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 2.50814e+00 9.26076e-01 222 2002 8 3.33722e+00 8.49774e-01 226 2002 9 3.11278e+00 9.16207e-01 170 2002 10 3.46871e+00 1.54911e+00 685 2002 11 3.85904e+00 1.31196e+00 723 2002 12 3.72241e+00 1.35692e+00 639 2003 1 5.39979e+00 1.39776e+00 950 2003 2 3.70549e+00 9.03962e-01 512 2003 3 1.64737e+01 1.06025e+01 198 2003 4 2.28276e+01 1.17586e+01 164 2003 5 7.65726e+00 2.01370e+00 90 2003 6 4.31006e+00 2.82106e+00 122 2003 7 7.84156e+00 3.99458e+00 127 2003 8 1.36361e+01 8.53193e+00 214 2003 9 5.01425e+00 2.84187e+00 321 2003 10 5.36290e+00 1.91229e+00 733 2003 11 3.90133e+00 1.05967e+00 962 2003 12 3.83108e+00 9.17616e-01 717 2004 1 3.78573e+00 9.69280e-01 708 2004 2 3.97141e+00 1.28812e+00 262 2004 3 6.44418e+00 2.76033e+00 550 2004 4 4.26428e+00 1.49535e+00 371 2004 5 3.08550e+00 5.85856e-01 476 2004 6 2.47006e+00 7.47004e-01 294 2004 7 3.76247e+00 8.42078e-01 347 2004 8 3.50416e+00 8.84522e-01 341 2004 9 5.36737e+00 4.94186e+00 157 2004 10 1.07953e+01 7.10252e+00 72 2004 11 2.06134e+01 9.93669e+00 174 2004 12 1.36233e+01 1.05586e+01 274 2005 1 1.00033e+01 6.91550e+00 818 2005 2 7.28505e+00 2.32498e+00 607 2005 3 5.66595e+00 2.08399e+00 371 2005 4 8.17360e+00 4.62255e+00 355 2005 5 9.05941e+00 4.96947e+00 253 2005 6 1.00562e+01 6.85110e+00 313 2005 7 2.25477e+01 8.11070e+00 276 2005 8 1.36976e+01 5.75847e+00 189 2005 9 7.51235e+00 2.72048e+00 286 2005 10 4.85685e+00 1.70690e+00 703 2005 11 3.34296e+00 7.76325e-01 786 2005 12 3.70623e+00 1.68382e+00 862 2006 1 7.68800e+00 2.95304e+00 561 2006 2 9.65492e+00 5.87019e+00 406 2006 3 1.29009e+01 7.92557e+00 843 2006 4 4.71090e+00 1.93139e+00 337 2006 5 3.24984e+00 1.31420e+00 348 2006 6 3.30397e+00 9.42553e-01 332 2006 7 5.98764e+00 2.53657e+00 135 2006 8 3.67932e+00 6.90103e-01 128 2006 9 4.28652e+00 1.17356e+00 597 2006 10 3.56751e+00 1.46953e+00 698 2006 11 2.85201e+00 1.02731e+00 769 2006 12 1.68015e+00 3.68713e-01 389 2007 1 2.44602e+00 1.13435e+00 447 2007 2 2.75852e+00 1.92737e+00 671 2007 3 2.11507e+00 7.07765e-01 851 2007 4 2.74621e+00 1.08781e+00 533 2007 5 2.13993e+00 6.78304e-01 99 2007 6 2.08302e+00 5.64496e-01 211 2007 7 3.02602e+00 1.12316e+00 497 2007 8 3.92571e+00 5.46866e-01 385 2007 9 4.22091e+00 1.12592e+00 296 2007 10 2.43202e+00 1.45857e+00 507 2007 11 1.90197e+00 7.23755e-01 1015 2007 12 2.43531e+00 2.96963e+00 726 2008 1 2.82679e+00 2.29149e+00 536 2008 2 2.65207e+00 8.72970e-01 807 2008 3 5.00154e+00 3.44789e+00 580 2008 4 8.32864e+00 5.86309e+00 510 2008 5 6.05508e+00 2.19042e+00 390 2008 6 4.33721e+00 1.12834e+00 192 2008 7 3.90749e+00 1.09825e+00 327 2008 8 5.73691e+00 5.28662e+00 235 2008 9 1.29025e+01 1.34552e+01 258 2008 10 4.42032e+00 1.50900e+00 813 2008 11 2.93458e+00 1.59037e+00 971 2008 12 5.50334e+00 2.77618e+00 719 2009 1 4.87698e+00 3.47822e+00 637 2009 2 3.52739e+00 1.52445e+00 898 2009 3 2.96876e+00 1.73362e+00 745 2009 4 5.01303e+00 2.60622e+00 583 2009 5 8.42337e+00 5.66957e+00 122 2009 6 3.54481e+00 3.64844e-01 66 2009 7 3.92390e+00 2.75229e+00 148 2009 8 6.63622e+00 3.24178e+00 507 2009 9 5.90027e+00 2.26268e+00 463 2009 10 3.43435e+00 1.21281e+00 702 2009 11 2.29801e+00 1.23497e+00 564 2009 12 2.62248e+00 1.13357e+00 192 2010 1 4.28514e+00 2.20269e+00 833 2010 2 1.32658e+01 6.85630e+00 591 2010 3 1.50248e+01 6.76134e+00 793 2010 4 1.09380e+01 8.96835e+00 365 2010 5 7.10864e+00 3.80927e+00 345 2010 6 4.81839e+00 1.87736e+00 507 2010 7 5.62532e+00 1.45177e+00 155 2010 8 4.35118e+00 8.48658e-01 116 2010 9 4.23062e+00 1.23806e+00 393 2010 10 3.42345e+00 1.87118e+00 1379 2010 11 2.73154e+00 2.54403e+00 893 2010 12 2.59360e+00 1.01758e+00 743 2011 1 2.47053e+00 1.38596e+00 735 2011 2 2.82163e+00 9.17650e-01 728 2011 3 2.49508e+00 1.27751e+00 767 2011 4 2.88187e+00 8.73180e-01 667 2011 5 2.36612e+00 1.24886e+00 620 2011 6 2.65493e+00 7.02235e-01 219 2011 7 3.83489e+00 1.23640e+00 253 2011 8 2.90908e+00 9.96831e-01 503 2011 9 2.81106e+00 9.61164e-01 600 2011 10 2.51024e+00 1.04630e+00 928 2011 11 1.99703e+00 8.55975e-01 977 2011 12 2.16100e+00 1.03739e+00 889 2012 1 2.17377e+00 1.15795e+00 967 2012 2 2.18500e+00 8.87583e-01 192 2012 3 2.77085e+00 1.90338e+00 736 2012 4 2.22530e+00 1.06506e+00 625 2012 5 2.36266e+00 6.75892e-01 384 2012 6 4.16299e+00 4.64999e-01 64 2012 7 8.51758e+00 2.22457e+00 81 2012 8 1.72285e+01 8.80969e+00 194 2012 9 1.55266e+01 9.26270e+00 335 2012 10 1.07343e+01 3.54113e+00 469 2012 11 5.87221e+00 4.17849e+00 746 2012 12 6.00559e+00 3.75995e+00 423 2013 1 4.25891e+00 3.52824e+00 539 2013 2 3.63719e+00 1.18592e+00 498 2013 3 3.31382e+00 1.16945e+00 620 2013 4 9.10756e+00 5.19823e+00 419 2013 5 5.42261e+00 1.49046e+00 359 2013 6 1.10775e+01 6.46055e+00 347 2013 7 2.68003e+01 8.92745e+00 60 2013 8 2.53761e+01 9.72764e+00 133 2013 9 1.77863e+01 9.71576e+00 493 2013 10 7.15105e+00 3.06506e+00 644 2013 11 4.99441e+00 2.00367e+00 411 2013 12 3.55279e+00 1.30845e+00 581 2014 1 4.10563e+00 1.61061e+00 448 2014 2 5.42776e+00 4.97328e+00 555 2014 3 1.63295e+01 9.17261e+00 523 2014 4 1.76517e+01 1.03317e+01 202 2014 5 2.85161e+01 1.12460e+01 82 2014 6 1.57120e+01 8.78654e+00 290 2014 7 9.18995e+00 5.04694e+00 512 2014 8 5.41201e+00 2.60529e+00 274 2014 9 4.79464e+00 1.83640e+00 243 2014 10 4.85508e+00 1.70014e+00 1282 2014 11 3.59884e+00 1.94511e+00 893 2014 12 1.94945e+00 1.39383e+00 433 2015 1 2.53687e+00 1.39330e+00 684 2015 2 3.52274e+00 9.76313e-01 740 2015 3 9.58396e+00 4.47765e+00 409 2015 4 7.29364e+00 2.83650e+00 186 2015 5 5.39538e+00 1.09446e+00 333 2015 6 4.49023e+00 5.79182e-01 149 2015 7 4.81407e+00 2.04318e+00 143 2015 8 1.19767e+01 8.00150e+00 313 2015 9 9.27740e+00 5.15728e+00 221 2015 10 4.26900e+00 1.30077e+00 532 2015 11 5.94435e+00 2.44082e+00 545 2015 12 3.72339e+00 2.23441e+00 608 2016 1 3.85015e+00 1.77253e+00 409 2016 2 5.71735e+00 3.75213e+00 1024 2016 3 6.05442e+00 3.94534e+00 765 2016 4 4.81347e+00 1.39090e+00 384 2016 5 6.12455e+00 2.49090e+00 477 2016 6 3.52948e+00 1.10253e+00 515 2016 7 5.28261e+00 2.11548e+00 801 2016 8 8.08253e+00 5.93179e+00 443 2016 9 5.73990e+00 2.02772e+00 599 2016 10 5.44884e+00 3.33137e+00 666 2016 11 2.02700e+00 6.55929e-01 728 2016 12 2.18690e+00 7.48426e-01 602 2017 1 3.26754e+00 2.56942e+00 518 2017 2 2.96507e+00 1.40812e+00 924 2017 3 3.29535e+00 1.80944e+00 791 2017 4 2.97377e+00 6.30683e-01 567 2017 5 3.34547e+00 5.74177e-01 418 2017 6 4.54498e+00 7.75524e-01 166 2017 7 5.41863e+00 1.22727e+00 142 2017 8 5.88777e+00 1.27938e+00 355 2017 9 6.98710e+00 8.44447e+00 283 2017 10 1.22276e+01 7.11988e+00 499 2017 11 4.17557e+00 2.75316e+00 1138 2017 12 2.54571e+00 7.39358e-01 627 2018 1 3.03239e+00 1.02166e+00 585 2018 2 3.97105e+00 1.39184e+00 640 2018 3 3.87453e+00 1.81010e+00 687 2018 4 4.71613e+00 2.82669e+00 429 2018 5 5.69422e+00 1.22388e+00 384 2018 6 5.27610e+00 1.43668e+00 311 2018 7 1.04237e+01 7.94977e+00 148 2018 8 2.04692e+01 1.18155e+01 186 2018 9 7.59236e+00 2.88355e+00 659 2018 10 6.33063e+00 2.72658e+00 766 2018 11 6.40986e+00 2.41444e+00 149 2018 12 9.35685e+00 6.29954e+00 637 2019 1 1.73722e+01 8.95381e+00 476 2019 2 1.98138e+01 9.89258e+00 238 2019 3 9.91567e+00 7.65256e+00 604 2019 4 6.52194e+00 3.21517e+00 407 2019 5 4.52772e+00 1.07609e+00 591 2019 6 4.92698e+00 7.18240e-01 65 2019 7 3.34174e+00 9.98744e-01 125 2019 8 1.17634e+01 1.12698e+01 346 2019 9 4.83240e+00 2.07733e+00 408 2019 10 5.17006e+00 2.11651e+00 456 2019 11 2.61815e+00 1.04611e+00 612 2019 12 4.12296e+00 2.41547e+00 441 2020 1 3.03739e+00 1.11643e+00 541 2020 2 3.18149e+00 1.02195e+00 555 2020 3 4.17866e+00 1.69279e+00 736 2020 4 4.68797e+00 2.05901e+00 491 2020 5 4.14705e+00 4.55244e+00 574 2020 6 5.20218e+00 3.00239e+00 441 2020 7 6.57482e+00 1.87294e+00 133 2020 8 5.95860e+00 2.10999e+00 166 2020 9 7.35760e+00 1.40444e+00 171 2020 10 8.13146e+00 4.39536e+00 314 2020 11 5.41979e+00 2.30144e+00 675 2020 12 3.44911e+00 1.83700e+00 544 2021 1 5.94395e+00 2.53636e+00 415 2021 2 7.91121e+00 2.70820e+00 402 2021 3 7.93606e+00 3.74240e+00 405 2021 4 8.12112e+00 4.88694e+00 459 2021 5 5.83554e+00 1.37642e+00 384 2021 6 5.56032e+00 2.19025e+00 165 2021 7 1.11930e+01 1.21593e+01 91 2021 8 8.17702e+00 5.58899e+00 69 2021 9 1.68675e+01 9.26139e+00 528 2021 10 7.67860e+00 5.94999e+00 430 2021 11 6.11604e+00 2.58967e+00 954 2021 12 5.01673e+00 1.62142e+00 608 2022 1 4.66550e+00 1.60085e+00 656 2022 2 3.87703e+00 1.75410e+00 711 2022 3 6.01611e+00 6.16275e+00 758 2022 4 8.04861e+00 1.10261e+00 64 2022 5 1.02982e+01 7.46924e+00 442 2022 6 4.89221e+00 1.37309e+00 320 2022 7 9.23595e+00 4.52864e+00 115 2022 8 5.42733e+00 1.99523e+00 406 2022 9 3.69005e+00 1.65593e+00 311 2022 10 3.35521e+00 2.20965e+00 1182 2022 11 3.59848e+00 1.78151e+00 369 2022 12 3.67710e+00 2.24697e+00 755 2023 1 3.32558e+00 2.04387e+00 761 2023 2 2.92962e+00 9.78630e-01 656 2023 3 7.77796e+00 6.50881e+00 784 2023 4 5.50378e+00 2.11116e+00 389 2023 5 4.74588e+00 3.04129e+00 262 2023 6 3.35565e+00 1.85482e+00 263 2023 7 1.02943e+01 6.14043e+00 469 2023 8 6.91434e+00 4.09275e+00 448 2023 9 8.51857e+00 5.59620e+00 448 2023 10 5.26766e+00 2.87739e+00 389 2023 11 4.06045e+00 3.69990e+00 696 2023 12 8.10628e+00 4.42927e+00 367 2024 1 1.88873e+01 6.95286e+00 276 2024 2 1.32836e+01 7.28774e+00 607 2024 3 1.27974e+01 8.36926e+00 243 2024 4 nan nan 0