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 3.12415e+01 3.82602e+00 130 2002 8 4.01194e+01 1.83257e+01 211 2002 9 3.07339e+01 1.80176e+01 199 2002 10 2.77960e+01 1.17180e+01 617 2002 11 1.81993e+01 1.07380e+01 638 2002 12 1.82201e+01 9.69018e+00 444 2003 1 1.12461e+01 6.05455e+00 814 2003 2 2.14165e+01 7.92701e+00 559 2003 3 6.57352e+00 8.53447e+00 130 2003 4 5.05724e-04 2.42912e-03 59 2003 5 1.62393e+01 1.30091e+00 64 2003 6 5.41071e+01 0.00000e+00 6 2003 7 nan nan 0 2003 8 1.45826e+01 8.49083e+00 143 2003 9 2.59834e+01 1.47724e+01 200 2003 10 1.96774e+01 1.09952e+01 408 2003 11 2.53139e+01 1.06994e+01 872 2003 12 1.95541e+01 8.76805e+00 544 2004 1 2.11932e+01 7.40174e+00 631 2004 2 2.18412e+01 6.66432e+00 270 2004 3 1.66604e+01 9.31693e+00 538 2004 4 2.10698e+01 1.02944e+01 249 2004 5 2.84812e+01 9.41842e+00 308 2004 6 4.51395e+01 4.73221e+00 115 2004 7 2.99396e+01 1.34843e+01 173 2004 8 3.47771e+01 9.97755e+00 250 2004 9 2.23792e+01 6.36755e+00 92 2004 10 9.89299e+00 8.33652e+00 174 2004 11 1.13131e+01 8.07296e+00 105 2004 12 1.27228e+01 3.72232e+00 141 2005 1 8.62435e+00 6.34633e+00 427 2005 2 1.21450e+01 8.11365e+00 423 2005 3 1.28852e+01 6.70995e+00 449 2005 4 8.45726e+00 4.51050e+00 178 2005 5 1.02418e+01 1.66659e+01 92 2005 6 1.72956e+01 1.34449e+01 188 2005 7 4.82911e+00 3.47658e+00 104 2005 8 7.80699e+00 5.58895e+00 61 2005 9 1.76568e+01 7.66448e+00 198 2005 10 2.29904e+01 8.38842e+00 511 2005 11 2.37164e+01 9.23471e+00 717 2005 12 1.77306e+01 9.77575e+00 716 2006 1 1.13142e+01 5.92524e+00 384 2006 2 8.33887e+00 5.52405e+00 397 2006 3 7.41536e+00 5.74989e+00 787 2006 4 2.84129e+01 1.15665e+01 275 2006 5 3.36163e+01 5.39935e+00 189 2006 6 3.17305e+01 9.48285e+00 251 2006 7 2.45558e+01 1.06010e+01 76 2006 8 2.94386e+01 1.14013e+01 87 2006 9 2.80734e+01 9.18059e+00 438 2006 10 2.76698e+01 1.05263e+01 564 2006 11 2.83461e+01 1.16151e+01 592 2006 12 3.93717e+01 9.72633e+00 316 2007 1 2.54981e+01 1.10795e+01 405 2007 2 3.05127e+01 1.02511e+01 491 2007 3 3.44209e+01 9.37074e+00 645 2007 4 3.67478e+01 8.60601e+00 261 2007 5 4.14602e+01 4.30820e+00 64 2007 6 4.03511e+01 4.32693e+00 78 2007 7 3.30478e+01 1.08025e+01 399 2007 8 3.81321e+01 7.84997e+00 214 2007 9 3.74327e+01 8.62597e+00 191 2007 10 4.66898e+01 7.32542e+00 273 2007 11 3.83331e+01 1.18858e+01 729 2007 12 4.27505e+01 1.18492e+01 434 2008 1 3.07202e+01 1.09951e+01 263 2008 2 2.65955e+01 1.07513e+01 684 2008 3 2.17226e+01 7.64038e+00 498 2008 4 1.95383e+01 1.53483e+01 383 2008 5 2.04049e+01 1.06458e+01 234 2008 6 3.82702e+01 5.71108e+00 138 2008 7 3.12325e+01 1.37812e+01 163 2008 8 2.68895e+01 6.53720e+00 97 2008 9 2.42824e+01 1.47885e+01 167 2008 10 2.41274e+01 8.19767e+00 623 2008 11 3.01751e+01 1.09587e+01 722 2008 12 2.08970e+01 9.26350e+00 555 2009 1 1.90032e+01 8.48141e+00 534 2009 2 2.12596e+01 1.18343e+01 539 2009 3 3.09548e+01 1.12986e+01 618 2009 4 2.16431e+01 1.30111e+01 323 2009 5 1.64721e+01 5.87221e+00 96 2009 6 2.57273e+01 3.15143e+00 64 2009 7 3.30425e+01 4.66496e+00 64 2009 8 2.03986e+01 7.22821e+00 272 2009 9 2.35791e+01 1.01346e+01 358 2009 10 2.60380e+01 8.71012e+00 573 2009 11 3.37596e+01 1.17240e+01 341 2009 12 1.91277e+01 8.02845e+00 161 2010 1 1.72142e+01 7.28436e+00 574 2010 2 1.14652e+01 1.20229e+01 334 2010 3 3.20871e+00 2.56259e+00 409 2010 4 1.08101e+01 7.21789e+00 275 2010 5 1.69973e+01 7.34429e+00 277 2010 6 2.41212e+01 1.15316e+01 393 2010 7 2.21059e+01 3.39292e+00 136 2010 8 3.37171e+01 2.41595e+00 64 2010 9 3.03623e+01 1.89309e+01 279 2010 10 2.97912e+01 9.73730e+00 1110 2010 11 2.93346e+01 1.14824e+01 735 2010 12 2.34453e+01 1.11081e+01 508 2011 1 2.15603e+01 1.17792e+01 553 2011 2 2.50190e+01 9.97401e+00 582 2011 3 2.61992e+01 1.10676e+01 729 2011 4 2.79095e+01 8.38413e+00 565 2011 5 3.25649e+01 1.11866e+01 491 2011 6 3.45354e+01 1.08055e+01 150 2011 7 3.57072e+01 6.54518e+00 219 2011 8 3.31779e+01 8.81267e+00 172 2011 9 3.66593e+01 9.37461e+00 549 2011 10 2.99318e+01 9.70748e+00 782 2011 11 3.24998e+01 1.49103e+01 774 2011 12 3.18080e+01 1.24831e+01 731 2012 1 2.86996e+01 1.27990e+01 866 2012 2 2.65154e+01 1.45648e+01 192 2012 3 3.04014e+01 1.04896e+01 598 2012 4 3.46063e+01 9.31550e+00 431 2012 5 4.44730e+01 7.08074e+00 271 2012 6 3.27933e+01 2.73545e+00 6 2012 7 5.85374e+00 3.93670e+00 75 2012 8 2.81715e+00 2.79487e+00 70 2012 9 8.15573e+00 4.67465e+00 152 2012 10 8.73076e+00 5.67342e+00 273 2012 11 1.66001e+01 8.13256e+00 652 2012 12 2.35265e+01 1.03716e+01 131 2013 1 2.61774e+01 1.27536e+01 377 2013 2 1.59880e+01 8.02497e+00 224 2013 3 1.91313e+01 7.24511e+00 487 2013 4 1.30243e+01 8.92954e+00 265 2013 5 2.14516e+01 6.04379e+00 253 2013 6 1.56287e+01 1.15123e+01 313 2013 7 2.27497e+00 3.52536e+00 43 2013 8 1.86625e+00 2.73935e+00 100 2013 9 6.02564e+00 8.57656e+00 204 2013 10 1.66130e+01 7.22383e+00 455 2013 11 1.97555e+01 8.61091e+00 97 2013 12 2.20682e+01 1.12488e+01 484 2014 1 1.67032e+01 1.14104e+01 402 2014 2 2.02605e+01 9.79516e+00 493 2014 3 1.09871e+01 1.02043e+01 363 2014 4 7.05214e+00 6.60086e+00 242 2014 5 1.01813e+01 2.06579e+01 52 2014 6 8.83343e+00 8.01349e+00 150 2014 7 1.71524e+01 5.97012e+00 331 2014 8 1.70835e+01 5.55957e+00 96 2014 9 2.35478e+01 1.06533e+01 216 2014 10 2.16312e+01 1.01226e+01 1004 2014 11 2.00510e+01 1.06516e+01 726 2014 12 2.97629e+01 1.22778e+01 457 2015 1 2.88363e+01 1.72440e+01 538 2015 2 1.66739e+01 6.66088e+00 653 2015 3 1.51492e+01 6.01181e+00 280 2015 4 1.55494e+01 6.30370e+00 108 2015 5 2.46646e+01 7.38401e+00 273 2015 6 3.22874e+01 4.28260e+00 128 2015 7 2.27032e+01 4.00123e+00 25 2015 8 1.52314e+01 9.86068e+00 157 2015 9 2.22088e+01 6.62018e+00 98 2015 10 2.52029e+01 6.99817e+00 404 2015 11 1.84112e+01 9.71726e+00 400 2015 12 2.50303e+01 1.35090e+01 487 2016 1 1.53292e+01 7.51472e+00 353 2016 2 1.74992e+01 1.05141e+01 774 2016 3 1.49495e+01 9.54240e+00 596 2016 4 2.35417e+01 1.03432e+01 330 2016 5 2.09943e+01 9.50633e+00 197 2016 6 3.08747e+01 9.15001e+00 365 2016 7 2.52272e+01 8.88687e+00 478 2016 8 1.81149e+01 1.26398e+01 409 2016 9 1.71157e+01 1.11569e+01 406 2016 10 1.86847e+01 1.25920e+01 438 2016 11 3.30465e+01 1.13652e+01 619 2016 12 3.38169e+01 1.56108e+01 438 2017 1 2.65136e+01 1.73206e+01 349 2017 2 2.71019e+01 1.02599e+01 788 2017 3 2.92270e+01 1.09672e+01 548 2017 4 2.96171e+01 7.81394e+00 485 2017 5 2.75094e+01 9.58313e+00 220 2017 6 3.79938e+01 8.97523e+00 145 2017 7 3.35041e+01 1.03483e+01 72 2017 8 2.35166e+01 1.03975e+01 273 2017 9 2.93302e+01 9.80850e+00 422 2017 10 1.34873e+01 1.20416e+01 433 2017 11 2.30691e+01 1.00715e+01 793 2017 12 2.85196e+01 1.18344e+01 507 2018 1 2.10977e+01 1.26454e+01 503 2018 2 2.76222e+01 5.94449e+00 549 2018 3 2.23503e+01 1.14709e+01 597 2018 4 2.10198e+01 1.44464e+01 242 2018 5 2.43004e+01 6.02328e+00 314 2018 6 1.93838e+01 7.50234e+00 304 2018 7 1.48452e+01 5.66570e+00 79 2018 8 6.80920e+00 4.64379e+00 224 2018 9 1.85187e+01 6.57461e+00 418 2018 10 1.82129e+01 9.89090e+00 539 2018 11 1.50513e+01 5.84035e+00 123 2018 12 9.46637e+00 7.37430e+00 370 2019 1 5.17282e+00 3.27769e+00 221 2019 2 1.80516e+01 1.44393e+01 296 2019 3 1.31857e+01 1.03295e+01 549 2019 4 1.47712e+01 6.96203e+00 347 2019 5 2.79634e+01 7.56563e+00 336 2019 6 3.74866e+01 1.54072e+00 14 2019 7 3.26414e+01 3.33330e+00 38 2019 8 1.37802e+01 1.19596e+01 275 2019 9 2.60970e+01 2.03462e+01 239 2019 10 2.38558e+01 9.31214e+00 377 2019 11 2.85165e+01 1.14149e+01 543 2019 12 2.52077e+01 1.41355e+01 267 2020 1 2.25573e+01 8.68945e+00 375 2020 2 1.63020e+01 9.73740e+00 488 2020 3 2.34261e+01 6.64290e+00 585 2020 4 2.21384e+01 1.46150e+01 440 2020 5 2.43085e+01 8.83814e+00 298 2020 6 2.55109e+01 1.37178e+01 159 2020 7 1.21546e+01 7.43770e+00 23 2020 8 1.97986e+01 1.12076e+01 161 2020 9 1.19316e+01 3.79582e+00 128 2020 10 1.21895e+01 6.77572e+00 294 2020 11 2.02845e+01 9.17895e+00 375 2020 12 1.86671e+01 9.90018e+00 426 2021 1 1.23407e+01 9.61345e+00 419 2021 2 1.06086e+01 8.14544e+00 406 2021 3 1.48653e+01 6.30292e+00 293 2021 4 1.44388e+01 3.61421e+00 260 2021 5 2.18308e+01 9.36546e+00 384 2021 6 3.08157e+01 5.26248e+00 125 2021 7 1.85124e+01 9.79628e+00 67 2021 8 7.57082e+00 5.88686e+00 34 2021 9 9.29000e+00 7.57037e+00 256 2021 10 1.65784e+01 1.01345e+01 321 2021 11 1.25893e+01 7.60079e+00 722 2021 12 2.08078e+01 1.30004e+01 459 2022 1 1.34791e+01 5.01447e+00 416 2022 2 1.99177e+01 1.03133e+01 598 2022 3 2.01976e+01 1.44018e+01 637 2022 4 2.02358e+01 2.42586e+00 61 2022 5 1.82851e+01 7.01615e+00 313 2022 6 2.71733e+01 8.39853e+00 325 2022 7 3.01435e+01 1.83253e+01 81 2022 8 3.02543e+01 6.60688e+00 246 2022 9 2.67740e+01 8.99439e+00 255 2022 10 3.03680e+01 1.11292e+01 922 2022 11 2.99268e+01 1.31257e+01 415 2022 12 2.56774e+01 1.55488e+01 682 2023 1 3.10927e+01 7.86755e+00 707 2023 2 3.07771e+01 8.88212e+00 499 2023 3 2.52196e+01 1.22127e+01 707 2023 4 3.20360e+01 1.57845e+01 436 2023 5 2.92377e+01 1.18829e+01 230 2023 6 3.09070e+01 2.31879e+01 209 2023 7 8.71141e+00 1.71779e+01 181 2023 8 2.69036e+01 1.30673e+01 362 2023 9 1.83100e+01 8.22596e+00 162 2023 10 1.92215e+01 1.08332e+01 418 2023 11 2.57321e+01 1.14192e+01 603 2023 12 1.17882e+01 1.01189e+01 269 2024 1 5.29294e+00 6.63300e+00 219 2024 2 8.88289e+00 8.52588e+00 491 2024 3 1.10021e+01 7.41865e+00 160 2024 4 nan nan 0