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 6.16444e+01 2.49284e-01 320 2002 8 5.79029e+01 7.57161e-01 270 2002 9 5.17126e+01 1.72081e+00 120 2002 10 4.60462e+01 1.75957e+00 403 2002 11 4.07644e+01 4.42015e-01 240 2002 12 3.39553e+01 3.86385e-01 270 2003 1 3.67476e+01 8.80574e-01 315 2003 2 4.37711e+01 1.85155e+00 939 2003 3 5.05470e+01 2.27836e+00 908 2003 4 5.76897e+01 1.36433e+00 551 2003 5 6.14062e+01 6.22715e-01 470 2003 6 6.20688e+01 8.26168e-02 209 2003 7 6.14453e+01 5.39350e-01 463 2003 8 6.02639e+01 4.99972e-01 71 2003 9 5.26335e+01 1.64337e+00 269 2003 10 4.46970e+01 1.88752e+00 671 2003 11 3.83267e+01 1.41053e+00 771 2003 12 3.39332e+01 1.20431e-01 192 2004 1 3.60957e+01 1.55110e+00 651 2004 2 4.27766e+01 2.38601e+00 960 2004 3 5.22987e+01 2.12903e+00 967 2004 4 5.82833e+01 1.37638e+00 714 2004 5 6.16446e+01 5.80108e-01 631 2004 6 6.21843e+01 1.28718e-01 643 2004 7 6.16559e+01 3.75257e-01 389 2004 8 5.79654e+01 7.58799e-01 371 2004 9 5.24545e+01 2.08248e+00 400 2004 10 4.45784e+01 2.67072e+00 803 2004 11 3.75633e+01 1.86850e+00 907 2004 12 3.41893e+01 5.24720e-01 385 2005 1 3.54823e+01 1.30008e+00 450 2005 2 4.33369e+01 2.30451e+00 782 2005 3 5.16712e+01 2.63861e+00 602 2005 4 5.81666e+01 1.47323e+00 560 2005 5 6.16380e+01 5.54672e-01 660 2005 6 6.21570e+01 8.11917e-02 320 2005 7 6.08774e+01 1.12191e+00 427 2005 8 5.87286e+01 1.51427e+00 704 2005 9 5.41096e+01 1.06205e+00 417 2005 10 4.65721e+01 1.36880e+00 266 2005 11 3.71928e+01 6.20700e-01 128 2005 12 3.39878e+01 3.79051e-01 191 2006 1 3.78234e+01 1.69193e+00 461 2006 2 4.52518e+01 1.32902e+00 715 2006 3 5.12158e+01 2.29966e+00 960 2006 4 5.78024e+01 1.59780e+00 865 2006 5 6.15271e+01 5.75759e-01 377 2006 6 6.22053e+01 1.57133e-01 719 2006 7 6.15081e+01 3.42837e-01 355 2006 8 5.89694e+01 1.06786e+00 541 2006 9 5.27047e+01 1.49598e+00 467 2006 10 4.52896e+01 2.01243e+00 551 2006 11 3.71774e+01 2.02825e+00 254 2006 12 3.39619e+01 7.22076e-01 281 2007 1 3.50599e+01 1.07908e+00 528 2007 2 4.16765e+01 1.57128e+00 209 2007 3 5.17011e+01 2.28253e+00 863 2007 4 5.87318e+01 1.51522e+00 512 2007 5 6.12795e+01 4.39448e-01 586 2007 6 6.23053e+01 1.50553e-01 351 2007 7 6.17779e+01 2.66664e-01 608 2007 8 5.90907e+01 1.28939e+00 543 2007 9 5.31369e+01 1.90211e+00 322 2007 10 4.63327e+01 2.35808e+00 454 2007 11 3.74878e+01 1.68049e+00 542 2007 12 3.42468e+01 4.83340e-01 543 2008 1 3.67341e+01 1.56020e+00 242 2008 2 4.21370e+01 2.10187e+00 792 2008 3 5.09079e+01 2.59360e+00 576 2008 4 5.80800e+01 1.54905e+00 764 2008 5 6.10529e+01 4.12366e-01 322 2008 6 6.22343e+01 8.24886e-02 346 2008 7 6.13246e+01 5.97619e-01 263 2008 8 5.87480e+01 1.14075e+00 311 2008 9 5.39785e+01 1.77404e+00 304 2008 10 4.69913e+01 1.94434e+00 384 2008 11 3.73739e+01 1.96110e+00 533 2008 12 3.39458e+01 2.96509e-01 295 2009 1 3.66985e+01 1.73433e+00 512 2009 2 4.42306e+01 2.33768e+00 838 2009 3 5.21095e+01 1.40248e+00 656 2009 4 5.84943e+01 1.55207e+00 503 2009 5 6.12220e+01 4.68533e-01 374 2009 6 6.22097e+01 1.90576e-01 362 2009 7 6.15463e+01 3.65671e-01 395 2009 8 5.97036e+01 8.60561e-01 164 2009 9 5.33018e+01 1.99048e+00 486 2009 10 4.62261e+01 2.77248e+00 656 2009 11 3.59770e+01 1.41389e+00 205 2009 12 3.40843e+01 3.97642e-01 384 2010 1 3.80537e+01 4.86083e-01 168 2010 2 4.20916e+01 1.91664e+00 277 2010 3 5.33021e+01 1.30444e+00 353 2010 4 5.77900e+01 1.19722e+00 566 2010 5 6.15609e+01 6.25404e-01 587 2010 6 6.21568e+01 1.17101e-01 743 2010 7 6.14995e+01 4.38515e-01 342 2010 8 5.94924e+01 1.00212e+00 288 2010 9 5.44780e+01 1.13522e+00 377 2010 10 4.45965e+01 2.60942e+00 813 2010 11 3.91180e+01 1.55940e+00 303 2010 12 3.26156e+01 1.32693e+00 117 2011 1 3.54393e+01 2.77117e+00 182 2011 2 4.43374e+01 2.58805e+00 935 2011 3 5.13437e+01 2.38131e+00 803 2011 4 5.80596e+01 1.39184e+00 842 2011 5 6.13847e+01 6.22633e-01 649 2011 6 6.21781e+01 1.10078e-01 400 2011 7 6.11953e+01 4.41666e-01 512 2011 8 5.96911e+01 8.81311e-01 420 2011 9 5.34804e+01 1.42394e+00 505 2011 10 4.71136e+01 2.39030e+00 206 2011 11 3.79679e+01 1.12589e+00 266 2011 12 3.40656e+01 5.40582e-01 778 2012 1 3.74964e+01 7.51889e-01 436 2012 2 4.51328e+01 2.24606e+00 495 2012 3 5.17673e+01 2.31455e+00 764 2012 4 5.78991e+01 1.53948e+00 564 2012 5 6.14982e+01 6.30918e-01 455 2012 6 6.21553e+01 8.64312e-02 206 2012 7 6.13465e+01 6.67843e-01 270 2012 8 5.94418e+01 6.62397e-01 297 2012 9 5.42774e+01 1.79482e+00 506 2012 10 4.57905e+01 1.50274e+00 752 2012 11 3.85278e+01 2.20153e+00 416 2012 12 3.39236e+01 5.50559e-01 585 2013 1 3.60270e+01 1.50447e+00 593 2013 2 4.47424e+01 2.18307e+00 448 2013 3 5.28417e+01 2.34894e+00 690 2013 4 5.82438e+01 1.13245e+00 575 2013 5 6.16909e+01 4.98637e-01 573 2013 6 6.21309e+01 8.62357e-02 295 2013 7 6.12688e+01 5.38171e-01 384 2013 8 5.94218e+01 8.71373e-01 385 2013 9 5.20316e+01 2.14539e+00 231 2013 10 4.63165e+01 1.64004e+00 579 2013 11 3.79356e+01 1.94603e+00 555 2013 12 3.39347e+01 2.39489e-01 320 2014 1 3.48430e+01 9.05308e-01 16 2014 2 4.40913e+01 2.08566e+00 699 2014 3 5.10231e+01 2.09366e+00 727 2014 4 5.81350e+01 1.79719e+00 393 2014 5 6.14286e+01 5.08768e-01 741 2014 6 6.21560e+01 1.19040e-01 594 2014 7 6.15465e+01 3.78560e-01 202 2014 8 5.93620e+01 9.20051e-01 415 2014 9 5.30382e+01 2.66757e+00 195 2014 10 4.59933e+01 2.37488e+00 343 2014 11 3.85158e+01 1.16036e+00 231 2014 12 3.39405e+01 3.59642e-01 538 2015 1 3.51431e+01 1.07279e+00 327 2015 2 4.56782e+01 2.07729e+00 76 2015 3 5.07417e+01 2.33370e+00 720 2015 4 5.70527e+01 1.09888e+00 495 2015 5 6.13434e+01 4.96770e-01 725 2015 6 6.21356e+01 1.25617e-01 259 2015 7 6.18952e+01 1.21065e-01 195 2015 8 5.92702e+01 7.05505e-01 268 2015 9 5.35308e+01 2.25120e+00 547 2015 10 4.54844e+01 1.83892e+00 373 2015 11 3.76704e+01 2.12586e+00 603 2015 12 3.38679e+01 5.16679e-01 375 2016 1 3.40816e+01 2.57294e+00 86 2016 2 3.96678e+01 1.47420e-01 128 2016 3 5.11835e+01 2.20781e+00 531 2016 4 5.85541e+01 1.35585e+00 702 2016 5 6.12664e+01 4.91554e-01 616 2016 6 6.20848e+01 9.54359e-02 451 2016 7 6.17670e+01 4.49546e-01 467 2016 8 5.91789e+01 1.03298e+00 575 2016 9 5.29579e+01 2.21124e+00 749 2016 10 4.52998e+01 1.61239e+00 565 2016 11 3.77743e+01 1.88865e+00 1149 2016 12 3.39018e+01 4.31902e-01 462 2017 1 3.69024e+01 3.15888e-01 288 2017 2 4.42257e+01 2.15861e+00 990 2017 3 5.24462e+01 2.09001e+00 896 2017 4 5.78008e+01 1.50433e+00 576 2017 5 6.14034e+01 5.34615e-01 448 2017 6 6.20892e+01 8.17749e-02 256 2017 7 6.16574e+01 2.40934e-01 185 2017 8 5.86812e+01 1.24252e+00 494 2017 9 5.31927e+01 2.48956e+00 255 2017 10 4.51933e+01 2.04255e+00 454 2017 11 3.77471e+01 1.70757e+00 713 2017 12 3.38339e+01 4.39685e-01 621 2018 1 3.61168e+01 1.60976e+00 253 2018 2 4.42565e+01 1.88537e+00 918 2018 3 5.16141e+01 2.42969e+00 762 2018 4 5.77741e+01 1.39722e+00 679 2018 5 6.10039e+01 3.75230e-01 256 2018 6 6.21120e+01 6.63519e-02 388 2018 7 6.16049e+01 4.60653e-01 446 2018 8 5.88392e+01 1.04484e+00 108 2018 9 5.19888e+01 1.62598e+00 580 2018 10 4.47831e+01 2.26264e+00 942 2018 11 3.84239e+01 1.31685e+00 704 2018 12 3.40515e+01 5.46927e-01 279 2019 1 3.52099e+01 8.48162e-01 513 2019 2 4.40545e+01 1.96632e+00 812 2019 3 5.08328e+01 2.51770e+00 717 2019 4 5.83210e+01 1.43488e+00 532 2019 5 6.14287e+01 5.72759e-01 746 2019 6 6.21994e+01 1.14967e-01 532 2019 7 6.13623e+01 4.79443e-01 463 2019 8 5.90340e+01 1.03172e+00 388 2019 9 5.18213e+01 9.23508e-01 169 2019 10 4.48537e+01 2.13301e+00 566 2019 11 3.76546e+01 2.27632e+00 506 2019 12 3.42189e+01 6.46571e-01 233 2020 1 3.50716e+01 1.27808e+00 403 2020 2 4.41451e+01 1.75057e+00 699 2020 3 5.19008e+01 2.02216e+00 870 2020 4 5.74319e+01 1.59094e+00 448 2020 5 6.10941e+01 3.99864e-01 256 2020 6 6.21270e+01 1.05782e-01 373 2020 7 6.11323e+01 5.17982e-01 253 2020 8 5.91407e+01 1.21814e+00 407 2020 9 5.41556e+01 1.68942e+00 209 2020 10 4.69922e+01 1.58447e+00 165 2020 11 3.70949e+01 1.55547e+00 360 2020 12 3.35539e+01 1.10580e-01 96 2021 1 3.77312e+01 3.24612e-01 196 2021 2 4.48809e+01 1.72414e+00 610 2021 3 5.20514e+01 2.45999e+00 905 2021 4 5.83806e+01 1.77753e+00 687 2021 5 6.16527e+01 6.19678e-01 602 2021 6 6.21184e+01 1.00585e-01 215 2021 7 6.13453e+01 5.57455e-01 435 2021 8 5.96286e+01 8.07190e-01 215 2021 9 5.22420e+01 1.95171e+00 559 2021 10 4.68107e+01 2.02792e+00 218 2021 11 3.59816e+01 1.04658e+00 324 2021 12 3.39731e+01 4.13214e-01 938 2022 1 3.50239e+01 7.11085e-01 329 2022 2 4.65738e+01 8.31520e-01 322 2022 3 5.12961e+01 2.76707e+00 730 2022 4 5.94885e+01 6.95163e-01 320 2022 5 6.10376e+01 4.26395e-01 577 2022 6 6.21744e+01 1.16653e-01 565 2022 7 6.16733e+01 1.92900e-01 199 2022 8 5.88109e+01 5.20058e-01 484 2022 9 5.29683e+01 2.05390e+00 367 2022 10 4.38896e+01 2.26510e+00 314 2022 11 3.81461e+01 2.25188e+00 571 2022 12 3.40279e+01 5.42024e-01 540 2023 1 3.45456e+01 5.74854e-01 247 2023 2 4.37057e+01 2.47927e+00 1081 2023 3 5.14522e+01 2.34634e+00 807 2023 4 5.73668e+01 1.23370e+00 348 2023 5 6.11782e+01 7.49234e-01 577 2023 6 6.21913e+01 5.42772e-02 442 2023 7 6.16762e+01 6.83841e-01 405 2023 8 5.95757e+01 1.11131e+00 424 2023 9 5.40227e+01 1.87410e+00 420 2023 10 4.68770e+01 2.04471e+00 195 2023 11 3.81724e+01 1.38790e+00 609 2023 12 3.38055e+01 1.42137e-01 236 2024 1 3.59680e+01 1.76066e+00 256 2024 2 4.47883e+01 2.62410e+00 675 2024 3 5.37672e+01 1.72583e+00 384 2024 4 5.62207e+01 4.31594e-03 64