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 1.22553e+01 9.91697e+00 216 2002 8 1.50364e+01 1.34583e+01 335 2002 9 1.30950e+01 1.16980e+01 416 2002 10 6.48398e+00 2.38599e+00 942 2002 11 5.43505e+00 1.79182e+00 703 2002 12 4.85686e+00 1.72218e+00 471 2003 1 4.14923e+00 1.05240e+00 722 2003 2 2.65594e+00 4.62460e-01 410 2003 3 9.70740e+00 9.99173e+00 251 2003 4 7.25068e+00 6.17874e+00 443 2003 5 5.52380e+00 1.98009e+00 447 2003 6 3.45103e+00 7.51117e-01 122 2003 7 8.94916e+00 1.09893e+01 195 2003 8 1.33991e+01 2.64113e+01 137 2003 9 4.63239e+00 2.44524e+00 144 2003 10 9.83273e+00 8.44538e+00 686 2003 11 3.24608e+00 1.96741e+00 704 2003 12 2.98378e+00 6.26844e-01 685 2004 1 2.81613e+00 1.14413e+00 784 2004 2 3.58883e+00 1.02473e+00 567 2004 3 2.71269e+00 1.05110e+00 663 2004 4 1.93346e+00 4.25553e-01 235 2004 5 2.52780e+00 7.57212e-01 462 2004 6 2.66269e+00 9.32345e-01 403 2004 7 4.71814e+00 3.59622e+00 430 2004 8 1.13951e+01 5.99540e+00 462 2004 9 1.06759e+01 4.85567e+00 168 2004 10 7.91591e+00 5.47561e+00 342 2004 11 9.07130e+00 1.31261e+01 681 2004 12 4.28982e+00 3.14727e+00 318 2005 1 3.27141e+00 1.06160e+00 884 2005 2 1.49442e+01 1.79559e+01 576 2005 3 1.28830e+01 9.80056e+00 334 2005 4 3.54080e+00 6.86668e-01 352 2005 5 3.41037e+00 9.95877e-01 265 2005 6 9.48875e+00 8.24325e+00 278 2005 7 1.26407e+01 1.81644e+01 265 2005 8 1.26762e+01 1.43064e+01 531 2005 9 1.32867e+01 8.72007e+00 440 2005 10 5.60758e+00 3.47129e+00 391 2005 11 7.42326e+00 6.80974e+00 761 2005 12 4.09615e+00 8.62621e-01 711 2006 1 3.69167e+00 1.05582e+00 387 2006 2 2.62201e+00 3.85768e-01 500 2006 3 2.07264e+00 4.81818e-01 846 2006 4 1.40318e+00 4.07508e-01 446 2006 5 1.35296e+00 3.36866e-01 439 2006 6 2.57746e+00 8.45079e-01 400 2006 7 6.78314e+00 6.02146e+00 388 2006 8 1.13692e+01 1.26445e+01 189 2006 9 1.44657e+01 1.50995e+01 375 2006 10 1.03681e+01 8.61007e+00 605 2006 11 6.22745e+00 2.76279e+00 525 2006 12 2.76321e+00 4.99873e-01 320 2007 1 3.31134e+00 1.09308e+00 479 2007 2 2.36559e+00 1.06864e+00 558 2007 3 1.38133e+00 3.99159e-01 469 2007 4 1.61290e+00 3.24586e-01 422 2007 5 1.49140e+00 2.28803e-01 281 2007 6 1.78753e+00 4.48699e-01 250 2007 7 3.84071e+00 1.43101e+00 270 2007 8 9.45856e+00 1.30479e+01 461 2007 9 1.67702e+01 9.12137e+00 671 2007 10 1.06995e+01 4.88984e+00 495 2007 11 2.65149e+00 8.20716e-01 830 2007 12 2.06284e+00 3.02409e-01 817 2008 1 1.78517e+00 4.84632e-01 732 2008 2 2.07498e+00 4.65068e-01 514 2008 3 1.88684e+00 2.97434e-01 441 2008 4 2.15454e+00 7.01665e-01 471 2008 5 2.17795e+00 6.46368e-01 553 2008 6 2.79798e+00 5.33868e-01 377 2008 7 5.43471e+00 5.46987e+00 312 2008 8 6.35108e+00 1.74536e+00 143 2008 9 1.60633e+01 1.23246e+01 456 2008 10 7.21707e+00 6.56677e+00 881 2008 11 3.54286e+00 1.33454e+00 965 2008 12 2.83105e+00 5.49827e-01 961 2009 1 2.39270e+00 3.59067e-01 684 2009 2 1.87161e+00 2.99198e-01 664 2009 3 2.09564e+00 5.36653e-01 708 2009 4 2.38280e+00 6.41888e-01 323 2009 5 4.34775e+00 1.70270e+00 405 2009 6 2.84057e+00 3.86940e-01 170 2009 7 5.52350e+00 1.67380e+00 203 2009 8 8.53929e+00 5.75773e+00 351 2009 9 1.43780e+01 1.34969e+01 643 2009 10 9.49310e+00 6.04562e+00 845 2009 11 3.67848e+00 1.16260e+00 558 2009 12 5.13806e+00 1.65258e+00 397 2010 1 2.75738e+00 3.35938e-01 427 2010 2 2.22988e+00 2.62326e-01 255 2010 3 2.36215e+00 2.53919e-01 359 2010 4 7.98577e+00 6.12450e+00 309 2010 5 2.77256e+00 5.80041e-01 508 2010 6 3.33197e+00 7.24541e-01 368 2010 7 3.25099e+00 1.01412e+00 258 2010 8 8.71008e+00 3.19090e+00 333 2010 9 1.03509e+01 1.26184e+01 467 2010 10 3.02202e+00 1.09068e+00 900 2010 11 2.80838e+00 6.06439e-01 1062 2010 12 2.46510e+00 2.12317e-01 575 2011 1 2.38401e+00 2.02338e-01 380 2011 2 1.90970e+00 4.39222e-01 695 2011 3 1.45701e+00 3.98685e-01 898 2011 4 2.25934e+00 7.59932e-01 542 2011 5 3.58759e+00 1.17298e+00 499 2011 6 2.45750e+00 5.55903e-01 434 2011 7 5.49383e+00 1.71022e+00 344 2011 8 2.66755e+00 1.10729e+00 35 2011 9 8.74431e+00 3.35492e+00 382 2011 10 7.63787e+00 5.44994e+00 378 2011 11 3.68939e+00 1.22845e+00 843 2011 12 2.53445e+00 6.02356e-01 1065 2012 1 2.02594e+00 2.32158e-01 771 2012 2 1.70876e+00 4.41118e-01 471 2012 3 2.54768e+00 5.67449e-01 748 2012 4 1.84423e+00 5.22920e-01 356 2012 5 2.54365e+00 5.34577e-01 378 2012 6 2.65715e+00 3.04467e-01 84 2012 7 5.52465e+00 2.48958e+00 154 2012 8 9.80422e+00 6.45760e+00 187 2012 9 1.02424e+01 9.76091e+00 264 2012 10 2.51543e+01 2.18241e+01 341 2012 11 3.75219e+00 1.97172e+00 853 2012 12 5.26523e+00 2.52631e+00 413 2013 1 8.09673e+00 4.19995e+00 775 2013 2 6.23746e+00 2.50443e+00 798 2013 3 3.03095e+00 7.05675e-01 544 2013 4 3.06359e+00 7.03435e-01 415 2013 5 2.67404e+00 5.57743e-01 432 2013 6 5.88839e+00 3.66756e+00 360 2013 7 9.78938e+00 1.35891e+01 249 2013 8 4.52812e+00 4.65941e+00 178 2013 9 1.40929e+01 1.40371e+01 168 2013 10 7.90437e+00 8.30984e+00 713 2013 11 4.67172e+00 2.77710e+00 373 2013 12 3.48125e+00 1.14178e+00 762 2014 1 2.45758e+00 3.86427e-01 494 2014 2 2.78912e+00 7.50928e-01 648 2014 3 2.32320e+00 3.27336e-01 555 2014 4 1.70598e+00 2.40247e-01 287 2014 5 2.64093e+00 6.95955e-01 433 2014 6 2.41787e+00 5.21873e-01 353 2014 7 6.38553e+00 3.82020e+00 223 2014 8 9.36016e+00 6.60723e+00 444 2014 9 1.31533e+01 9.88836e+00 305 2014 10 1.64328e+01 1.61766e+01 681 2014 11 4.03313e+00 1.39940e+00 750 2014 12 3.33421e+00 9.43710e-01 844 2015 1 2.91951e+00 1.33616e+00 420 2015 2 2.43048e+00 2.84333e-01 719 2015 3 2.87858e+00 1.08099e+00 1011 2015 4 2.64103e+00 1.00234e+00 241 2015 5 2.22022e+00 4.04974e-01 582 2015 6 4.05098e+00 1.14670e+00 434 2015 7 6.04131e+00 2.33298e+00 256 2015 8 9.03992e+00 3.12085e+00 388 2015 9 1.17554e+01 3.00703e+00 45 2015 10 1.46212e+01 1.04000e+01 463 2015 11 1.04941e+01 1.10534e+01 745 2015 12 5.61703e+00 1.33662e+00 256 2016 1 6.49578e+00 4.36475e+00 316 2016 2 7.18856e+00 2.85550e+00 374 2016 3 4.72274e+00 1.28085e+00 266 2016 4 4.34143e+00 9.81575e-01 324 2016 5 2.92734e+00 8.29355e-01 588 2016 6 6.01721e+00 3.70216e+00 401 2016 7 7.84661e+00 4.05309e+00 288 2016 8 9.60196e+00 6.89976e+00 221 2016 9 1.60888e+01 1.72107e+01 392 2016 10 1.11736e+01 9.97530e+00 600 2016 11 8.99761e+00 4.35606e+00 651 2016 12 4.89272e+00 4.07489e+00 820 2017 1 2.72643e+00 6.09989e-01 521 2017 2 3.13744e+00 5.50563e-01 873 2017 3 2.05163e+00 2.89452e-01 609 2017 4 2.63505e+00 6.97448e-01 273 2017 5 3.94690e+00 9.07998e-01 347 2017 6 6.83442e+00 3.00092e+00 168 2017 7 5.87980e+00 2.23161e+00 236 2017 8 1.25249e+01 1.54113e+01 493 2017 9 1.25623e+01 5.46637e+00 292 2017 10 5.23985e+00 3.40378e+00 425 2017 11 6.02136e+00 3.84256e+00 926 2017 12 5.65024e+00 4.54218e+00 745 2018 1 2.77402e+00 4.28201e-01 716 2018 2 4.53339e+00 1.47870e+00 716 2018 3 3.07501e+00 8.49527e-01 718 2018 4 2.53618e+00 4.89229e-01 656 2018 5 1.92725e+00 5.68127e-01 251 2018 6 9.66803e+00 1.04883e+01 306 2018 7 1.36656e+01 7.05476e+00 264 2018 8 4.33198e+00 6.01612e+00 356 2018 9 1.58822e+01 1.45035e+01 653 2018 10 1.70284e+01 1.66506e+01 508 2018 11 1.47340e+01 7.89742e+00 315 2018 12 4.99407e+00 1.14939e+00 380 2019 1 4.87095e+00 2.26448e+00 635 2019 2 3.53033e+00 7.58719e-01 561 2019 3 2.35388e+00 6.31082e-01 571 2019 4 3.02742e+00 5.98587e-01 334 2019 5 3.68857e+00 9.49699e-01 519 2019 6 3.70041e+00 1.37006e+00 282 2019 7 5.24760e+00 2.42211e+00 460 2019 8 4.41756e+00 1.87850e+00 128 2019 9 5.83559e+00 3.66919e+00 545 2019 10 6.92961e+00 3.29923e+00 665 2019 11 1.34218e+01 1.69426e+01 519 2019 12 2.76894e+00 5.69923e-01 464 2020 1 2.70300e+00 7.75982e-01 626 2020 2 2.09444e+00 2.38107e-01 472 2020 3 2.04167e+00 8.48398e-01 538 2020 4 2.19135e+00 8.21158e-01 229 2020 5 2.42282e+00 7.22182e-01 504 2020 6 4.04376e+00 8.75431e-01 392 2020 7 6.58794e+00 4.96479e+00 201 2020 8 7.64086e+00 2.90964e+00 373 2020 9 9.32670e+00 7.86163e+00 350 2020 10 1.64203e+01 1.16716e+01 371 2020 11 1.07326e+01 9.03179e+00 686 2020 12 3.93438e+00 2.47007e+00 461 2021 1 4.21991e+00 1.95782e+00 459 2021 2 3.18429e+00 3.13198e-01 588 2021 3 3.04300e+00 1.26407e+00 408 2021 4 3.11486e+00 7.83545e-01 474 2021 5 4.80407e+00 1.70181e+00 548 2021 6 3.45649e+00 4.01676e-01 200 2021 7 6.77504e+00 1.48492e+00 254 2021 8 1.46473e+01 1.45177e+01 256 2021 9 2.55663e+01 1.80914e+01 102 2021 10 1.86634e+01 1.88591e+01 667 2021 11 4.51608e+00 1.85526e+00 598 2021 12 4.30440e+00 1.98986e+00 841 2022 1 3.07059e+00 8.85040e-01 542 2022 2 2.94710e+00 4.88486e-01 697 2022 3 2.44371e+00 4.91139e-01 649 2022 4 1.80290e+00 3.66401e-01 247 2022 5 1.88948e+00 6.67411e-01 551 2022 6 2.70831e+00 2.88145e-01 159 2022 7 7.00031e+00 4.69900e+00 506 2022 8 9.80701e+00 2.24186e+00 283 2022 9 6.99158e+00 7.59018e+00 387 2022 10 8.96603e+00 8.18893e+00 668 2022 11 1.96537e+01 1.77821e+01 488 2022 12 8.16767e+00 5.86195e+00 752 2023 1 5.12044e+00 2.46714e+00 821 2023 2 8.48518e+00 4.43524e+00 1019 2023 3 4.08455e+00 1.33837e+00 1016 2023 4 3.72111e+00 1.19672e+00 512 2023 5 3.30902e+00 2.56160e+00 604 2023 6 4.41879e+00 2.84276e+00 322 2023 7 8.69414e+00 3.17490e+00 419 2023 8 6.20826e+00 2.41557e+00 441 2023 9 7.94086e+00 2.80980e+00 703 2023 10 6.50251e+00 4.27590e+00 769 2023 11 4.42233e+00 2.04415e+00 835 2023 12 2.91497e+00 5.35819e-01 332 2024 1 4.27200e+00 1.88042e+00 433 2024 2 2.51380e+00 3.81313e-01 779 2024 3 4.05774e+00 1.68349e+00 525 2024 4 nan nan 0