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 2.01384e+01 1.48611e+01 148 2002 8 2.85646e+01 1.68807e+01 82 2002 9 1.79890e+01 2.73685e+00 254 2002 10 1.09393e+01 3.06292e+00 409 2002 11 9.70283e+00 3.10029e+00 553 2002 12 8.53140e+00 2.40658e+00 398 2003 1 9.94678e+00 2.97928e+00 467 2003 2 8.99491e+00 2.33380e+00 499 2003 3 1.45576e+01 3.82105e+00 183 2003 4 9.42887e+00 3.35529e+00 367 2003 5 1.18706e+01 2.79404e+00 302 2003 6 2.10951e+01 6.16877e+00 59 2003 7 3.17906e+01 1.86464e+01 129 2003 8 2.60518e+01 2.75264e+01 103 2003 9 2.04255e+01 1.74928e+01 237 2003 10 2.33768e+01 1.29472e+01 440 2003 11 1.27045e+01 4.29602e+00 578 2003 12 8.18233e+00 3.09914e+00 604 2004 1 7.93124e+00 4.78683e+00 661 2004 2 5.45842e+00 1.74182e+00 473 2004 3 7.95510e+00 2.33475e+00 374 2004 4 6.28689e+00 2.50451e+00 306 2004 5 1.06508e+01 2.31258e+00 311 2004 6 1.03891e+01 2.19458e+00 318 2004 7 1.40099e+01 4.33065e+00 312 2004 8 1.63580e+01 4.10066e+00 285 2004 9 1.43259e+01 9.17739e+00 95 2004 10 1.74477e+01 1.03703e+01 406 2004 11 1.72585e+01 8.95260e+00 479 2004 12 1.21477e+01 9.64047e+00 419 2005 1 8.18622e+00 5.64828e+00 728 2005 2 8.28477e+00 1.93425e+00 468 2005 3 1.00896e+01 2.31355e+00 268 2005 4 9.32593e+00 5.81865e+00 344 2005 5 1.16394e+01 2.16849e+00 195 2005 6 3.56564e+01 3.70055e+00 20 2005 7 1.61439e+01 3.71748e+00 176 2005 8 2.94623e+01 1.68417e+01 286 2005 9 2.08550e+01 6.64559e+00 328 2005 10 1.65562e+01 9.61034e+00 383 2005 11 1.64127e+01 1.27951e+01 441 2005 12 1.46377e+01 1.09329e+01 606 2006 1 7.38177e+00 2.67733e+00 499 2006 2 6.22120e+00 2.90833e+00 605 2006 3 5.96496e+00 1.32904e+00 664 2006 4 6.34132e+00 1.23861e+00 278 2006 5 1.09983e+01 5.22898e+00 362 2006 6 8.64270e+00 2.75184e+00 242 2006 7 9.28847e+00 0.00000e+00 1 2006 8 1.58934e+01 1.79235e+01 265 2006 9 3.03332e+01 1.64474e+01 311 2006 10 2.66383e+01 1.69346e+01 637 2006 11 1.16028e+01 3.10587e+00 586 2006 12 1.00267e+01 7.15842e+00 189 2007 1 7.57273e+00 2.61439e+00 526 2007 2 6.23814e+00 2.48993e+00 665 2007 3 7.21125e+00 2.67375e+00 168 2007 4 6.04158e+00 1.56499e+00 213 2007 5 6.52151e+00 1.37947e+00 97 2007 6 9.59049e+00 5.50417e+00 328 2007 7 1.17443e+01 2.95186e+00 290 2007 8 1.09538e+01 4.10654e+00 126 2007 9 9.84961e+00 2.80416e+00 357 2007 10 1.19612e+01 3.73172e+00 238 2007 11 1.20159e+01 9.11446e+00 661 2007 12 8.21117e+00 2.51709e+00 682 2008 1 7.56293e+00 2.63011e+00 502 2008 2 1.03214e+01 3.71465e+00 526 2008 3 7.36722e+00 2.42464e+00 509 2008 4 8.13567e+00 3.54935e+00 383 2008 5 6.86516e+00 6.78120e-01 225 2008 6 8.48608e+00 1.24557e+00 219 2008 7 1.18701e+01 3.14997e+00 137 2008 8 1.16993e+01 3.72740e+00 171 2008 9 2.03306e+01 6.24277e+00 133 2008 10 1.38033e+01 6.40844e+00 469 2008 11 1.13671e+01 4.54234e+00 711 2008 12 7.58158e+00 2.60820e+00 924 2009 1 5.04449e+00 1.95216e+00 695 2009 2 4.17419e+00 5.49795e-01 682 2009 3 4.53668e+00 1.17252e+00 295 2009 4 5.01369e+00 8.52838e-01 172 2009 5 6.38695e+00 1.01754e+00 301 2009 6 6.78169e+00 1.33072e+00 158 2009 7 1.91319e+01 6.87784e+00 243 2009 8 2.35855e+01 5.56227e+00 163 2009 9 2.82424e+01 1.59782e+01 204 2009 10 2.03087e+01 1.23976e+01 634 2009 11 1.21074e+01 4.98102e+00 449 2009 12 1.48858e+01 1.03293e+01 369 2010 1 6.20648e+00 1.38404e+00 539 2010 2 4.10644e+00 7.09104e-01 378 2010 3 4.83637e+00 1.15535e+00 518 2010 4 1.11697e+01 3.85453e+00 310 2010 5 1.17301e+01 6.22423e+00 320 2010 6 1.46894e+01 5.04156e+00 397 2010 7 1.70032e+01 8.63754e+00 122 2010 8 1.50525e+01 3.83315e+00 162 2010 9 1.79824e+01 4.18030e+00 63 2010 10 1.56405e+01 1.13830e+01 693 2010 11 1.05190e+01 3.96724e+00 714 2010 12 5.32872e+00 2.33326e+00 666 2011 1 4.58223e+00 8.75848e-01 434 2011 2 4.81894e+00 2.02859e+00 702 2011 3 5.03245e+00 1.33757e+00 777 2011 4 5.56442e+00 1.29017e+00 395 2011 5 6.46930e+00 1.34187e+00 250 2011 6 6.71261e+00 8.25058e-01 233 2011 7 1.03910e+01 9.45682e+00 189 2011 8 1.24944e+01 7.10523e+00 134 2011 9 1.08211e+01 4.20118e+00 275 2011 10 1.34757e+01 4.62754e+00 312 2011 11 9.20005e+00 1.98020e+00 542 2011 12 6.62126e+00 1.82996e+00 756 2012 1 5.26769e+00 9.51959e-01 719 2012 2 6.14447e+00 2.47429e+00 537 2012 3 7.31263e+00 1.50934e+00 503 2012 4 6.02599e+00 7.31826e-01 195 2012 5 6.76184e+00 1.03002e+00 284 2012 6 8.34299e+00 6.88079e-01 58 2012 7 7.04187e+00 1.02748e+00 98 2012 8 1.86004e+01 1.16815e+01 106 2012 9 1.90340e+01 6.46879e+00 228 2012 10 2.41898e+01 1.57759e+01 372 2012 11 8.42585e+00 1.59015e+00 495 2012 12 7.56111e+00 2.63744e+00 402 2013 1 8.65772e+00 2.43447e+00 625 2013 2 9.18266e+00 2.19452e+00 684 2013 3 6.15901e+00 2.16555e+00 535 2013 4 7.45988e+00 1.77255e+00 267 2013 5 8.06470e+00 2.07955e+00 324 2013 6 1.18006e+01 2.16313e+00 242 2013 7 1.97554e+01 6.22067e+00 94 2013 8 2.96673e+01 2.10568e+01 69 2013 9 2.98314e+01 1.70159e+01 94 2013 10 2.20398e+01 1.53998e+01 610 2013 11 1.07848e+01 3.10643e+00 183 2013 12 1.01185e+01 2.44310e+00 570 2014 1 6.43125e+00 1.45754e+00 609 2014 2 6.26262e+00 3.74119e+00 623 2014 3 4.98490e+00 6.58579e-01 591 2014 4 5.62487e+00 1.12810e+00 341 2014 5 7.45869e+00 8.09552e-01 173 2014 6 9.47794e+00 1.55251e+00 161 2014 7 9.87813e+00 3.71632e+00 189 2014 8 1.58237e+01 8.71356e+00 210 2014 9 1.78132e+01 3.68208e+00 244 2014 10 2.54997e+01 1.46857e+01 561 2014 11 1.81554e+01 1.20462e+01 620 2014 12 1.50806e+01 1.19105e+01 560 2015 1 6.25162e+00 1.91653e+00 537 2015 2 4.90866e+00 1.13912e+00 505 2015 3 8.22101e+00 3.35869e+00 636 2015 4 1.02449e+01 3.68623e+00 120 2015 5 7.73198e+00 2.36757e+00 284 2015 6 1.02372e+01 1.83537e+00 198 2015 7 8.55138e+00 1.67400e+00 80 2015 8 1.65222e+01 9.25138e+00 228 2015 9 2.23619e+01 1.45954e+01 223 2015 10 2.02635e+01 1.42444e+01 281 2015 11 1.51716e+01 5.05296e+00 568 2015 12 2.86071e+01 1.74442e+01 222 2016 1 1.21660e+01 6.85978e+00 264 2016 2 1.36207e+01 8.68357e+00 477 2016 3 9.97054e+00 2.92354e+00 340 2016 4 9.16354e+00 4.08333e+00 308 2016 5 1.11376e+01 3.75102e+00 280 2016 6 1.75087e+01 9.89663e+00 189 2016 7 1.70252e+01 3.30955e+00 207 2016 8 3.09912e+01 2.07671e+01 121 2016 9 1.81231e+01 1.57920e+01 326 2016 10 1.44897e+01 4.12467e+00 279 2016 11 1.28504e+01 4.89066e+00 550 2016 12 1.16794e+01 5.26954e+00 527 2017 1 7.34797e+00 2.41814e+00 503 2017 2 4.67312e+00 9.55658e-01 619 2017 3 5.50538e+00 1.38922e+00 507 2017 4 5.65858e+00 7.91383e-01 249 2017 5 6.34510e+00 1.22838e+00 341 2017 6 1.28418e+01 3.91996e+00 144 2017 7 1.55412e+01 2.79057e+00 57 2017 8 2.34591e+01 1.60942e+01 167 2017 9 3.08795e+01 1.90817e+01 295 2017 10 2.46507e+01 1.99627e+01 90 2017 11 1.85227e+01 1.24614e+01 502 2017 12 1.50493e+01 1.10708e+01 963 2018 1 9.34366e+00 3.41300e+00 425 2018 2 1.04992e+01 2.93011e+00 573 2018 3 7.31602e+00 2.70015e+00 778 2018 4 7.81270e+00 1.59016e+00 517 2018 5 7.53855e+00 1.04399e+00 75 2018 6 9.42209e+00 2.02537e+00 246 2018 7 2.64775e+01 2.07028e+01 170 2018 8 3.97331e+01 1.74900e+01 39 2018 9 3.70679e+01 1.92724e+01 187 2018 10 2.00454e+01 1.45041e+01 183 2018 11 1.73996e+01 9.00446e+00 316 2018 12 1.24827e+01 5.96829e+00 512 2019 1 9.74289e+00 6.25625e+00 706 2019 2 7.85999e+00 2.22268e+00 367 2019 3 5.59666e+00 1.74691e+00 437 2019 4 9.58900e+00 4.46291e+00 352 2019 5 1.06977e+01 4.85758e+00 298 2019 6 8.35159e+00 2.04399e+00 303 2019 7 1.23259e+01 3.94448e+00 332 2019 8 1.26163e+01 9.27495e+00 190 2019 9 1.80027e+01 7.01466e+00 346 2019 10 1.38846e+01 4.39961e+00 386 2019 11 1.81008e+01 1.11862e+01 479 2019 12 7.54839e+00 2.59791e+00 475 2020 1 7.87680e+00 2.34459e+00 700 2020 2 7.00428e+00 2.96236e+00 367 2020 3 7.77898e+00 2.79805e+00 367 2020 4 7.67174e+00 1.94238e+00 242 2020 5 8.12052e+00 1.11722e+00 321 2020 6 1.20692e+01 2.09246e+00 252 2020 7 1.52427e+01 2.12300e+00 64 2020 8 9.14555e+00 1.92507e+00 217 2020 9 2.90632e+01 2.15383e+01 148 2020 10 2.09172e+01 5.20122e+00 65 2020 11 1.89233e+01 1.72240e+01 196 2020 12 1.58812e+01 1.13983e+01 437 2021 1 1.67796e+01 8.50417e+00 579 2021 2 8.71457e+00 2.55052e+00 658 2021 3 1.41940e+01 5.96585e+00 405 2021 4 1.35905e+01 9.65699e+00 404 2021 5 1.12893e+01 3.16803e+00 242 2021 6 9.79730e+00 1.30571e+00 118 2021 7 1.48746e+01 1.55587e+00 124 2021 8 3.38448e+01 2.20692e+01 65 2021 9 3.86567e+01 2.18156e+01 107 2021 10 2.36312e+01 8.87687e+00 512 2021 11 1.64348e+01 6.17270e+00 519 2021 12 1.40720e+01 7.81720e+00 779 2022 1 7.38750e+00 3.79770e+00 666 2022 2 6.39517e+00 2.62854e+00 552 2022 3 7.83418e+00 3.05137e+00 738 2022 4 8.02820e+00 1.51216e+00 62 2022 5 8.19261e+00 2.98373e+00 409 2022 6 1.29019e+01 5.28166e+00 172 2022 7 1.56392e+01 3.70667e+00 175 2022 8 1.75932e+01 2.73581e+00 262 2022 9 2.06997e+01 1.35385e+01 248 2022 10 1.40594e+01 7.47448e+00 516 2022 11 1.25468e+01 5.15935e+00 514 2022 12 1.02507e+01 5.05530e+00 613 2023 1 9.51640e+00 8.12479e+00 895 2023 2 8.94964e+00 1.99560e+00 1084 2023 3 6.85645e+00 2.32724e+00 883 2023 4 7.90571e+00 1.68301e+00 390 2023 5 7.47466e+00 2.28303e+00 598 2023 6 2.08510e+01 1.25892e+01 188 2023 7 1.49193e+01 3.15336e+00 192 2023 8 8.77664e+00 6.67298e+00 184 2023 9 1.46888e+01 8.92664e+00 431 2023 10 1.82606e+01 1.05478e+01 495 2023 11 1.71643e+01 8.94772e+00 722 2023 12 9.78239e+00 8.41020e+00 390 2024 1 1.50637e+01 3.54563e+00 107 2024 2 6.08916e+00 1.85687e+00 799 2024 3 1.17878e+01 6.24726e+00 503 2024 4 nan nan 0