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 6.16546e+01 1.04045e-01 257 2002 8 5.81341e+01 1.26472e+00 213 2002 9 5.25317e+01 1.90913e+00 415 2002 10 4.50070e+01 2.69846e+00 731 2002 11 3.79954e+01 1.69183e+00 338 2002 12 3.35281e+01 3.44355e-01 286 2003 1 3.56806e+01 1.73098e+00 704 2003 2 4.22556e+01 2.43799e+00 468 2003 3 5.09998e+01 2.49175e+00 581 2003 4 5.77556e+01 1.41154e+00 432 2003 5 6.13777e+01 6.98174e-01 384 2003 6 6.22397e+01 5.86316e-02 95 2003 7 6.15479e+01 3.37661e-01 292 2003 8 5.82868e+01 4.38337e-01 249 2003 9 5.33909e+01 1.37016e+00 478 2003 10 4.48421e+01 2.02429e+00 685 2003 11 3.56801e+01 9.63593e-01 339 2003 12 3.31294e+01 1.75651e-01 236 2004 1 3.58669e+01 1.49925e+00 448 2004 2 4.32554e+01 2.64533e+00 556 2004 3 5.07212e+01 2.18506e+00 331 2004 4 5.73271e+01 1.20015e+00 555 2004 5 6.19915e+01 2.55030e-01 320 2004 6 6.22574e+01 1.17761e-01 801 2004 7 6.17803e+01 4.89914e-01 558 2004 8 5.77369e+01 1.13520e+00 415 2004 9 5.17468e+01 1.92896e+00 351 2004 10 4.48730e+01 2.64230e+00 665 2004 11 3.75872e+01 1.29118e+00 188 2004 12 3.31153e+01 1.34429e-01 340 2005 1 3.59135e+01 1.52620e+00 635 2005 2 4.30426e+01 1.21449e+00 404 2005 3 5.12148e+01 2.43614e+00 511 2005 4 5.74408e+01 1.31290e+00 424 2005 5 6.19050e+01 4.63612e-01 507 2005 6 6.23048e+01 1.56692e-01 123 2005 7 6.17120e+01 5.02014e-01 397 2005 8 5.87897e+01 1.13476e+00 458 2005 9 5.29753e+01 1.86979e+00 628 2005 10 4.54000e+01 2.16152e+00 343 2005 11 3.74801e+01 2.16008e+00 451 2005 12 3.33419e+01 3.57871e-01 698 2006 1 3.47200e+01 1.45222e+00 497 2006 2 4.30044e+01 2.02707e+00 657 2006 3 5.13019e+01 2.34621e+00 668 2006 4 5.78600e+01 1.51487e+00 630 2006 5 6.14292e+01 5.99198e-01 448 2006 6 6.23771e+01 1.02725e-01 256 2006 7 6.11452e+01 2.93705e-01 273 2006 8 5.80378e+01 1.01057e+00 256 2006 9 5.29647e+01 1.66330e+00 461 2006 10 4.49446e+01 1.78559e+00 520 2006 11 3.65924e+01 1.45761e+00 485 2006 12 3.35259e+01 5.91964e-01 226 2007 1 3.62646e+01 1.91697e+00 437 2007 2 4.35343e+01 1.54365e+00 515 2007 3 5.11778e+01 1.56692e+00 191 2007 4 5.67801e+01 1.09643e+00 512 2007 5 6.12311e+01 6.91883e-01 293 2007 6 6.23577e+01 1.59177e-01 454 2007 7 6.17369e+01 2.60304e-01 322 2007 8 5.87525e+01 1.58650e+00 415 2007 9 5.35436e+01 1.23190e+00 175 2007 10 4.57493e+01 3.06375e+00 148 2007 11 3.73083e+01 1.82472e+00 671 2007 12 3.35424e+01 4.54597e-01 492 2008 1 3.61468e+01 2.19637e+00 378 2008 2 4.26305e+01 2.95868e+00 539 2008 3 5.09923e+01 2.12979e+00 104 2008 4 5.77468e+01 1.68461e+00 366 2008 5 6.13961e+01 4.07363e-01 320 2008 6 6.22727e+01 1.01959e-01 314 2008 7 6.11370e+01 6.10741e-01 399 2008 8 5.90854e+01 1.20167e+00 448 2008 9 5.39682e+01 1.63781e+00 289 2008 10 4.65035e+01 2.43313e+00 443 2008 11 3.67004e+01 2.10944e+00 597 2008 12 3.32841e+01 4.03252e-01 310 2009 1 3.58578e+01 1.70869e+00 612 2009 2 4.28240e+01 2.17389e+00 596 2009 3 4.97718e+01 1.66485e+00 401 2009 4 5.76289e+01 1.28365e+00 283 2009 5 6.09724e+01 3.00705e-01 311 2009 6 6.23340e+01 1.46721e-01 320 2009 7 6.16026e+01 5.51914e-01 204 2009 8 5.86712e+01 1.49229e+00 390 2009 9 5.26040e+01 1.83389e+00 338 2009 10 4.50081e+01 2.93792e+00 799 2009 11 3.71178e+01 1.64687e+00 488 2009 12 3.32276e+01 1.80163e-01 420 2010 1 3.56753e+01 1.23671e+00 350 2010 2 4.42422e+01 2.03616e+00 409 2010 3 5.18965e+01 2.41656e+00 548 2010 4 5.75265e+01 1.71127e+00 416 2010 5 6.12923e+01 6.52196e-01 380 2010 6 6.22779e+01 8.56215e-02 758 2010 7 6.14065e+01 6.11408e-01 453 2010 8 5.87825e+01 1.12262e+00 424 2010 9 5.47992e+01 1.36952e+00 151 2010 10 4.63086e+01 2.65289e+00 667 2010 11 3.81022e+01 1.41691e+00 656 2010 12 3.34255e+01 4.39544e-01 656 2011 1 3.56950e+01 2.05669e+00 449 2011 2 4.39571e+01 2.21157e+00 616 2011 3 5.14804e+01 2.21599e+00 1011 2011 4 5.74769e+01 1.35482e+00 652 2011 5 6.14692e+01 7.12356e-01 527 2011 6 6.23308e+01 1.89709e-01 438 2011 7 6.13496e+01 4.49493e-01 552 2011 8 6.03339e+01 1.69486e-01 130 2011 9 5.25032e+01 1.71504e+00 468 2011 10 4.66585e+01 1.83046e+00 334 2011 11 3.77980e+01 1.88434e+00 515 2011 12 3.33879e+01 5.33568e-01 498 2012 1 3.47899e+01 9.54552e-01 519 2012 2 4.43085e+01 1.61932e+00 711 2012 3 5.15517e+01 2.60270e+00 353 2012 4 5.74835e+01 1.42171e+00 353 2012 5 6.11931e+01 5.15353e-01 220 2012 6 6.22839e+01 1.00669e-01 310 2012 7 6.13030e+01 6.41926e-01 320 2012 8 5.87786e+01 1.12998e+00 441 2012 9 5.34314e+01 2.29087e+00 599 2012 10 4.46855e+01 2.72672e+00 646 2012 11 3.74700e+01 1.87528e+00 820 2012 12 3.32019e+01 2.55558e-01 264 2013 1 3.58778e+01 1.87681e+00 478 2013 2 4.31681e+01 2.40096e+00 603 2013 3 5.11919e+01 2.30117e+00 580 2013 4 5.65665e+01 5.29659e-01 131 2013 5 6.14439e+01 3.77595e-01 448 2013 6 6.21128e+01 1.44893e-01 82 2013 7 6.14654e+01 6.25932e-01 241 2013 8 5.91335e+01 7.84447e-01 256 2013 9 5.24211e+01 1.72444e+00 267 2013 10 4.50387e+01 2.37379e+00 760 2013 11 3.71202e+01 1.95172e+00 252 2013 12 3.34344e+01 3.66160e-01 283 2014 1 3.65745e+01 9.38224e-01 470 2014 2 4.25733e+01 2.08044e+00 833 2014 3 4.98227e+01 1.89120e+00 525 2014 4 5.82131e+01 1.66107e+00 603 2014 5 6.10155e+01 5.12183e-01 320 2014 6 6.22105e+01 1.03295e-01 632 2014 7 6.11475e+01 1.95847e-01 273 2014 8 5.89764e+01 1.07861e+00 568 2014 9 5.32833e+01 2.98245e+00 139 2014 10 4.51600e+01 2.82787e+00 614 2014 11 3.80455e+01 1.79516e+00 593 2014 12 3.33637e+01 2.75807e-01 382 2015 1 3.57238e+01 1.83756e+00 646 2015 2 4.27495e+01 1.93396e+00 523 2015 3 5.10125e+01 2.28649e+00 870 2015 4 5.74851e+01 8.85739e-01 255 2015 5 6.12283e+01 6.37686e-01 546 2015 6 6.21770e+01 8.33454e-02 369 2015 7 6.16919e+01 3.92524e-01 448 2015 8 5.89681e+01 1.26435e+00 510 2015 9 5.44282e+01 1.47671e+00 261 2015 10 4.44547e+01 2.63702e+00 549 2015 11 3.87519e+01 1.14643e+00 396 2015 12 3.30287e+01 1.61715e-01 177 2016 1 3.52720e+01 1.94844e+00 130 2016 2 4.36616e+01 2.74788e+00 540 2016 3 5.04363e+01 2.69645e+00 263 2016 4 5.72845e+01 1.34053e+00 506 2016 5 6.13087e+01 2.52955e-01 256 2016 6 6.20559e+01 1.11346e-01 238 2016 7 6.17283e+01 5.53986e-01 519 2016 8 5.84860e+01 9.49587e-01 344 2016 9 5.23079e+01 1.58822e+00 487 2016 10 4.59404e+01 1.72718e+00 266 2016 11 3.70197e+01 1.21447e+00 361 2016 12 3.32191e+01 3.86758e-01 424 2017 1 3.65150e+01 1.53841e+00 432 2017 2 4.24816e+01 1.90030e+00 493 2017 3 5.10086e+01 2.29921e+00 406 2017 4 5.83511e+01 1.40780e+00 166 2017 5 6.14031e+01 6.50553e-01 638 2017 6 6.21895e+01 2.44123e-01 254 2017 7 6.15210e+01 4.86756e-01 629 2017 8 5.83091e+01 1.08549e+00 376 2017 9 5.34380e+01 1.67608e+00 576 2017 10 4.34066e+01 1.78933e+00 247 2017 11 3.75787e+01 2.01279e+00 658 2017 12 3.31303e+01 2.29708e-01 768 2018 1 3.47395e+01 1.42136e+00 368 2018 2 4.43023e+01 1.67858e+00 667 2018 3 5.07834e+01 2.24337e+00 896 2018 4 5.75542e+01 1.35189e+00 447 2018 5 6.08932e+01 2.58686e-01 190 2018 6 6.22141e+01 1.02743e-01 279 2018 7 6.15735e+01 3.99416e-01 446 2018 8 5.88481e+01 1.27112e+00 398 2018 9 5.25438e+01 1.34274e+00 597 2018 10 4.46247e+01 2.46221e+00 633 2018 11 3.75819e+01 1.75222e+00 428 2018 12 3.31743e+01 3.30887e-01 393 2019 1 3.47282e+01 8.16248e-01 594 2019 2 4.26322e+01 2.75339e+00 664 2019 3 5.19251e+01 2.62953e+00 558 2019 4 5.81200e+01 1.40794e+00 491 2019 5 6.12364e+01 7.24042e-01 307 2019 6 6.22703e+01 1.09255e-01 549 2019 7 6.12741e+01 4.46324e-01 498 2019 8 5.88659e+01 4.92209e-01 345 2019 9 5.32293e+01 1.14607e+00 386 2019 10 4.39214e+01 2.10585e+00 562 2019 11 3.76767e+01 1.94735e+00 804 2019 12 3.34088e+01 5.47340e-01 293 2020 1 3.56144e+01 1.67533e+00 817 2020 2 4.30004e+01 2.71710e+00 403 2020 3 5.25591e+01 2.00889e+00 522 2020 4 5.72047e+01 1.71329e+00 405 2020 5 6.14027e+01 8.12035e-01 395 2020 6 6.22141e+01 7.11190e-02 225 2020 7 6.15994e+01 5.89950e-01 482 2020 8 5.83873e+01 1.21225e+00 704 2020 9 5.27267e+01 1.83039e+00 390 2020 10 4.45804e+01 2.23238e+00 470 2020 11 3.50132e+01 2.85670e-01 150 2020 12 3.32873e+01 3.73682e-01 583 2021 1 3.55996e+01 1.78856e+00 682 2021 2 4.26005e+01 2.84021e+00 503 2021 3 5.19385e+01 2.81898e+00 742 2021 4 5.81045e+01 1.39012e+00 427 2021 5 6.05245e+01 4.49203e-01 206 2021 6 6.22720e+01 9.47715e-02 170 2021 7 6.13405e+01 4.66085e-01 500 2021 8 5.86094e+01 1.24600e+00 514 2021 9 5.23788e+01 1.97701e+00 384 2021 10 4.56944e+01 2.78147e+00 457 2021 11 3.64880e+01 2.03001e+00 565 2021 12 3.33766e+01 5.63351e-01 744 2022 1 3.58766e+01 1.77765e+00 676 2022 2 4.34193e+01 2.70054e+00 428 2022 3 5.08037e+01 1.15018e+00 146 2022 4 5.89270e+01 7.61349e-01 111 2022 5 6.12805e+01 7.29821e-01 564 2022 6 6.22182e+01 1.48613e-01 464 2022 7 6.17470e+01 3.27737e-01 615 2022 8 5.88291e+01 1.41327e+00 544 2022 9 5.31105e+01 1.90019e+00 442 2022 10 4.35652e+01 2.05842e+00 310 2022 11 3.75380e+01 2.18365e+00 678 2022 12 3.31776e+01 3.52469e-01 340 2023 1 3.50750e+01 1.27207e+00 870 2023 2 4.39567e+01 2.47226e+00 929 2023 3 4.97534e+01 2.30767e+00 560 2023 4 5.76057e+01 1.40252e+00 431 2023 5 6.08652e+01 4.07217e-01 400 2023 6 6.22765e+01 1.06063e-01 403 2023 7 6.16708e+01 5.94748e-01 348 2023 8 5.84321e+01 1.29496e+00 440 2023 9 5.38487e+01 1.78533e+00 443 2023 10 4.50106e+01 2.63650e+00 411 2023 11 3.58133e+01 1.75046e+00 232 2023 12 3.31794e+01 3.78270e-01 256 2024 1 3.59494e+01 1.98339e+00 301 2024 2 4.34440e+01 2.49771e+00 423 2024 3 5.25822e+01 1.62145e+00 384 2024 4 5.56192e+01 1.18823e-02 64