YEAR MONTH MEAN STDEV COUNT 2002 1 nan nan 0 2002 2 nan nan 0 2002 3 nan nan 0 2002 4 nan nan 0 2002 5 nan nan 0 2002 6 nan nan 0 2002 7 6.15998e+01 2.12016e-01 369 2002 8 5.82498e+01 6.11618e-01 240 2002 9 5.11101e+01 1.36809e+00 90 2002 10 4.53756e+01 1.80392e+00 421 2002 11 3.88405e+01 2.24831e+00 327 2002 12 3.43078e+01 3.08244e-01 537 2003 1 3.67423e+01 1.41569e+00 319 2003 2 4.25512e+01 1.51198e+00 278 2003 3 5.10940e+01 2.52245e+00 360 2003 4 5.76896e+01 1.11314e+00 482 2003 5 6.09156e+01 3.77446e-01 314 2003 6 6.17927e+01 1.37644e-01 144 2003 7 6.12711e+01 4.35427e-01 164 2003 8 5.96957e+01 6.76856e-01 154 2003 9 5.48867e+01 1.15333e+00 230 2003 10 4.34533e+01 1.99955e+00 152 2003 11 3.87808e+01 1.27856e+00 118 2003 12 3.44347e+01 1.21301e-01 99 2004 1 3.65966e+01 1.18345e+00 469 2004 2 4.33421e+01 2.66249e+00 441 2004 3 5.24117e+01 2.44640e+00 727 2004 4 5.75449e+01 1.31947e+00 296 2004 5 6.16685e+01 4.88257e-01 366 2004 6 6.19740e+01 1.82480e-01 217 2004 7 6.16354e+01 3.74492e-01 106 2004 8 5.86926e+01 5.16690e-01 27 2004 9 5.15807e+01 1.51393e+00 371 2004 10 4.42787e+01 1.80245e+00 546 2004 11 3.80588e+01 2.19791e+00 617 2004 12 3.46896e+01 4.74970e-01 480 2005 1 3.56621e+01 1.56161e+00 435 2005 2 4.29475e+01 1.74016e+00 439 2005 3 5.30198e+01 2.28295e+00 350 2005 4 5.75132e+01 2.02023e+00 267 2005 5 6.14350e+01 6.72293e-01 449 2005 6 6.19720e+01 2.66957e-01 162 2005 7 6.13138e+01 1.18032e+00 211 2005 8 5.98182e+01 1.01786e+00 117 2005 9 5.20624e+01 2.04813e+00 150 2005 10 4.49478e+01 3.50662e+00 139 2005 11 3.81005e+01 2.23964e+00 366 2005 12 3.45787e+01 3.90523e-01 658 2006 1 3.58699e+01 1.82684e+00 277 2006 2 4.46529e+01 2.32573e+00 196 2006 3 5.18229e+01 1.85797e+00 617 2006 4 5.81315e+01 1.34034e+00 560 2006 5 6.04474e+01 8.22502e-01 214 2006 6 6.18191e+01 4.40132e-01 127 2006 7 6.14879e+01 4.51071e-01 90 2006 8 5.92783e+01 1.04638e+00 322 2006 9 5.22400e+01 1.74823e+00 191 2006 10 4.60746e+01 2.14869e+00 269 2006 11 3.71271e+01 1.59428e+00 685 2006 12 3.43414e+01 3.20997e-01 412 2007 1 3.61725e+01 1.67145e+00 763 2007 2 4.45894e+01 2.88877e+00 385 2007 3 5.15500e+01 2.16177e+00 755 2007 4 5.87422e+01 1.30378e+00 350 2007 5 6.07052e+01 7.23067e-01 386 2007 6 6.14433e+01 6.89467e-01 215 2007 7 6.17878e+01 2.97296e-01 243 2007 8 5.90178e+01 1.32544e+00 182 2007 9 5.37305e+01 1.98427e+00 206 2007 10 4.40910e+01 2.58938e+00 141 2007 11 3.80690e+01 1.30920e+00 359 2007 12 3.44141e+01 4.09962e-01 624 2008 1 3.66281e+01 1.63121e+00 700 2008 2 4.22628e+01 1.67904e+00 405 2008 3 5.17476e+01 2.67453e+00 445 2008 4 5.78185e+01 1.47964e+00 636 2008 5 6.13274e+01 4.28425e-01 482 2008 6 6.19625e+01 3.36195e-01 259 2008 7 6.14815e+01 5.43779e-01 344 2008 8 5.97849e+01 7.51774e-01 195 2008 9 5.33314e+01 2.01702e+00 208 2008 10 4.56832e+01 1.92617e+00 438 2008 11 3.76770e+01 1.87207e+00 446 2008 12 3.45612e+01 3.15148e-01 500 2009 1 3.52915e+01 1.20021e+00 168 2009 2 4.49845e+01 1.89936e+00 614 2009 3 5.10367e+01 1.97095e+00 527 2009 4 5.75604e+01 1.54708e+00 443 2009 5 6.13169e+01 5.73470e-01 479 2009 6 6.17765e+01 3.32233e-01 212 2009 7 6.13512e+01 2.80805e-01 143 2009 8 5.95543e+01 1.04145e+00 146 2009 9 5.25295e+01 1.66403e+00 563 2009 10 4.56950e+01 2.79031e+00 594 2009 11 3.72540e+01 1.92949e+00 204 2009 12 3.46561e+01 3.13558e-01 188 2010 1 3.73873e+01 1.43418e+00 263 2010 2 4.34921e+01 2.23949e+00 90 2010 3 5.29085e+01 1.68870e+00 186 2010 4 5.79276e+01 1.40713e+00 679 2010 5 6.02476e+01 7.67003e-01 291 2010 6 6.18344e+01 1.81897e-01 109 2010 7 6.17566e+01 2.85886e-01 109 2010 8 5.89906e+01 7.02960e-01 312 2010 9 5.54183e+01 1.50603e+00 152 2010 10 4.55746e+01 1.82534e+00 195 2010 11 3.82622e+01 1.80050e+00 749 2010 12 3.46101e+01 4.10463e-01 280 2011 1 3.59824e+01 1.20132e+00 136 2011 2 4.18613e+01 2.57326e+00 166 2011 3 5.41337e+01 8.17048e-01 315 2011 4 5.76858e+01 1.58723e+00 626 2011 5 6.08814e+01 4.67789e-01 410 2011 6 6.19995e+01 8.04371e-02 147 2011 7 6.15124e+01 2.33709e-01 96 2011 8 5.92612e+01 5.61392e-01 138 2011 9 5.38276e+01 1.26306e+00 283 2011 10 4.64874e+01 1.47373e+00 23 2011 11 3.84478e+01 1.99891e+00 581 2011 12 3.44817e+01 4.54491e-01 392 2012 1 3.64643e+01 1.42180e+00 505 2012 2 4.27446e+01 2.51893e+00 272 2012 3 5.16703e+01 2.54903e+00 357 2012 4 5.79150e+01 1.28514e+00 263 2012 5 6.07775e+01 4.48442e-01 134 2012 6 6.11324e+01 3.20626e-01 145 2012 7 6.03783e+01 9.77597e-01 55 2012 8 5.95407e+01 7.66812e-01 196 2012 9 5.56766e+01 5.16977e-01 163 2012 10 4.55415e+01 1.81160e+00 235 2012 11 3.82133e+01 1.81817e+00 415 2012 12 3.46615e+01 4.82887e-01 329 2013 1 3.70680e+01 1.75383e+00 556 2013 2 4.39755e+01 2.32928e+00 478 2013 3 5.22995e+01 2.46236e+00 409 2013 4 5.81105e+01 1.02621e+00 364 2013 5 6.16957e+01 4.30026e-01 349 2013 6 6.20101e+01 6.85896e-02 170 2013 7 6.07670e+01 2.51330e-01 89 2013 8 5.86858e+01 9.32230e-01 195 2013 9 5.37268e+01 2.16004e+00 227 2013 10 4.53446e+01 2.08497e+00 455 2013 11 3.83705e+01 1.95039e+00 399 2013 12 3.44042e+01 4.99669e-01 378 2014 1 3.61891e+01 1.61357e+00 488 2014 2 4.26969e+01 2.09886e+00 418 2014 3 5.09815e+01 1.92517e+00 166 2014 4 5.87366e+01 9.64529e-01 275 2014 5 6.12124e+01 5.28552e-01 460 2014 6 6.18795e+01 1.58407e-01 277 2014 7 6.17810e+01 3.49952e-01 235 2014 8 5.95404e+01 8.59255e-01 130 2014 9 5.22259e+01 1.70274e+00 121 2014 10 4.69957e+01 1.68069e+00 246 2014 11 3.79837e+01 1.64024e+00 708 2014 12 3.44246e+01 2.71986e-01 327 2015 1 3.68741e+01 1.72639e+00 313 2015 2 4.39577e+01 2.09135e+00 306 2015 3 4.98336e+01 1.50376e+00 645 2015 4 5.74502e+01 1.32068e+00 437 2015 5 6.13234e+01 5.44685e-01 438 2015 6 6.19692e+01 1.04589e-01 325 2015 7 6.17200e+01 2.40216e-01 114 2015 8 5.91635e+01 6.81200e-01 104 2015 9 5.39757e+01 2.96640e+00 83 2015 10 4.63176e+01 1.93258e+00 286 2015 11 3.70300e+01 1.86386e+00 297 2015 12 3.45203e+01 4.79788e-01 208 2016 1 3.47886e+01 4.46934e-02 64 2016 2 4.40110e+01 2.29203e+00 447 2016 3 5.22721e+01 2.06865e+00 294 2016 4 5.85882e+01 1.73238e+00 237 2016 5 6.10947e+01 7.30086e-01 429 2016 6 6.17037e+01 4.95220e-01 81 2016 7 6.13907e+01 4.45495e-01 167 2016 8 5.95730e+01 5.36713e-01 166 2016 9 5.20504e+01 1.56882e+00 258 2016 10 4.54876e+01 1.59671e+00 147 2016 11 3.88768e+01 1.60191e+00 472 2016 12 3.45061e+01 4.36083e-01 270 2017 1 3.65208e+01 1.04026e+00 385 2017 2 4.40946e+01 2.67019e+00 367 2017 3 5.20824e+01 2.45615e+00 521 2017 4 5.75173e+01 1.52237e+00 423 2017 5 6.13363e+01 6.44035e-01 527 2017 6 6.19322e+01 9.78201e-02 302 2017 7 6.18018e+01 2.47797e-01 95 2017 8 5.83831e+01 1.10109e+00 314 2017 9 5.33473e+01 2.21376e+00 225 2017 10 4.51636e+01 1.96857e+00 127 2017 11 3.69852e+01 1.04685e+00 799 2017 12 3.42012e+01 2.90738e-01 364 2018 1 3.58079e+01 7.74250e-01 62 2018 2 4.51555e+01 2.25396e+00 342 2018 3 5.11544e+01 2.29469e+00 735 2018 4 5.81671e+01 1.24487e+00 352 2018 5 6.07732e+01 2.28066e-02 40 2018 6 6.20081e+01 1.95589e-01 184 2018 7 6.15323e+01 3.90318e-01 304 2018 8 5.96694e+01 1.03798e+00 90 2018 9 5.28640e+01 1.84275e+00 147 2018 10 4.66582e+01 2.92010e+00 144 2018 11 3.74827e+01 8.48277e-01 194 2018 12 3.45883e+01 3.46803e-01 556 2019 1 3.59067e+01 1.02544e+00 371 2019 2 4.42480e+01 2.00732e+00 726 2019 3 5.15387e+01 2.37418e+00 594 2019 4 5.78311e+01 1.46687e+00 375 2019 5 6.15634e+01 4.54917e-01 387 2019 6 6.19610e+01 3.16191e-01 568 2019 7 6.11981e+01 2.96313e-01 451 2019 8 5.94142e+01 1.29151e+00 197 2019 9 5.24478e+01 2.27229e+00 297 2019 10 4.40331e+01 1.57178e+00 722 2019 11 3.82408e+01 2.24265e+00 652 2019 12 3.45680e+01 5.32385e-01 405 2020 1 3.67882e+01 1.91148e+00 194 2020 2 4.34143e+01 2.70055e+00 148 2020 3 5.25356e+01 2.19620e+00 570 2020 4 5.71234e+01 1.41145e+00 142 2020 5 6.11751e+01 2.54147e-01 236 2020 6 6.17441e+01 5.57544e-01 288 2020 7 6.10361e+01 6.96372e-01 229 2020 8 5.89010e+01 1.29590e+00 260 2020 9 5.43258e+01 1.81019e+00 416 2020 10 4.40005e+01 4.07307e+00 229 2020 11 3.67978e+01 8.68291e-01 360 2020 12 3.43737e+01 4.24005e-01 415 2021 1 3.57759e+01 1.40170e+00 233 2021 2 4.60000e+01 1.29918e+00 349 2021 3 5.04110e+01 2.19605e+00 542 2021 4 5.82491e+01 1.55182e+00 645 2021 5 6.17607e+01 5.81796e-01 197 2021 6 6.19560e+01 1.21854e-01 160 2021 7 6.14148e+01 5.26043e-01 406 2021 8 5.86757e+01 5.15445e-01 69 2021 9 5.22499e+01 2.08029e+00 266 2021 10 4.74874e+01 1.12134e+00 111 2021 11 3.64304e+01 1.07538e+00 344 2021 12 3.44964e+01 3.74209e-01 788 2022 1 3.59223e+01 1.85224e+00 430 2022 2 4.44942e+01 2.45831e+00 513 2022 3 5.14024e+01 2.30276e+00 504 2022 4 5.97122e+01 3.09288e-01 103 2022 5 6.09879e+01 4.79340e-01 169 2022 6 6.19014e+01 1.40836e-02 16 2022 7 6.18441e+01 2.05834e-01 211 2022 8 5.87752e+01 1.14613e+00 330 2022 9 5.35753e+01 1.32534e+00 212 2022 10 4.59284e+01 2.95462e+00 217 2022 11 3.77081e+01 1.61832e+00 560 2022 12 3.44431e+01 2.72515e-01 563 2023 1 3.68514e+01 1.71334e+00 392 2023 2 4.40501e+01 2.47703e+00 900 2023 3 5.22883e+01 2.01820e+00 742 2023 4 5.73308e+01 1.27445e+00 225 2023 5 6.08415e+01 5.26882e-01 262 2023 6 6.18290e+01 1.30588e-01 155 2023 7 6.16019e+01 6.56946e-01 357 2023 8 6.05162e+01 5.26594e-01 127 2023 9 5.51930e+01 8.92396e-01 70 2023 10 4.45419e+01 1.61473e+00 305 2023 11 3.82085e+01 1.36483e+00 348 2023 12 3.43948e+01 3.84255e-01 361 2024 1 3.66009e+01 1.57794e+00 400 2024 2 4.41278e+01 1.74385e+00 237 2024 3 5.32235e+01 1.75061e+00 472 2024 4 5.61039e+01 2.86656e-02 64