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 6.83655e+00 6.94850e-01 64 2002 8 1.59449e+01 2.63815e+01 123 2002 9 2.14939e+01 1.11257e+01 33 2002 10 5.07760e+00 2.18484e+00 421 2002 11 4.78937e+00 2.13578e+00 556 2002 12 5.12016e+00 4.18636e+00 633 2003 1 3.42586e+00 8.11054e-01 979 2003 2 2.01650e+00 3.08742e-01 510 2003 3 1.84662e+01 2.22341e+01 256 2003 4 4.57159e+00 3.29464e+00 342 2003 5 6.13909e+00 4.07045e+00 406 2003 6 5.39991e+00 1.43465e+00 88 2003 7 1.10770e+00 4.85744e-02 29 2003 8 7.47228e+00 5.60524e+00 86 2003 9 1.04582e+01 9.33574e+00 200 2003 10 6.23596e+00 7.77360e+00 548 2003 11 3.21767e+00 1.17787e+00 671 2003 12 4.12563e+00 1.42636e+00 553 2004 1 3.67645e+00 9.10309e-01 724 2004 2 4.85071e+00 1.61810e+00 564 2004 3 1.96385e+00 6.84264e-01 596 2004 4 1.45174e+00 2.76460e-01 254 2004 5 1.55825e+00 3.00265e-01 399 2004 6 2.05634e+00 8.90544e-01 405 2004 7 3.63931e+00 7.81868e-01 160 2004 8 1.81870e+01 1.56975e+01 226 2004 9 6.87558e+00 6.17222e+00 165 2004 10 8.88607e+00 8.35849e+00 333 2004 11 4.96117e+00 3.08140e+00 702 2004 12 2.97437e+00 2.03932e-01 376 2005 1 3.58295e+00 1.64528e+00 578 2005 2 2.33150e+01 1.98749e+01 418 2005 3 9.47795e+00 2.55796e+00 239 2005 4 3.73386e+00 5.54310e-01 282 2005 5 2.95602e+00 6.52916e-01 236 2005 6 6.51297e+00 6.70787e+00 197 2005 7 1.31218e+01 2.23851e+01 319 2005 8 7.73250e+00 1.22722e+01 197 2005 9 1.00844e+01 3.00455e+00 128 2005 10 9.83160e+00 1.31115e+01 418 2005 11 8.70167e+00 9.57927e+00 377 2005 12 8.67649e+00 6.87933e+00 679 2006 1 3.26307e+00 5.22174e-01 316 2006 2 2.28337e+00 3.39850e-01 563 2006 3 1.65879e+00 4.12928e-01 796 2006 4 1.09726e+00 2.71348e-01 374 2006 5 1.32555e+00 2.41664e-01 399 2006 6 1.95077e+00 5.62129e-01 361 2006 7 2.92785e+00 1.82616e+00 158 2006 8 2.00146e+01 1.24629e+01 101 2006 9 2.11646e+01 2.32987e+01 135 2006 10 1.69561e+01 1.60061e+01 417 2006 11 8.44412e+00 9.92645e+00 451 2006 12 2.16356e+00 3.13418e-01 190 2007 1 5.02068e+00 3.39995e+00 547 2007 2 1.85875e+00 5.14270e-01 604 2007 3 1.51314e+00 3.74006e-01 431 2007 4 1.29783e+00 2.30361e-01 272 2007 5 1.41095e+00 1.81273e-01 262 2007 6 1.47568e+00 1.60294e-01 103 2007 7 1.75025e+00 3.14450e-01 282 2007 8 3.64337e+00 8.23049e-01 188 2007 9 1.18154e+01 1.62569e+01 365 2007 10 1.20507e+00 2.87717e-01 195 2007 11 4.27880e+00 3.92666e+00 685 2007 12 2.31555e+00 8.85919e-01 629 2008 1 1.75752e+00 8.23125e-01 513 2008 2 1.16780e+00 3.52018e-01 634 2008 3 2.06072e+00 2.03512e-01 301 2008 4 1.47765e+00 3.56975e-01 445 2008 5 1.72515e+00 3.03306e-01 346 2008 6 1.98859e+00 5.83157e-01 405 2008 7 2.51403e+00 9.71975e-01 98 2008 8 3.16916e+00 6.73947e-01 236 2008 9 7.71722e+00 6.65870e+00 177 2008 10 3.48463e+00 3.21201e+00 577 2008 11 3.52046e+00 5.92330e-01 773 2008 12 3.03478e+00 1.14010e+00 1108 2009 1 2.61502e+00 7.38525e-01 752 2009 2 2.34442e+00 3.28052e-01 555 2009 3 1.83737e+00 4.62571e-01 599 2009 4 1.82430e+00 4.37928e-01 192 2009 5 1.97243e+00 5.55366e-01 316 2009 6 2.47726e+00 3.00151e-01 158 2009 7 1.05168e+01 1.73106e+01 377 2009 8 7.05477e+00 7.27775e+00 158 2009 9 1.50693e+01 2.19802e+01 282 2009 10 5.78170e+00 4.75419e+00 663 2009 11 3.86831e+00 8.67937e-01 434 2009 12 2.93348e+00 5.37617e-01 299 2010 1 2.98267e+00 4.05553e-01 441 2010 2 2.74167e+00 2.04038e-01 381 2010 3 2.59928e+00 2.50639e-01 291 2010 4 2.15395e+00 3.79390e-01 206 2010 5 2.06608e+00 1.34137e+00 437 2010 6 1.79848e+00 2.46973e-01 245 2010 7 2.26603e+00 8.65633e-01 232 2010 8 3.82097e+00 1.33417e+00 240 2010 9 3.37945e+00 1.42212e+00 153 2010 10 2.59652e+00 7.14499e-01 883 2010 11 2.60183e+00 5.31638e-01 764 2010 12 2.66859e+00 4.10919e-01 610 2011 1 2.31828e+00 3.30191e-01 605 2011 2 1.77700e+00 5.35251e-01 746 2011 3 1.11184e+00 3.14301e-01 537 2011 4 1.60090e+00 3.64970e-01 540 2011 5 1.97428e+00 5.75207e-01 374 2011 6 1.98011e+00 4.59223e-01 216 2011 7 2.91862e+00 6.21591e-01 74 2011 8 2.60812e+00 2.38115e-01 100 2011 9 8.24944e+00 4.66389e+00 291 2011 10 5.36246e+00 6.86635e+00 561 2011 11 2.51063e+00 3.83209e-01 536 2011 12 2.17010e+00 6.51115e-01 728 2012 1 2.05009e+00 3.81918e-01 745 2012 2 1.54038e+00 3.69031e-01 513 2012 3 1.30381e+00 3.19802e-01 285 2012 4 1.28785e+00 1.73498e-01 402 2012 5 1.58783e+00 3.94323e-01 469 2012 6 nan nan 0 2012 7 5.16558e+00 1.61238e+00 128 2012 8 5.18010e+00 7.94251e-01 177 2012 9 5.29806e+00 4.55737e+00 193 2012 10 1.44802e+01 1.96900e+01 476 2012 11 4.02339e+00 1.48918e+00 558 2012 12 4.29722e+00 1.11462e+00 329 2013 1 7.27401e+00 3.47977e+00 549 2013 2 3.32647e+00 1.30805e+00 733 2013 3 3.12849e+00 4.43244e-01 515 2013 4 2.05546e+00 7.42566e-01 245 2013 5 2.06267e+00 6.36631e-01 440 2013 6 2.80121e+00 8.60726e-01 379 2013 7 1.93308e+01 2.02718e+01 124 2013 8 1.19802e+01 1.24155e+01 72 2013 9 1.88466e+01 2.11308e+01 430 2013 10 9.38453e+00 1.59789e+01 417 2013 11 7.25605e+00 6.09066e+00 192 2013 12 2.69317e+00 7.38120e-01 658 2014 1 2.75910e+00 5.39032e-01 548 2014 2 3.40382e+00 1.71033e+00 655 2014 3 2.39623e+00 4.15294e-01 478 2014 4 1.90468e+00 4.69192e-01 278 2014 5 1.73519e+00 4.78425e-01 287 2014 6 1.45840e+00 2.19114e-01 111 2014 7 3.25580e+00 6.77779e-01 207 2014 8 3.55949e+00 9.65279e-01 151 2014 9 nan nan 0 2014 10 1.15633e+01 1.31549e+01 688 2014 11 7.21706e+00 9.62986e+00 616 2014 12 5.63529e+00 6.72949e+00 723 2015 1 2.56340e+00 6.40503e-01 511 2015 2 2.99001e+00 5.07635e-01 542 2015 3 1.99096e+00 6.50200e-01 622 2015 4 1.40284e+00 3.81840e-01 233 2015 5 1.65817e+00 3.00637e-01 429 2015 6 2.22937e+00 4.38739e-01 313 2015 7 2.92532e+00 4.15396e-01 192 2015 8 1.83863e+01 2.45905e+01 209 2015 9 8.52723e+00 9.47181e+00 263 2015 10 1.35692e+01 1.72816e+01 318 2015 11 1.49388e+01 2.06453e+01 383 2015 12 6.33066e+00 5.28134e+00 360 2016 1 6.13160e+00 5.58737e+00 291 2016 2 2.84146e+00 7.62119e-01 298 2016 3 3.10252e+00 5.71750e-01 295 2016 4 3.32314e+00 1.38321e+00 417 2016 5 2.12661e+00 5.15405e-01 366 2016 6 2.14140e+00 1.14964e+00 430 2016 7 4.26543e+00 2.10476e+00 363 2016 8 1.55973e+01 1.54545e+01 233 2016 9 8.26836e+00 1.08790e+01 531 2016 10 1.56967e+01 1.48419e+01 361 2016 11 5.65113e+00 3.29232e+00 566 2016 12 4.66711e+00 3.37152e+00 668 2017 1 2.63479e+00 1.14307e+00 436 2017 2 3.16278e+00 9.80540e-01 899 2017 3 1.84170e+00 3.95394e-01 794 2017 4 2.33966e+00 7.48842e-01 434 2017 5 2.34433e+00 2.59923e-01 373 2017 6 3.81631e+00 1.76139e+00 185 2017 7 5.63941e+00 2.10207e+00 127 2017 8 1.84354e+01 1.57097e+01 313 2017 9 2.38448e+01 2.08122e+01 283 2017 10 5.78386e+00 3.01123e+00 291 2017 11 4.65352e+00 2.20001e+00 671 2017 12 2.89949e+00 8.44887e-01 659 2018 1 3.88675e+00 1.25867e+00 580 2018 2 3.96506e+00 1.58208e+00 662 2018 3 3.39822e+00 3.15003e+00 921 2018 4 2.07214e+00 3.40646e-01 641 2018 5 1.83037e+00 3.46960e-01 192 2018 6 1.19366e+01 2.06777e+01 336 2018 7 7.87233e+00 1.19354e+01 370 2018 8 1.22887e+01 1.24459e+01 207 2018 9 4.83819e+01 2.24734e+01 132 2018 10 1.24103e+01 1.49038e+01 295 2018 11 1.99408e+01 1.85707e+01 136 2018 12 4.91497e+00 2.28070e+00 328 2019 1 3.69931e+00 1.11678e+00 425 2019 2 2.30159e+00 3.79558e-01 387 2019 3 1.83787e+00 3.48929e-01 690 2019 4 2.18422e+00 3.47193e-01 254 2019 5 1.57955e+00 2.34599e-01 343 2019 6 1.56015e+00 4.07964e-01 93 2019 7 3.49570e+00 1.60779e+00 342 2019 8 1.42548e+01 2.21099e+01 66 2019 9 3.43326e+00 9.35789e-01 307 2019 10 5.76251e+00 5.71944e+00 418 2019 11 3.61899e+00 1.46940e+00 346 2019 12 3.34837e+00 1.71975e+00 119 2020 1 2.19027e+00 3.40975e-01 624 2020 2 1.56687e+00 5.31323e-01 363 2020 3 1.59149e+00 4.83936e-01 385 2020 4 1.95248e+00 9.25065e-01 256 2020 5 1.36551e+00 2.57865e-01 552 2020 6 3.99029e+00 1.15716e+00 322 2020 7 3.57760e+00 1.11175e+00 130 2020 8 3.01106e+00 3.68752e-01 192 2020 9 4.00774e+00 1.31886e+00 207 2020 10 1.19646e+01 5.36499e+00 181 2020 11 7.02690e+00 3.26790e+00 354 2020 12 3.71771e+00 1.14576e+00 642 2021 1 2.59682e+00 7.30112e-01 624 2021 2 2.40272e+00 2.59287e-01 410 2021 3 1.63352e+00 4.03122e-01 359 2021 4 2.13991e+00 8.26434e-01 597 2021 5 3.98380e+00 1.14036e+00 444 2021 6 2.07449e+00 0.00000e+00 2 2021 7 5.06504e+00 1.58791e+00 293 2021 8 1.79486e+01 1.63733e+01 124 2021 9 1.63652e+01 1.52771e+01 363 2021 10 2.51130e+01 1.74595e+01 218 2021 11 7.74414e+00 5.93417e+00 543 2021 12 5.07700e+00 3.54470e+00 584 2022 1 3.19348e+00 8.15468e-01 351 2022 2 2.79027e+00 7.18284e-01 697 2022 3 1.67935e+00 2.97596e-01 725 2022 4 1.08622e+00 1.36366e-01 49 2022 5 1.34571e+00 3.88027e-01 506 2022 6 1.36059e+00 2.80310e-01 191 2022 7 2.49366e+00 1.10259e+00 368 2022 8 1.10158e+01 1.22639e+01 314 2022 9 1.49151e+01 1.48137e+01 357 2022 10 1.26158e+01 1.78177e+01 563 2022 11 1.17542e+01 1.35695e+01 395 2022 12 8.89863e+00 1.26563e+01 549 2023 1 5.98994e+00 5.56303e+00 954 2023 2 8.36643e+00 8.62500e+00 1067 2023 3 4.26049e+00 3.53136e+00 915 2023 4 3.09001e+00 1.07351e+00 388 2023 5 1.68358e+00 3.64263e-01 511 2023 6 1.87173e+00 7.30402e-01 327 2023 7 4.54090e+00 3.13986e+00 309 2023 8 9.71180e+00 8.44511e+00 233 2023 9 6.85596e+00 8.25848e+00 533 2023 10 4.14952e+00 1.59035e+00 465 2023 11 4.62271e+00 3.08793e+00 616 2023 12 2.45645e+00 5.37089e-01 420 2024 1 2.49528e+00 4.37365e-01 360 2024 2 2.32483e+00 4.13105e-01 770 2024 3 4.67022e+00 4.79938e+00 419 2024 4 2.09585e+00 7.06955e-02 22