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 6.65452e+01 7.31985e+00 288 2002 8 5.15066e+01 6.17666e+00 136 2002 9 4.16699e+01 1.32832e+01 422 2002 10 4.46162e+01 1.20022e+01 798 2002 11 4.05501e+01 1.57710e+01 346 2002 12 7.10856e+00 2.39160e+00 320 2003 1 1.51884e+01 4.02644e-01 64 2003 2 2.47031e+01 1.12717e+01 290 2003 3 5.70501e+01 8.82454e+00 246 2003 4 4.05025e+01 6.95525e+00 128 2003 5 4.07850e+01 2.22388e-01 4 2003 6 5.44549e+01 2.01983e+00 57 2003 7 6.01206e+01 5.35555e+00 5 2003 8 6.24966e+01 8.35983e+00 203 2003 9 5.02468e+01 1.11653e+01 192 2003 10 4.36545e+01 1.21246e+01 935 2003 11 1.54145e+01 9.01073e+00 622 2003 12 3.26690e+01 1.67076e+01 303 2004 1 3.54373e+01 1.61989e+01 692 2004 2 4.68676e+01 8.18651e+00 384 2004 3 4.84461e+01 5.12872e+00 128 2004 4 nan nan 0 2004 5 3.82097e+01 6.44562e+00 120 2004 6 5.38755e+01 3.14436e+00 124 2004 7 5.90914e+01 6.00140e+00 253 2004 8 5.10349e+01 8.97647e+00 392 2004 9 nan nan 0 2004 10 4.27356e+01 6.10540e+00 754 2004 11 3.24373e+01 7.01825e+00 837 2004 12 2.97594e+01 1.20439e+01 451 2005 1 1.59844e+01 7.15776e+00 894 2005 2 3.02652e+01 8.13607e+00 314 2005 3 3.18048e+01 1.53495e+01 121 2005 4 nan nan 0 2005 5 4.65893e+01 1.76439e-01 14 2005 6 3.77668e+01 4.17004e+00 302 2005 7 5.19537e+01 1.95317e+01 170 2005 8 2.89442e+01 6.49763e+00 289 2005 9 1.64570e+01 2.24746e+00 28 2005 10 3.21723e+00 6.63681e-01 23 2005 11 3.57927e+00 1.72227e+00 73 2005 12 5.23485e+00 2.85970e+00 320 2006 1 1.20331e+01 4.09725e+00 127 2006 2 2.25844e+01 5.19285e+00 129 2006 3 4.72516e+01 1.21346e+00 3 2006 4 nan nan 0 2006 5 nan nan 0 2006 6 6.29139e+01 4.53567e+00 120 2006 7 6.36973e+01 4.13198e+00 105 2006 8 5.51135e+01 1.08519e+01 166 2006 9 5.09601e+01 8.85087e+00 263 2006 10 5.27934e+01 1.08456e+01 716 2006 11 2.88392e+01 1.34130e+01 630 2006 12 2.07503e+01 8.67523e+00 397 2007 1 3.54106e+01 9.45618e+00 779 2007 2 3.81513e+01 8.84023e+00 373 2007 3 4.19254e+01 6.36047e+00 285 2007 4 4.38281e+01 3.58592e+00 154 2007 5 4.12194e+01 2.12057e+00 41 2007 6 3.23197e+01 5.50789e+00 434 2007 7 5.00184e+01 6.47722e+00 306 2007 8 4.45427e+01 1.14908e+01 440 2007 9 5.01712e+01 8.66862e+00 500 2007 10 3.20750e+01 1.27879e+01 705 2007 11 2.65131e+01 1.01566e+01 1088 2007 12 3.94666e+01 1.05011e+01 1099 2008 1 2.21502e+01 1.05703e+01 454 2008 2 3.50355e+01 5.63794e+00 494 2008 3 3.87295e+01 5.56925e+00 118 2008 4 5.16081e+01 3.65425e+00 131 2008 5 5.32913e+01 4.48295e+00 185 2008 6 4.21747e+01 7.81557e+00 254 2008 7 2.26390e+01 4.77795e+00 133 2008 8 2.11376e+01 5.17295e+00 192 2008 9 2.51292e+01 9.43146e+00 129 2008 10 3.03157e+01 8.80029e+00 293 2008 11 1.58387e+01 8.82662e+00 709 2008 12 1.72879e+01 9.09951e+00 839 2009 1 2.55400e+01 1.09724e+01 565 2009 2 4.07712e+01 1.40809e+01 322 2009 3 5.83425e+01 2.51468e+00 69 2009 4 5.00022e+01 6.01552e+00 256 2009 5 4.76819e+01 5.37100e+00 516 2009 6 5.18158e+01 5.48105e+00 196 2009 7 5.26339e+01 7.21643e+00 362 2009 8 3.12526e+01 1.01385e+01 105 2009 9 5.08457e+01 6.47598e+00 402 2009 10 4.80607e+01 1.11572e+01 785 2009 11 1.71100e+01 1.21231e+01 671 2009 12 2.49679e+01 7.43929e+00 514 2010 1 1.55855e+01 6.91687e+00 329 2010 2 2.32291e+01 1.23208e+01 129 2010 3 nan nan 0 2010 4 nan nan 0 2010 5 5.50528e+01 3.00352e+00 383 2010 6 5.95797e+01 3.45662e+00 218 2010 7 4.68002e+01 7.93398e+00 447 2010 8 4.43834e+01 5.10757e+00 374 2010 9 5.74137e+01 4.48395e+00 632 2010 10 2.11353e+01 1.03509e+01 809 2010 11 1.58328e+01 7.75953e+00 604 2010 12 8.89478e+00 7.02649e+00 310 2011 1 1.35880e+01 9.72882e+00 253 2011 2 2.14060e+01 4.98251e+00 23 2011 3 4.36016e+01 2.95922e+00 75 2011 4 5.57921e+01 7.06539e+00 512 2011 5 4.87965e+01 7.78583e+00 183 2011 6 3.58775e+01 5.75668e+00 149 2011 7 4.35219e+01 4.45558e+00 265 2011 8 3.94722e+01 2.83308e+00 69 2011 9 3.32179e+01 8.42950e+00 539 2011 10 4.35049e+01 1.35806e+01 356 2011 11 1.56990e+01 8.11368e+00 866 2011 12 2.58024e+01 8.01322e+00 1147 2012 1 2.34310e+01 8.22495e+00 909 2012 2 3.33811e+01 5.68731e+00 562 2012 3 3.55639e+01 9.05010e+00 648 2012 4 4.68384e+01 5.11111e+00 576 2012 5 3.13845e+01 6.53484e+00 254 2012 6 4.87577e+01 5.09158e+00 312 2012 7 6.16083e+01 2.89248e+00 128 2012 8 5.41620e+01 8.97196e+00 293 2012 9 3.11097e+01 6.48401e+00 370 2012 10 4.06755e+01 5.74226e+00 321 2012 11 1.96256e+01 7.52118e+00 828 2012 12 2.13739e+01 9.21594e+00 761 2013 1 2.95095e+01 8.03360e+00 772 2013 2 2.20336e+01 6.78824e+00 545 2013 3 3.54229e+01 6.69813e+00 192 2013 4 4.10652e+01 5.40641e+00 171 2013 5 4.01489e+01 6.41732e+00 335 2013 6 4.15685e+01 4.64570e+00 238 2013 7 3.83448e+01 5.56504e+00 134 2013 8 2.80731e+01 0.00000e+00 2 2013 9 4.43719e+01 8.84955e+00 256 2013 10 5.03031e+01 4.09646e+00 820 2013 11 3.55881e+01 1.08912e+01 772 2013 12 2.67468e+01 5.41713e+00 756 2014 1 3.40823e+01 1.16913e+01 1011 2014 2 4.18886e+01 9.05565e+00 803 2014 3 4.97365e+01 6.33394e+00 749 2014 4 4.96540e+01 5.21882e+00 520 2014 5 4.01132e+01 1.18518e+01 496 2014 6 5.34546e+01 7.11623e+00 379 2014 7 5.95534e+01 4.83223e+00 308 2014 8 5.99432e+01 4.31163e+00 705 2014 9 4.81738e+01 5.08167e+00 169 2014 10 3.60260e+01 9.76674e+00 1148 2014 11 2.28100e+01 1.03802e+01 822 2014 12 1.99623e+01 7.88466e+00 752 2015 1 2.08540e+01 8.58200e+00 739 2015 2 2.05006e+01 8.49375e+00 336 2015 3 3.48502e+01 1.24940e+01 416 2015 4 4.66122e+01 4.01849e+00 402 2015 5 2.91909e+01 4.70998e+00 324 2015 6 3.48461e+01 3.68853e+00 447 2015 7 4.39274e+01 6.37046e+00 306 2015 8 3.42430e+01 1.07939e+01 305 2015 9 3.17485e+01 9.70718e+00 426 2015 10 2.94327e+01 9.67459e+00 561 2015 11 3.49156e+01 1.32812e+01 959 2015 12 3.49862e+01 9.02138e+00 583 2016 1 2.63916e+01 9.52918e+00 146 2016 2 3.43929e+01 8.68039e+00 436 2016 3 3.08760e+01 9.68092e+00 265 2016 4 3.31153e+01 8.14057e+00 458 2016 5 4.36337e+01 5.95520e+00 410 2016 6 4.64044e+01 8.06968e+00 384 2016 7 5.14914e+01 4.58082e+00 401 2016 8 5.39041e+01 1.75556e+00 261 2016 9 5.83044e+01 3.31451e+00 578 2016 10 4.10380e+01 7.85222e+00 585 2016 11 3.58721e+01 6.23714e+00 1133 2016 12 1.80947e+01 6.89160e+00 745 2017 1 2.13188e+01 1.36214e+01 628 2017 2 1.91175e+01 7.00247e+00 683 2017 3 1.69810e+01 5.61650e+00 108 2017 4 2.42255e+01 5.20484e+00 62 2017 5 2.59882e+01 7.42943e+00 346 2017 6 4.32866e+01 4.73158e+00 170 2017 7 4.39986e+01 6.74291e+00 200 2017 8 5.02486e+01 8.39690e+00 384 2017 9 3.95249e+01 1.86940e+01 138 2017 10 5.54599e+00 3.97894e+00 217 2017 11 4.38370e+00 1.55100e+00 260 2017 12 4.73302e+00 3.55403e+00 440 2018 1 1.68138e+01 7.22342e+00 188 2018 2 1.69875e+01 5.40642e+00 425 2018 3 nan nan 0 2018 4 3.32266e+01 3.67936e-01 3 2018 5 nan nan 0 2018 6 6.67322e+01 2.49582e+00 105 2018 7 6.55527e+01 3.87137e+00 111 2018 8 4.78000e+01 7.04582e+00 85 2018 9 5.32140e+01 1.34033e+01 346 2018 10 4.92413e+01 8.53035e+00 670 2018 11 5.10876e+01 1.11549e+01 307 2018 12 2.54568e+01 1.11982e+01 569 2019 1 2.15777e+01 1.06069e+01 673 2019 2 3.77865e+01 8.40772e+00 690 2019 3 3.80124e+01 1.08579e+01 367 2019 4 4.19323e+01 1.07507e+01 169 2019 5 4.73899e+01 3.25755e-01 8 2019 6 5.68295e+01 4.26926e+00 222 2019 7 5.28688e+01 5.39091e+00 188 2019 8 4.48504e+01 3.01463e+00 121 2019 9 3.80158e+01 1.32408e+01 217 2019 10 3.48994e+01 1.20641e+01 616 2019 11 3.39883e+01 9.78685e+00 899 2019 12 3.35582e+01 7.12290e+00 504 2020 1 3.09550e+01 1.07914e+01 816 2020 2 2.85850e+01 9.64657e+00 622 2020 3 4.01743e+01 8.52020e+00 602 2020 4 4.68595e+01 6.35295e+00 237 2020 5 4.83726e+01 5.47143e+00 429 2020 6 5.95475e+01 1.93168e+00 467 2020 7 4.93204e+01 3.91024e+00 282 2020 8 5.25559e+01 8.60966e+00 640 2020 9 4.31414e+01 1.07278e+01 538 2020 10 3.47255e+01 5.34428e+00 396 2020 11 2.43345e+01 9.06131e+00 448 2020 12 2.82898e+01 8.43636e+00 972 2021 1 3.38094e+01 9.99638e+00 768 2021 2 2.54502e+01 6.69608e+00 750 2021 3 2.62745e+01 8.61753e+00 389 2021 4 4.46953e+01 3.40453e+00 125 2021 5 3.78720e+01 1.08377e+01 651 2021 6 4.47658e+01 1.03508e+01 257 2021 7 5.21188e+01 5.00039e+00 565 2021 8 4.44643e+01 7.98374e+00 372 2021 9 4.84290e+01 6.34677e+00 459 2021 10 4.13632e+01 9.20062e+00 795 2021 11 2.46345e+01 1.29352e+01 796 2021 12 3.47567e+01 6.34383e+00 1028 2022 1 2.93593e+01 9.56150e+00 568 2022 2 2.79640e+01 9.53949e+00 689 2022 3 3.39174e+01 9.09072e+00 411 2022 4 3.96500e+01 2.03999e+00 67 2022 5 4.42816e+01 6.97397e+00 515 2022 6 5.11295e+01 4.16515e+00 479 2022 7 5.66223e+01 3.88450e+00 320 2022 8 3.92546e+01 1.08089e+01 142 2022 9 2.01206e+01 6.69469e+00 245 2022 10 2.91529e+01 7.05858e+00 964 2022 11 3.01389e+01 9.78605e+00 1114 2022 12 2.20910e+01 9.03082e+00 793 2023 1 3.02747e+01 1.09495e+01 618 2023 2 3.79882e+01 1.29819e+01 926 2023 3 4.41739e+01 8.45386e+00 547 2023 4 4.88686e+01 5.20729e+00 269 2023 5 3.86967e+01 7.73991e+00 700 2023 6 3.51184e+01 2.04196e+00 119 2023 7 4.19394e+01 3.39691e+00 219 2023 8 2.37318e+01 2.61971e+00 128 2023 9 2.51316e+01 6.81862e+00 301 2023 10 3.46308e+01 9.87797e+00 585 2023 11 1.95854e+01 9.93384e+00 769 2023 12 2.26562e+01 1.25711e+01 226 2024 1 1.94722e+01 5.62997e+00 211 2024 2 1.98712e+01 8.71900e+00 292 2024 3 3.86292e+01 6.15373e+00 269 2024 4 4.27851e+01 8.33356e-01 64