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 4.45001e+00 1.05778e+00 347 2002 8 4.36912e+00 1.80076e+00 558 2002 9 3.40504e+00 1.14829e+00 576 2002 10 4.25221e+00 6.69556e-01 660 2002 11 2.67300e+00 1.13257e+00 320 2002 12 4.03602e+00 8.94461e-01 681 2003 1 4.71175e+00 5.94067e-01 685 2003 2 4.29090e+00 6.93513e-01 575 2003 3 4.22042e+00 8.66118e-01 640 2003 4 2.76255e+00 8.45977e-01 414 2003 5 3.08223e+00 7.41620e-01 239 2003 6 3.24751e+00 1.85393e+00 318 2003 7 3.84218e+00 1.54909e+00 596 2003 8 5.00696e+00 1.74054e+00 621 2003 9 4.64162e+00 1.55291e+00 724 2003 10 2.34668e+00 1.17039e+00 441 2003 11 2.43865e+00 1.51114e+00 702 2003 12 2.90053e+00 1.06819e+00 651 2004 1 5.31965e+00 4.59211e-01 893 2004 2 5.41046e+00 5.26622e-01 784 2004 3 4.36097e+00 1.11968e+00 512 2004 4 3.07619e+00 2.42374e+00 407 2004 5 4.22773e+00 1.74810e+00 254 2004 6 5.26162e+00 1.27150e+00 558 2004 7 5.66917e+00 1.12272e+00 132 2004 8 4.96066e+00 1.14564e+00 633 2004 9 5.02885e+00 1.28832e+00 671 2004 10 3.75036e+00 1.22297e+00 630 2004 11 3.82962e+00 5.88626e-01 774 2004 12 4.21872e+00 7.84860e-01 449 2005 1 2.83420e+00 1.25777e+00 640 2005 2 3.79966e+00 1.02019e+00 576 2005 3 3.85009e+00 1.29344e+00 860 2005 4 2.45958e+00 1.17946e+00 704 2005 5 3.01484e+00 1.45847e+00 341 2005 6 4.11982e+00 2.65839e+00 457 2005 7 3.92255e+00 8.62539e-01 380 2005 8 5.61466e+00 9.69795e-01 718 2005 9 3.38045e+00 9.33118e-01 864 2005 10 3.62448e+00 1.10799e+00 462 2005 11 2.97776e+00 8.78986e-01 643 2005 12 4.12429e+00 4.59334e-01 576 2006 1 4.69723e+00 1.17854e+00 826 2006 2 4.07085e+00 9.86936e-01 647 2006 3 4.10555e+00 9.08589e-01 802 2006 4 3.61708e+00 1.83870e+00 552 2006 5 2.90252e+00 2.35331e+00 192 2006 6 4.52524e+00 1.19781e+00 244 2006 7 3.21371e+00 1.73443e+00 237 2006 8 4.59188e+00 1.49875e+00 845 2006 9 3.84419e+00 1.41151e+00 512 2006 10 3.75934e+00 1.27652e+00 762 2006 11 3.62466e+00 1.29482e+00 606 2006 12 3.93909e+00 7.12216e-01 532 2007 1 5.22784e+00 1.05745e+00 512 2007 2 5.82884e+00 1.27893e+00 761 2007 3 4.11967e+00 1.38465e+00 704 2007 4 1.88654e+00 4.37654e-01 481 2007 5 2.86509e+00 1.32502e+00 511 2007 6 3.36700e+00 1.07959e+00 194 2007 7 6.18155e+00 1.70592e+00 517 2007 8 4.60901e+00 1.03671e+00 448 2007 9 4.41921e+00 1.44596e+00 960 2007 10 2.52287e+00 7.94955e-01 552 2007 11 3.44630e+00 6.56303e-01 640 2007 12 4.61434e+00 4.61807e-01 336 2008 1 4.49408e+00 1.01692e+00 551 2008 2 4.78266e+00 1.03119e+00 544 2008 3 4.45345e+00 1.12292e+00 754 2008 4 3.09844e+00 1.44240e+00 568 2008 5 3.01890e+00 1.58604e+00 262 2008 6 5.07645e+00 1.45573e+00 438 2008 7 4.87720e+00 1.27263e+00 504 2008 8 4.20224e+00 1.95399e+00 958 2008 9 4.18434e+00 1.58262e+00 842 2008 10 3.13493e+00 8.09620e-01 832 2008 11 3.57319e+00 7.87715e-01 580 2008 12 4.29650e+00 3.74006e-01 384 2009 1 6.19676e+00 6.80534e-01 1092 2009 2 6.64933e+00 8.28545e-01 634 2009 3 5.53965e+00 1.22489e+00 640 2009 4 3.03218e+00 1.55910e+00 473 2009 5 3.68386e+00 6.20033e-01 296 2009 6 5.65202e+00 1.36419e+00 278 2009 7 5.04900e+00 8.50699e-01 480 2009 8 5.26658e+00 8.94829e-01 473 2009 9 3.42960e+00 1.62937e+00 707 2009 10 4.41919e+00 1.59683e+00 517 2009 11 3.16369e+00 7.37516e-01 488 2009 12 3.74584e+00 9.45595e-01 499 2010 1 4.88300e+00 1.04782e+00 768 2010 2 4.42959e+00 6.82952e-01 576 2010 3 2.48642e+00 5.52963e-01 640 2010 4 1.85013e+00 7.17429e-01 592 2010 5 3.99371e+00 2.05645e+00 742 2010 6 5.46079e+00 1.52126e+00 525 2010 7 5.12639e+00 1.51785e+00 591 2010 8 4.52616e+00 1.46791e+00 844 2010 9 4.32596e+00 1.22235e+00 844 2010 10 3.00674e+00 8.09049e-01 722 2010 11 2.74889e+00 6.78489e-01 576 2010 12 3.59427e+00 7.63615e-01 306 2011 1 4.51252e+00 1.48672e+00 636 2011 2 5.41978e+00 2.66442e-01 520 2011 3 3.93012e+00 1.56865e+00 718 2011 4 3.32321e+00 1.35472e+00 319 2011 5 3.29073e+00 1.06382e+00 226 2011 6 4.65547e+00 1.77965e+00 291 2011 7 4.80743e+00 1.84292e+00 601 2011 8 6.16126e+00 1.76137e+00 783 2011 9 4.42447e+00 1.50232e+00 407 2011 10 3.45833e+00 7.94203e-01 446 2011 11 3.17242e+00 1.04890e+00 768 2011 12 3.77743e+00 8.56372e-01 512 2012 1 4.64316e+00 1.02718e+00 756 2012 2 5.35689e+00 8.42722e-01 684 2012 3 3.32570e+00 1.00975e+00 832 2012 4 4.62085e+00 1.33673e+00 545 2012 5 3.61539e+00 1.80652e+00 289 2012 6 3.48791e+00 1.69675e+00 512 2012 7 4.71144e+00 8.04536e-01 659 2012 8 3.75849e+00 1.39406e+00 687 2012 9 4.11620e+00 1.76326e+00 832 2012 10 3.61177e+00 1.40555e+00 482 2012 11 3.07687e+00 8.93672e-01 527 2012 12 3.55394e+00 1.20347e+00 364 2013 1 4.27495e+00 2.93066e-01 563 2013 2 3.13740e+00 1.03139e+00 558 2013 3 3.99885e+00 1.81112e+00 285 2013 4 4.49645e+00 1.25913e+00 906 2013 5 4.75376e+00 1.03305e+00 316 2013 6 3.69830e+00 9.86784e-01 384 2013 7 4.95962e+00 8.70718e-01 440 2013 8 3.81133e+00 1.80336e+00 844 2013 9 4.00080e+00 8.22471e-01 1024 2013 10 3.44152e+00 1.25927e+00 526 2013 11 2.42452e+00 8.05430e-01 923 2013 12 4.51290e+00 8.75087e-01 533 2014 1 4.02443e+00 1.26616e+00 519 2014 2 5.36045e+00 6.45685e-01 644 2014 3 5.30249e+00 9.43709e-01 512 2014 4 3.80485e+00 9.60346e-01 396 2014 5 3.11060e+00 7.46489e-01 320 2014 6 4.67322e+00 2.02792e+00 527 2014 7 4.53960e+00 2.15094e+00 344 2014 8 4.46763e+00 1.04663e+00 960 2014 9 3.74346e+00 1.31031e+00 909 2014 10 3.80348e+00 1.35591e+00 530 2014 11 3.73274e+00 6.99476e-01 320 2014 12 4.31283e+00 1.02339e+00 241 2015 1 4.49087e+00 1.22505e+00 540 2015 2 3.76907e+00 1.69521e+00 522 2015 3 5.11286e+00 8.07053e-01 744 2015 4 6.48729e+00 7.49764e-01 578 2015 5 4.20484e+00 1.85840e+00 510 2015 6 6.14385e+00 7.58564e-01 451 2015 7 3.99717e+00 2.26799e+00 461 2015 8 5.47652e+00 1.17820e+00 704 2015 9 4.96904e+00 1.56307e+00 793 2015 10 2.99794e+00 8.54337e-01 766 2015 11 2.74089e+00 5.98876e-01 779 2015 12 2.84247e+00 4.82801e-01 323 2016 1 3.53864e+00 8.47246e-01 450 2016 2 3.89357e+00 9.53998e-01 576 2016 3 4.33189e+00 1.22843e+00 666 2016 4 3.73814e+00 1.19279e+00 823 2016 5 4.77665e+00 9.51266e-01 270 2016 6 5.40764e+00 1.07640e+00 577 2016 7 5.23964e+00 1.57802e+00 589 2016 8 4.63851e+00 1.10217e+00 961 2016 9 3.22584e+00 1.25470e+00 619 2016 10 2.98639e+00 9.61758e-01 599 2016 11 2.76697e+00 7.93621e-01 768 2016 12 2.34076e+00 7.44464e-01 531 2017 1 4.61334e+00 1.10364e+00 576 2017 2 4.42367e+00 1.16441e+00 618 2017 3 4.42867e+00 8.22989e-01 960 2017 4 4.54260e+00 7.74012e-01 512 2017 5 3.46671e+00 1.18390e+00 327 2017 6 4.99160e+00 4.02024e+00 441 2017 7 5.63788e+00 2.13815e+00 688 2017 8 4.07090e+00 1.40254e+00 601 2017 9 3.60623e+00 9.53802e-01 702 2017 10 2.28451e+00 8.85284e-01 647 2017 11 2.79350e+00 9.63592e-01 640 2017 12 4.76786e+00 1.05098e+00 388 2018 1 4.70254e+00 6.32451e-01 640 2018 2 5.01793e+00 8.37505e-01 441 2018 3 3.35271e+00 8.47210e-01 444 2018 4 4.78866e+00 1.29446e+00 640 2018 5 2.58571e+00 1.64554e+00 375 2018 6 4.24990e+00 1.67003e+00 527 2018 7 4.19869e+00 1.23709e+00 775 2018 8 4.36738e+00 1.51248e+00 661 2018 9 4.72874e+00 1.65123e+00 404 2018 10 3.19071e+00 1.31772e+00 635 2018 11 3.69521e+00 5.45866e-01 523 2018 12 4.08821e+00 6.40794e-01 975 2019 1 4.71667e+00 1.13642e+00 779 2019 2 4.70267e+00 1.66623e+00 506 2019 3 6.47007e+00 5.12151e-01 949 2019 4 3.59096e+00 1.85496e+00 507 2019 5 3.75616e+00 1.88008e+00 174 2019 6 3.30964e+00 1.83836e+00 314 2019 7 4.24021e+00 1.44118e+00 801 2019 8 4.42573e+00 1.38888e+00 546 2019 9 3.22506e+00 1.37751e+00 871 2019 10 2.18581e+00 6.93668e-01 376 2019 11 3.13067e+00 5.70703e-01 713 2019 12 4.45634e+00 7.63985e-01 509 2020 1 4.52420e+00 7.98937e-01 798 2020 2 4.48189e+00 9.26320e-01 564 2020 3 4.43893e+00 9.54446e-01 704 2020 4 3.41201e+00 1.29157e+00 304 2020 5 4.01943e+00 1.98802e+00 577 2020 6 4.56519e+00 1.12325e+00 318 2020 7 4.67532e+00 6.57569e-01 561 2020 8 4.19565e+00 4.43586e-01 320 2020 9 2.87099e+00 1.81625e+00 395 2020 10 4.13432e+00 1.62707e+00 638 2020 11 2.67968e+00 1.42801e+00 524 2020 12 2.76664e+00 6.86847e-01 384 2021 1 3.38819e+00 1.02361e+00 448 2021 2 4.47469e+00 7.30742e-01 461 2021 3 3.63899e+00 1.10900e+00 1147 2021 4 5.09645e+00 9.15086e-01 769 2021 5 2.74458e+00 1.53375e+00 534 2021 6 4.90666e+00 1.46887e+00 512 2021 7 2.33583e+00 6.52333e-01 278 2021 8 4.09263e+00 1.81097e+00 406 2021 9 3.83714e+00 1.55716e+00 785 2021 10 2.71761e+00 1.24199e+00 598 2021 11 2.20580e+00 1.11145e+00 842 2021 12 3.34632e+00 8.46032e-01 320 2022 1 4.68225e+00 1.30155e+00 569 2022 2 5.22509e+00 6.32374e-01 803 2022 3 4.86630e+00 1.68151e+00 640 2022 4 3.28588e+00 6.67401e-01 249 2022 5 3.48592e+00 1.36589e+00 256 2022 6 4.73441e+00 1.24756e+00 559 2022 7 4.78938e+00 1.28044e+00 961 2022 8 5.19789e+00 1.00970e+00 801 2022 9 3.66081e+00 1.63546e+00 756 2022 10 2.46799e+00 1.16865e+00 774 2022 11 3.11117e+00 1.23340e+00 979 2022 12 3.34165e+00 1.14764e+00 578 2023 1 3.35255e+00 1.17062e+00 371 2023 2 4.98421e+00 1.17687e+00 357 2023 3 5.20505e+00 1.16784e+00 557 2023 4 4.32614e+00 1.90401e+00 497 2023 5 3.79604e+00 2.57242e+00 463 2023 6 4.51688e+00 9.20598e-01 448 2023 7 3.45056e+00 1.71469e+00 620 2023 8 3.39383e+00 9.30684e-01 771 2023 9 3.64844e+00 1.43966e+00 435 2023 10 3.37217e+00 1.57857e+00 796 2023 11 1.98548e+00 1.23187e+00 661 2023 12 2.56680e+00 8.93649e-01 384 2024 1 3.09453e+00 1.30054e+00 445 2024 2 3.69458e+00 1.13344e+00 848 2024 3 3.52471e+00 6.58631e-01 531 2024 4 nan nan 0