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 5.82132e+01 1.01985e-01 254 2002 8 5.86055e+01 6.45437e-01 256 2002 9 5.58982e+01 1.34743e+00 320 2002 10 4.89557e+01 1.90441e+00 373 2002 11 4.31385e+01 1.43183e+00 840 2002 12 4.02315e+01 2.50793e-01 699 2003 1 4.25199e+01 1.28203e+00 951 2003 2 4.80606e+01 2.01705e+00 484 2003 3 5.44357e+01 1.73067e+00 919 2003 4 5.87028e+01 5.94437e-01 175 2003 5 5.95732e+01 1.62910e-01 256 2003 6 5.95292e+01 4.21439e-03 50 2003 7 5.85784e+01 6.72393e-01 192 2003 8 5.84393e+01 5.56368e-01 154 2003 9 5.52162e+01 1.49785e+00 291 2003 10 5.02197e+01 1.71163e+00 588 2003 11 4.24034e+01 1.12773e+00 208 2003 12 4.01661e+01 3.13943e-01 500 2004 1 4.23929e+01 1.39681e+00 882 2004 2 4.76269e+01 1.90378e+00 660 2004 3 5.50074e+01 1.57189e+00 484 2004 4 5.88337e+01 7.72163e-01 747 2004 5 6.00038e+01 4.61691e-02 65 2004 6 5.94121e+01 7.06571e-02 185 2004 7 5.78660e+01 1.77422e-01 78 2004 8 5.82872e+01 6.96331e-01 220 2004 9 5.38636e+01 4.14848e-01 192 2004 10 5.01629e+01 1.64990e+00 359 2004 11 4.36138e+01 1.65379e+00 503 2004 12 4.01155e+01 2.72192e-01 591 2005 1 4.25661e+01 1.42403e+00 551 2005 2 4.83143e+01 1.72652e+00 695 2005 3 5.44589e+01 1.45416e+00 831 2005 4 5.86529e+01 7.13226e-01 423 2005 5 5.96487e+01 3.06876e-01 244 2005 6 5.95463e+01 4.96511e-03 64 2005 7 5.82405e+01 9.70670e-02 192 2005 8 5.88458e+01 2.97628e-01 186 2005 9 5.51972e+01 1.24641e+00 460 2005 10 5.03731e+01 2.37195e+00 90 2005 11 4.36809e+01 1.43581e+00 556 2005 12 4.04428e+01 3.80489e-01 654 2006 1 4.23923e+01 1.36067e+00 669 2006 2 4.84316e+01 1.82678e+00 905 2006 3 5.49233e+01 1.72476e+00 522 2006 4 5.88706e+01 7.77490e-01 415 2006 5 5.96656e+01 1.37861e-01 428 2006 6 5.95516e+01 1.44812e-01 128 2006 7 5.84026e+01 5.03285e-01 291 2006 8 5.81060e+01 6.43835e-01 244 2006 9 5.46016e+01 9.33769e-01 447 2006 10 4.88932e+01 1.98020e+00 436 2006 11 4.40179e+01 1.60840e+00 512 2006 12 4.01762e+01 3.17743e-01 537 2007 1 4.21809e+01 1.62492e+00 841 2007 2 4.87082e+01 2.00951e+00 854 2007 3 5.41212e+01 1.62935e+00 378 2007 4 5.88386e+01 6.87808e-01 400 2007 5 5.95133e+01 2.12145e-01 152 2007 6 5.93797e+01 5.66579e-02 127 2007 7 5.81585e+01 2.19701e-01 192 2007 8 5.85569e+01 4.08599e-01 128 2007 9 5.51653e+01 1.26663e+00 200 2007 10 4.99328e+01 1.44933e+00 396 2007 11 4.34245e+01 1.44445e+00 351 2007 12 4.02340e+01 2.78627e-01 563 2008 1 4.23006e+01 1.39568e+00 946 2008 2 4.80314e+01 1.52653e+00 612 2008 3 5.43831e+01 1.78754e+00 527 2008 4 5.90447e+01 3.26218e-01 306 2008 5 5.96048e+01 1.71889e-01 436 2008 6 5.95291e+01 3.46753e-02 192 2008 7 5.81043e+01 1.57385e-01 193 2008 8 5.84145e+01 4.27083e-01 215 2008 9 5.59474e+01 8.13728e-01 250 2008 10 5.00000e+01 2.43928e+00 452 2008 11 4.40241e+01 1.33883e+00 653 2008 12 4.01572e+01 1.55781e-01 532 2009 1 4.24346e+01 1.56719e+00 745 2009 2 4.86241e+01 1.80104e+00 562 2009 3 5.60160e+01 1.21138e+00 383 2009 4 5.85480e+01 7.43047e-01 554 2009 5 5.96023e+01 2.86815e-01 316 2009 6 5.95593e+01 5.08258e-02 80 2009 7 5.87179e+01 6.19600e-01 366 2009 8 5.84452e+01 6.30923e-01 284 2009 9 5.48482e+01 1.11699e+00 439 2009 10 4.89160e+01 1.77583e+00 573 2009 11 4.35627e+01 1.42650e+00 559 2009 12 4.02383e+01 3.53539e-01 635 2010 1 4.23776e+01 1.44450e+00 582 2010 2 4.74684e+01 1.50618e+00 529 2010 3 5.55884e+01 1.62943e+00 544 2010 4 5.79708e+01 5.45206e-01 257 2010 5 5.95369e+01 2.12854e-01 212 2010 6 5.93627e+01 8.21499e-02 188 2010 7 5.78869e+01 2.84107e-03 26 2010 8 5.82452e+01 4.58365e-01 288 2010 9 5.56377e+01 1.04028e+00 275 2010 10 4.85477e+01 9.69370e-01 459 2010 11 4.25935e+01 7.32556e-01 464 2010 12 4.05874e+01 4.69080e-01 518 2011 1 4.27702e+01 1.25229e+00 805 2011 2 4.79106e+01 1.92577e+00 596 2011 3 5.52377e+01 1.38488e+00 451 2011 4 5.85465e+01 7.20440e-01 522 2011 5 5.95256e+01 1.56844e-01 135 2011 6 5.93651e+01 3.20023e-03 64 2011 7 5.79765e+01 1.48756e-01 126 2011 8 5.89748e+01 9.09935e-02 187 2011 9 5.49710e+01 1.66317e+00 320 2011 10 5.03258e+01 1.78194e+00 360 2011 11 4.31196e+01 1.20250e+00 528 2011 12 4.02419e+01 2.52141e-01 534 2012 1 4.22243e+01 1.33344e+00 826 2012 2 4.83918e+01 2.12347e+00 789 2012 3 5.34563e+01 1.01619e+00 253 2012 4 5.85807e+01 4.71685e-01 270 2012 5 5.95983e+01 2.57069e-01 156 2012 6 5.94518e+01 1.10480e-01 192 2012 7 5.80638e+01 7.22545e-02 128 2012 8 5.83963e+01 5.82358e-01 275 2012 9 5.51071e+01 1.37190e+00 318 2012 10 4.98938e+01 2.22318e+00 374 2012 11 4.38093e+01 1.45330e+00 670 2012 12 4.02875e+01 2.71156e-01 688 2013 1 4.19505e+01 9.86272e-01 667 2013 2 4.85502e+01 2.04008e+00 824 2013 3 5.45510e+01 1.48887e+00 512 2013 4 5.88063e+01 6.34823e-01 372 2013 5 5.96740e+01 1.05718e-01 256 2013 6 nan nan 0 2013 7 5.82429e+01 1.62522e-01 351 2013 8 5.84474e+01 6.87555e-01 279 2013 9 5.45764e+01 6.98745e-01 335 2013 10 5.08952e+01 1.37193e+00 352 2013 11 4.40026e+01 1.08026e+00 531 2013 12 4.01466e+01 2.04818e-01 422 2014 1 4.23283e+01 1.51352e+00 581 2014 2 4.85119e+01 1.67156e+00 743 2014 3 5.53620e+01 1.18898e+00 518 2014 4 5.89157e+01 8.42518e-01 435 2014 5 5.94793e+01 1.64034e-01 317 2014 6 5.94702e+01 1.85911e-01 256 2014 7 5.81450e+01 2.64430e-01 128 2014 8 5.84964e+01 5.48069e-01 192 2014 9 5.50258e+01 1.36679e+00 250 2014 10 4.84751e+01 1.73622e+00 566 2014 11 4.32322e+01 1.47254e+00 597 2014 12 4.02528e+01 3.07909e-01 777 2015 1 4.26436e+01 1.57533e+00 795 2015 2 4.84725e+01 1.90078e+00 568 2015 3 5.48485e+01 1.55407e+00 698 2015 4 5.87735e+01 6.34491e-01 352 2015 5 5.98057e+01 3.14133e-01 192 2015 6 5.95339e+01 4.67563e-03 64 2015 7 5.79736e+01 3.49697e-03 64 2015 8 5.89572e+01 2.87671e-01 390 2015 9 5.54405e+01 1.73089e+00 335 2015 10 4.87288e+01 1.28178e+00 640 2015 11 4.30228e+01 1.32345e+00 400 2015 12 4.01715e+01 2.19446e-01 570 2016 1 4.23024e+01 1.28913e+00 692 2016 2 4.78987e+01 2.45446e+00 661 2016 3 5.43108e+01 1.30566e+00 354 2016 4 5.86043e+01 5.53384e-01 445 2016 5 5.94695e+01 1.12103e-01 153 2016 6 5.94804e+01 1.22916e-01 256 2016 7 5.82318e+01 6.38475e-02 192 2016 8 5.87260e+01 3.74849e-01 390 2016 9 5.49934e+01 9.00854e-01 488 2016 10 4.85094e+01 1.32373e+00 224 2016 11 4.33646e+01 1.70384e+00 359 2016 12 4.03390e+01 2.66862e-01 588 2017 1 4.24489e+01 1.22762e+00 624 2017 2 4.82598e+01 1.67113e+00 725 2017 3 5.42318e+01 1.38867e+00 390 2017 4 5.84331e+01 8.40089e-01 395 2017 5 5.94282e+01 1.37570e-01 288 2017 6 5.94634e+01 9.96577e-02 323 2017 7 5.80908e+01 2.85667e-01 222 2017 8 5.86029e+01 5.80619e-01 192 2017 9 5.62750e+01 1.23059e+00 177 2017 10 4.87071e+01 2.09892e+00 350 2017 11 4.28453e+01 1.52945e+00 448 2017 12 4.02238e+01 3.05284e-01 592 2018 1 4.28613e+01 1.42455e+00 788 2018 2 4.88272e+01 1.88976e+00 553 2018 3 5.45785e+01 1.84673e+00 594 2018 4 5.85889e+01 6.85572e-01 490 2018 5 5.96643e+01 2.00252e-01 327 2018 6 5.94764e+01 1.61587e-01 243 2018 7 5.81460e+01 1.13471e-01 128 2018 8 5.83591e+01 4.23816e-01 372 2018 9 5.54458e+01 1.01280e+00 285 2018 10 4.83028e+01 1.28701e+00 626 2018 11 4.32098e+01 1.47817e+00 746 2018 12 4.02659e+01 2.23235e-01 437 2019 1 4.22602e+01 1.00009e+00 617 2019 2 4.79581e+01 2.34241e+00 499 2019 3 5.46374e+01 1.67479e+00 789 2019 4 5.93604e+01 3.54590e-01 451 2019 5 5.94985e+01 5.92176e-02 70 2019 6 5.95170e+01 1.62334e-01 243 2019 7 5.82104e+01 1.04617e-01 256 2019 8 5.85568e+01 6.25753e-01 459 2019 9 5.55468e+01 1.15918e+00 248 2019 10 5.04584e+01 2.24916e+00 441 2019 11 4.37809e+01 1.54822e+00 950 2019 12 4.03730e+01 3.76585e-01 704 2020 1 4.24573e+01 1.53360e+00 488 2020 2 4.83506e+01 2.55017e+00 443 2020 3 5.43930e+01 2.16348e+00 342 2020 4 5.88349e+01 7.69659e-01 950 2020 5 5.95214e+01 1.06133e-01 193 2020 6 5.94429e+01 1.20517e-01 523 2020 7 5.84116e+01 4.63188e-01 300 2020 8 5.85680e+01 4.66512e-01 174 2020 9 5.56278e+01 1.22107e+00 320 2020 10 4.91138e+01 1.49925e+00 302 2020 11 4.31516e+01 1.51194e+00 502 2020 12 4.03000e+01 3.84664e-01 952 2021 1 4.24214e+01 1.13795e+00 750 2021 2 4.89856e+01 1.96151e+00 618 2021 3 5.43582e+01 1.66153e+00 817 2021 4 5.90868e+01 6.06132e-01 514 2021 5 5.96263e+01 2.11032e-01 131 2021 6 5.93237e+01 3.79020e-02 36 2021 7 5.85637e+01 6.38916e-01 128 2021 8 5.85866e+01 5.75875e-01 245 2021 9 5.46568e+01 1.53070e+00 359 2021 10 4.86454e+01 1.85264e+00 552 2021 11 4.34666e+01 1.49165e+00 879 2021 12 4.03668e+01 4.19076e-01 1014 2022 1 4.27133e+01 1.40643e+00 869 2022 2 4.84026e+01 2.25176e+00 572 2022 3 5.40729e+01 1.51040e+00 472 2022 4 5.96838e+01 6.95128e-03 63 2022 5 5.97621e+01 3.02788e-01 160 2022 6 5.94538e+01 1.66263e-01 375 2022 7 5.82005e+01 1.75379e-01 254 2022 8 5.81008e+01 4.73196e-01 213 2022 9 5.49764e+01 1.43396e+00 193 2022 10 4.96438e+01 1.91180e+00 430 2022 11 4.29833e+01 1.32938e+00 708 2022 12 4.02018e+01 2.20864e-01 818 2023 1 4.25572e+01 1.33880e+00 710 2023 2 4.80055e+01 1.79814e+00 504 2023 3 5.46217e+01 1.89927e+00 929 2023 4 5.89879e+01 7.18748e-01 606 2023 5 5.95637e+01 2.02376e-01 502 2023 6 5.94957e+01 8.67221e-02 248 2023 7 nan nan 0 2023 8 5.79144e+01 7.03804e-01 393 2023 9 5.51965e+01 9.65357e-01 478 2023 10 5.00207e+01 1.13585e+00 469 2023 11 4.28705e+01 1.37580e+00 559 2023 12 4.02631e+01 4.08217e-01 767 2024 1 4.23750e+01 1.42210e+00 544 2024 2 4.90527e+01 1.30674e+00 692 2024 3 5.43924e+01 1.71865e+00 500 2024 4 5.77055e+01 4.47563e-03 64