 5 7.38468e+00 7.51909e-01 138 2015 6 1.22796e+01 2.27341e+00 203 2015 7 1.62301e+01 2.70987e+00 373 2015 8 1.97433e+01 1.10419e+00 501 2015 9 1.63096e+01 1.49767e+00 552 2015 10 1.42897e+01 1.80157e+00 1036 2015 11 4.97901e+00 4.41709e-01 477 2015 12 4.37961e+00 4.93812e-01 296 2016 1 2.19600e+00 7.02101e-01 420 2016 2 1.63896e+00 3.33559e-01 280 2016 3 2.23786e+00 7.43531e-01 341 2016 4 3.29213e+00 6.72036e-01 529 2016 5 6.62343e+00 1.71953e+00 223 2016 6 1.52837e+01 2.26468e+00 696 2016 7 1.87166e+01 1.06623e+00 806 2016 8 2.21465e+01 1.42037e+00 2264 2016 9 1.89000e+01 2.08906e+00 1027 2016 10 1.51078e+01 2.36911e+00 827 2016 11 1.00933e+01 2.15908e+00 1133 2016 12 3.65071e+00 8.21941e-01 379 2017 1 2.05502e+00 5.76368e-01 237 2017 2 1.79049e+00 4.46537e-01 288 2017 3 1.86139e+00 4.81562e-01 457 2017 4 3.38131e+00 8.64388e-01 122 2017 5 7.42069e+00 1.66213e+00 483 2017 6 1.11352e+01 1.19308e+00 355 2017 7 1.97681e+01 2.00076e+00 1404 2017 8 2.07342e+01 7.91581e-01 2040 2017 9 1.90288e+01 8.31790e-01 1724 2017 10 1.24991e+01 2.92084e+00 229 2017 11 5.05033e+00 6.55340e-01 579 2017 12 4.12166e+00 1.29781e+00 589 2018 1 1.27578e+00 3.56281e-01 128 2018 2 1.20664e+00 4.67080e-01 345 2018 3 1.31334e+00 7.33300e-01 838 2018 4 1.94253e+00 4.15042e-01 694 2018 5 6.87500e+00 4.27867e-01 10 2018 6 1.43069e+01 2.19020e+00 243 2018 7 1.92756e+01 1.28348e+00 1557 2018 8 2.23821e+01 1.10700e+00 1432 2018 9 1.78879e+01 9.91475e-01 1001 2018 10 1.05565e+01 1.62910e+00 934 2018 11 6.13034e+00 1.29470e+00 294 2018 12 3.15752e+00 7.28831e-01 315 2019 1 2.95706e+00 4.25650e-01 228 2019 2 3.56686e-01 1.65897e-01 169 2019 3 1.29892e+00 5.86564e-01 558 2019 4 2.59821e+00 5.57278e-01 112 2019 5 7.78903e+00 3.55229e+00 88 2019 6 1.15271e+01 1.99680e+00 93 2019 7 1.77760e+01 1.49872e+00 605 2019 8 1.94166e+01 1.02561e+00 1788 2019 9 1.50459e+01 1.07461e+00 611 2019 10 1.10410e+01 3.48871e+00 1170 2019 11 4.96562e+00 7.31590e-01 855 2019 12 3.13681e+00 6.53873e-01 582 2020 1 2.58611e+00 7.28917e-01 835 2020 2 1.47333e+00 6.35860e-01 1258 2020 3 1.84426e+00 5.70482e-01 1151 2020 4 3.65075e+00 6.54600e-01 955 2020 5 8.35178e+00 3.42324e+00 894 2020 6 1.30115e+01 3.16795e+00 1568 2020 7 2.10417e+01 1.33884e+00 2429 2020 8 2.10266e+01 1.18253e+00 1157 2020 9 1.59165e+01 1.10879e+00 1303 2020 10 9.58499e+00 1.06662e+00 1497 2020 11 7.00947e+00 1.41908e+00 2015 2020 12 4.86141e+00 6.50645e-01 733 2021 1 2.27618e+00 8.21994e-01 363 2021 2 1.73664e+00 5.38612e-01 584 2021 3 2.54063e+00 5.52105e-01 2413 2021 4 4.30155e+00 9.54763e-01 1085 2021 5 8.49800e+00 1.54464e+00 1223 2021 6 1.46582e+01 2.27346e+00 1900 2021 7 1.92138e+01 2.33198e+00 2195 2021 8 2.09497e+01 1.30044e+00 2595 2021 9 1.96821e+01 1.81131e+00 2327 2021 10 1.65894e+01 1.23676e+00 1224 2021 11 9.28719e+00 3.95962e+00 1461 2021 12 5.28383e+00 5.14349e-01 546 2022 1 2.45827e+00 1.17271e+00 332 2022 2 7.27298e-01 5.99645e-01 198 2022 3 1.29635e+00 6.02467e-01 868 2022 4 2.88525e+00 6.19734e-01 479 2022 5 7.68463e+00 2.25607e+00 432 2022 6 1.14362e+01 1.94989e+00 827 2022 7 1.76392e+01 2.06584e+00 1843 2022 8 1.97660e+01 1.57714e+00 2142 2022 9 1.92727e+01 1.16692e+00 2128 2022 10 1.47033e+01 2.96460e+00 1673 2022 11 7.14550e+00 2.16896e+00 1293 2022 12 4.50507e+00 8.56957e-01 510 2023 1 2.05917e+00 5.42568e-01 621 2023 2 1.69270e+00 4.47497e-01 1644 2023 3 1.80565e+00 4.20897e-01 1442 2023 4 3.50383e+00 9.99061e-01 1142 2023 5 9.47845e+00 3.24078e+00 621 2023 6 1.60353e+01 1.36694e+00 1247 2023 7 1.91404e+01 1.06104e+00 2363 2023 8 2.03879e+01 1.17488e+00 2516 2023 9 1.90582e+01 8.92242e-01 1595 2023 10 1.65408e+01 2.37362e+00 1623 2023 11 6.89606e+00 2.01762e+00 1748 2023 12 4.23591e+00 6.16100e-01 1028 2024 1 1.51281e+00 1.00177e+00 219 2024 2 2.38011e+00 5.26199e-01 1567 2024 3 3.13373e+00 3.33908e-01 1698 2024 4 2.82647e+00 6.34953e-02 51