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 2.99215e+00 1.40299e+00 177 2002 8 3.45754e+00 2.79447e+00 327 2002 9 3.59799e+00 1.04041e+00 143 2002 10 3.67987e+00 1.82399e+00 605 2002 11 4.57474e+00 2.52382e+00 494 2002 12 3.78141e+00 1.23614e+00 479 2003 1 6.46526e+00 2.50245e+00 625 2003 2 4.57985e+00 1.72532e+00 452 2003 3 1.93571e+01 1.19383e+01 310 2003 4 2.28147e+01 9.88483e+00 170 2003 5 9.86125e+00 2.72939e+00 64 2003 6 5.72113e+00 3.03289e+00 115 2003 7 8.79010e+00 5.13728e+00 75 2003 8 1.46629e+01 1.00307e+01 121 2003 9 6.30633e+00 3.27219e+00 313 2003 10 6.92517e+00 4.55470e+00 501 2003 11 4.79416e+00 1.84180e+00 772 2003 12 3.88453e+00 1.56945e+00 677 2004 1 3.40342e+00 7.73697e-01 490 2004 2 3.19216e+00 6.35933e-01 231 2004 3 5.71201e+00 2.98545e+00 644 2004 4 3.40125e+00 1.14670e+00 295 2004 5 3.45108e+00 1.13382e+00 335 2004 6 2.95972e+00 1.59253e+00 321 2004 7 4.17309e+00 1.78179e+00 131 2004 8 4.18037e+00 2.55985e+00 287 2004 9 5.31125e+00 5.84207e+00 162 2004 10 8.23184e+00 6.48887e+00 116 2004 11 2.17029e+01 8.42369e+00 83 2004 12 9.08160e+00 6.23290e+00 135 2005 1 1.07732e+01 7.12447e+00 417 2005 2 8.17545e+00 3.14267e+00 389 2005 3 5.34076e+00 3.19193e+00 219 2005 4 1.27483e+01 4.99363e+00 262 2005 5 1.00221e+01 3.32914e+00 242 2005 6 9.89779e+00 8.81395e+00 180 2005 7 2.38905e+01 1.06820e+01 15 2005 8 1.66356e+01 8.84668e+00 109 2005 9 1.01320e+01 6.78647e+00 207 2005 10 6.35037e+00 4.05900e+00 592 2005 11 4.24613e+00 2.66920e+00 495 2005 12 4.62803e+00 2.38730e+00 592 2006 1 8.73711e+00 4.41618e+00 513 2006 2 9.61247e+00 3.41842e+00 371 2006 3 1.39544e+01 8.32369e+00 907 2006 4 4.99216e+00 2.61704e+00 311 2006 5 2.78937e+00 1.40724e+00 242 2006 6 3.14390e+00 9.91823e-01 200 2006 7 4.62341e+00 1.28974e+00 59 2006 8 5.14080e+00 3.84130e+00 122 2006 9 5.84123e+00 3.29754e+00 337 2006 10 5.07987e+00 2.94444e+00 451 2006 11 3.38250e+00 1.55078e+00 554 2006 12 2.61756e+00 1.33345e+00 368 2007 1 3.15620e+00 1.06781e+00 339 2007 2 2.44683e+00 7.39805e-01 517 2007 3 2.49802e+00 7.64272e-01 860 2007 4 2.81747e+00 1.10478e+00 471 2007 5 3.03742e+00 1.28172e+00 76 2007 6 3.09289e+00 1.01230e+00 150 2007 7 4.20560e+00 4.96665e+00 196 2007 8 4.66987e+00 1.78891e+00 195 2007 9 5.91961e+00 3.54220e+00 205 2007 10 5.38916e+00 4.50452e+00 506 2007 11 4.26694e+00 2.75178e+00 795 2007 12 3.24275e+00 1.75701e+00 463 2008 1 3.21845e+00 2.17490e+00 350 2008 2 3.10275e+00 7.89974e-01 760 2008 3 9.31101e+00 9.36074e+00 623 2008 4 8.73882e+00 4.13611e+00 499 2008 5 6.06689e+00 1.85681e+00 362 2008 6 4.80086e+00 1.49763e+00 199 2008 7 4.51521e+00 4.47955e+00 217 2008 8 5.98750e+00 3.45421e+00 168 2008 9 6.79296e+00 7.14005e+00 138 2008 10 6.84601e+00 3.50408e+00 639 2008 11 3.85488e+00 1.08016e+00 649 2008 12 5.71844e+00 2.37816e+00 680 2009 1 6.13483e+00 4.01789e+00 521 2009 2 3.96467e+00 1.33397e+00 791 2009 3 3.32693e+00 1.30399e+00 774 2009 4 5.50790e+00 2.46785e+00 492 2009 5 9.80521e+00 3.36120e+00 64 2009 6 5.04548e+00 6.67358e-01 58 2009 7 3.59021e+00 1.77043e+00 111 2009 8 7.90705e+00 5.40756e+00 207 2009 9 8.03463e+00 2.87029e+00 380 2009 10 4.20168e+00 1.20253e+00 667 2009 11 3.55197e+00 2.58924e+00 499 2009 12 3.13751e+00 1.37302e+00 186 2010 1 4.22187e+00 1.99351e+00 729 2010 2 1.76398e+01 8.27946e+00 448 2010 3 2.10984e+01 9.41009e+00 637 2010 4 1.01910e+01 4.86249e+00 412 2010 5 5.94257e+00 2.95883e+00 323 2010 6 4.19776e+00 1.25556e+00 367 2010 7 5.40629e+00 2.78466e+00 149 2010 8 4.53434e+00 9.71614e-01 80 2010 9 5.51125e+00 3.25854e+00 356 2010 10 3.49441e+00 1.74389e+00 1083 2010 11 3.08510e+00 1.09243e+00 831 2010 12 4.19271e+00 3.30873e+00 558 2011 1 3.30502e+00 1.58895e+00 502 2011 2 2.59841e+00 8.69908e-01 649 2011 3 3.19775e+00 1.39441e+00 751 2011 4 3.13075e+00 9.99576e-01 611 2011 5 2.89769e+00 1.04801e+00 520 2011 6 2.87401e+00 1.02974e+00 152 2011 7 3.48345e+00 2.41021e+00 226 2011 8 3.75465e+00 1.40703e+00 259 2011 9 3.47296e+00 1.14993e+00 600 2011 10 3.24614e+00 1.93511e+00 544 2011 11 2.89495e+00 1.07043e+00 829 2011 12 3.18528e+00 1.96361e+00 800 2012 1 2.76842e+00 1.79994e+00 886 2012 2 3.46310e+00 1.97047e+00 185 2012 3 2.69881e+00 1.00143e+00 662 2012 4 2.39262e+00 6.78829e-01 500 2012 5 2.52463e+00 6.04354e-01 314 2012 6 3.84778e+00 9.49011e-01 44 2012 7 6.77512e+00 6.33694e+00 174 2012 8 1.98735e+01 1.04016e+01 55 2012 9 1.56712e+01 7.79986e+00 245 2012 10 1.32351e+01 6.75707e+00 361 2012 11 6.56529e+00 2.22551e+00 636 2012 12 5.62649e+00 1.61374e+00 249 2013 1 4.32078e+00 1.92978e+00 504 2013 2 4.59053e+00 1.22374e+00 402 2013 3 5.06190e+00 2.51996e+00 550 2013 4 1.10139e+01 7.04178e+00 458 2013 5 5.91871e+00 2.10147e+00 292 2013 6 1.23094e+01 9.25723e+00 315 2013 7 2.17730e+01 1.12698e+01 9 2013 8 3.27188e+01 8.32387e+00 78 2013 9 1.59444e+01 7.12452e+00 406 2013 10 1.00883e+01 4.59607e+00 563 2013 11 7.35644e+00 4.13945e+00 258 2013 12 4.88174e+00 2.16341e+00 649 2014 1 5.51116e+00 1.67236e+00 297 2014 2 5.02005e+00 2.09238e+00 537 2014 3 1.39466e+01 9.11292e+00 465 2014 4 1.99825e+01 1.14480e+01 358 2014 5 1.95143e+01 8.13304e+00 163 2014 6 1.20324e+01 7.96459e+00 126 2014 7 1.02808e+01 5.16858e+00 407 2014 8 6.60039e+00 2.25769e+00 240 2014 9 5.69479e+00 2.54904e+00 130 2014 10 6.25927e+00 2.79185e+00 1107 2014 11 5.39004e+00 3.00540e+00 736 2014 12 3.10520e+00 1.48421e+00 434 2015 1 3.25660e+00 1.54278e+00 533 2015 2 4.81389e+00 1.78168e+00 647 2015 3 8.07056e+00 4.06277e+00 387 2015 4 8.36871e+00 3.50203e+00 165 2015 5 6.16157e+00 1.34125e+00 290 2015 6 4.93272e+00 1.39931e+00 188 2015 7 4.07357e+00 2.59409e+00 79 2015 8 1.01731e+01 8.21015e+00 181 2015 9 nan nan 0 2015 10 5.01216e+00 2.07134e+00 520 2015 11 6.74043e+00 3.99660e+00 517 2015 12 4.90312e+00 2.76916e+00 424 2016 1 4.95338e+00 2.45731e+00 336 2016 2 5.18382e+00 3.69371e+00 852 2016 3 5.98527e+00 3.10009e+00 696 2016 4 5.61933e+00 1.94786e+00 327 2016 5 5.87373e+00 5.57439e+00 385 2016 6 3.40087e+00 1.17383e+00 398 2016 7 4.52622e+00 2.62046e+00 438 2016 8 1.29699e+01 7.94833e+00 454 2016 9 8.25848e+00 3.58984e+00 361 2016 10 7.87752e+00 6.13132e+00 562 2016 11 3.23171e+00 1.58351e+00 807 2016 12 3.75123e+00 1.80684e+00 601 2017 1 4.13222e+00 3.05519e+00 511 2017 2 3.38971e+00 1.60780e+00 784 2017 3 3.56078e+00 1.34410e+00 764 2017 4 2.93947e+00 7.09792e-01 584 2017 5 2.82184e+00 7.83834e-01 361 2017 6 3.22275e+00 2.09700e+00 173 2017 7 6.00864e+00 1.60901e+00 118 2017 8 7.33232e+00 3.13595e+00 394 2017 9 7.84159e+00 3.61995e+00 440 2017 10 1.62032e+01 9.00769e+00 418 2017 11 5.58240e+00 2.35560e+00 1087 2017 12 3.63741e+00 1.16662e+00 626 2018 1 4.22070e+00 1.43852e+00 391 2018 2 4.91667e+00 2.16663e+00 555 2018 3 4.98690e+00 2.03896e+00 582 2018 4 4.32372e+00 1.50412e+00 474 2018 5 5.75776e+00 1.94750e+00 326 2018 6 4.85117e+00 9.61523e-01 264 2018 7 9.40804e+00 6.62086e+00 101 2018 8 2.96763e+01 1.03759e+01 98 2018 9 1.13508e+01 6.81047e+00 541 2018 10 7.64187e+00 3.46838e+00 638 2018 11 5.03152e+00 7.89304e-01 64 2018 12 8.55762e+00 5.81241e+00 542 2019 1 1.87031e+01 7.27097e+00 270 2019 2 1.98870e+01 5.27923e+00 223 2019 3 1.00055e+01 7.51215e+00 513 2019 4 8.33838e+00 6.94425e+00 385 2019 5 4.72815e+00 1.89476e+00 298 2019 6 3.64665e+00 2.80947e+00 72 2019 7 3.62973e+00 1.35113e+00 103 2019 8 8.02349e+00 5.43537e+00 187 2019 9 6.53561e+00 3.18426e+00 331 2019 10 6.29310e+00 1.24913e+00 484 2019 11 4.01774e+00 1.70933e+00 649 2019 12 4.26894e+00 2.28642e+00 292 2020 1 5.66077e+00 3.59044e+00 430 2020 2 4.73758e+00 2.46795e+00 410 2020 3 4.63443e+00 1.30363e+00 620 2020 4 5.74719e+00 1.86449e+00 360 2020 5 4.54728e+00 2.49643e+00 561 2020 6 4.54496e+00 1.47768e+00 279 2020 7 7.39604e+00 4.27282e+00 136 2020 8 6.63120e+00 1.93770e+00 145 2020 9 9.85332e+00 3.63237e+00 168 2020 10 8.13643e+00 2.51519e+00 473 2020 11 7.04501e+00 2.78161e+00 550 2020 12 3.70476e+00 2.31993e+00 441 2021 1 5.86482e+00 4.49755e+00 286 2021 2 5.55309e+00 1.30080e+00 377 2021 3 6.60510e+00 4.72047e+00 496 2021 4 9.40181e+00 4.83589e+00 619 2021 5 7.41406e+00 4.30905e+00 429 2021 6 5.13376e+00 1.01024e+00 140 2021 7 8.53037e+00 1.86964e+00 64 2021 8 3.04108e+01 1.13146e+01 21 2021 9 1.95756e+01 8.60817e+00 325 2021 10 1.02061e+01 4.83033e+00 304 2021 11 6.17305e+00 1.95112e+00 743 2021 12 5.09962e+00 1.56915e+00 646 2022 1 5.95036e+00 2.22396e+00 441 2022 2 4.32457e+00 1.89573e+00 800 2022 3 7.53461e+00 7.12932e+00 693 2022 4 1.91480e+01 1.22424e+01 77 2022 5 1.22939e+01 7.73307e+00 401 2022 6 5.79165e+00 1.22902e+00 236 2022 7 6.26221e+00 3.35486e+00 198 2022 8 7.12688e+00 2.58843e+00 341 2022 9 6.41341e+00 2.84093e+00 190 2022 10 3.73150e+00 1.70646e+00 1016 2022 11 5.64357e+00 4.07397e+00 399 2022 12 3.62705e+00 1.77300e+00 764 2023 1 3.52055e+00 1.27231e+00 783 2023 2 4.11932e+00 2.25838e+00 649 2023 3 8.51101e+00 7.37017e+00 643 2023 4 6.87817e+00 3.07813e+00 444 2023 5 4.86085e+00 1.55462e+00 244 2023 6 5.07722e+00 6.53114e+00 151 2023 7 9.63249e+00 5.72968e+00 369 2023 8 6.92097e+00 5.80019e+00 371 2023 9 1.28459e+01 9.49898e+00 327 2023 10 6.72815e+00 4.24758e+00 592 2023 11 5.07725e+00 2.15053e+00 631 2023 12 6.31160e+00 2.52174e+00 222 2024 1 1.58967e+01 6.46032e+00 304 2024 2 1.52792e+01 8.91256e+00 732 2024 3 1.03208e+01 3.41305e+00 340 2024 4 nan nan 0