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 1.33765e+01 7.38444e-01 103 2002 8 1.16350e+01 1.30095e+00 640 2002 9 9.63486e+00 1.92955e+00 654 2002 10 8.06673e+00 1.04575e+00 960 2002 11 6.93816e+00 1.77571e+00 567 2002 12 5.87403e+00 1.32147e+00 696 2003 1 7.68275e+00 1.51352e+00 843 2003 2 8.18163e+00 9.74348e-01 521 2003 3 8.12291e+00 1.18420e+00 256 2003 4 9.27919e+00 1.55342e+00 839 2003 5 1.28335e+01 9.18677e-01 610 2003 6 1.48781e+01 3.01943e+00 317 2003 7 1.36919e+01 2.93049e-01 266 2003 8 1.25455e+01 1.86330e+00 576 2003 9 1.05042e+01 1.92151e+00 411 2003 10 9.90337e+00 1.29679e+00 719 2003 11 7.92891e+00 2.66648e+00 998 2003 12 6.52786e+00 1.52187e+00 614 2004 1 9.87178e+00 9.65085e-01 960 2004 2 8.96049e+00 1.61757e+00 427 2004 3 1.27408e+01 9.55505e-01 981 2004 4 1.06589e+01 2.21927e+00 704 2004 5 1.40414e+01 1.77594e+00 876 2004 6 1.51254e+01 1.45813e+00 682 2004 7 1.32961e+01 2.70406e+00 491 2004 8 1.31415e+01 8.36596e-01 478 2004 9 7.75041e+00 3.32070e+00 537 2004 10 8.13378e+00 1.06563e+00 1073 2004 11 8.83119e+00 1.17655e+00 758 2004 12 6.58797e+00 1.84376e+00 386 2005 1 4.78664e+00 3.08022e+00 641 2005 2 9.38303e+00 1.75623e+00 742 2005 3 7.68180e+00 2.49589e+00 527 2005 4 1.00573e+01 1.38513e+00 817 2005 5 1.34413e+01 1.33656e+00 768 2005 6 1.21611e+01 1.06016e+00 268 2005 7 8.81770e+00 1.45534e+00 603 2005 8 8.42565e+00 6.57340e-01 548 2005 9 6.13208e+00 1.72378e+00 362 2005 10 4.62461e+00 1.15899e+00 768 2005 11 4.32035e+00 9.96773e-01 917 2005 12 6.09559e+00 6.52981e-01 832 2006 1 7.10757e+00 1.59984e+00 790 2006 2 8.45040e+00 2.31746e+00 752 2006 3 1.08681e+01 5.09655e-01 1152 2006 4 1.44718e+01 6.79270e-01 1086 2006 5 1.45156e+01 9.42395e-01 768 2006 6 1.39796e+01 2.07329e+00 757 2006 7 1.46032e+01 1.18748e+00 393 2006 8 1.35576e+01 6.12642e-01 314 2006 9 8.62575e+00 1.77268e+00 429 2006 10 9.02687e+00 7.06618e-01 1102 2006 11 9.26955e+00 1.70449e+00 928 2006 12 8.04109e+00 1.88028e+00 473 2007 1 1.01539e+01 1.45211e+00 568 2007 2 1.00118e+01 2.00388e+00 512 2007 3 1.29763e+01 1.32288e+00 977 2007 4 1.15081e+01 2.85536e+00 1023 2007 5 1.34427e+01 1.35166e+00 665 2007 6 1.46013e+01 1.41261e+00 512 2007 7 1.32645e+01 1.49042e+00 514 2007 8 1.37324e+01 1.07523e+00 700 2007 9 1.11023e+01 1.54988e+00 683 2007 10 8.53643e+00 1.57275e+00 896 2007 11 9.69632e+00 1.17264e+00 1146 2007 12 9.89281e+00 2.14567e+00 1040 2008 1 8.44342e+00 2.49176e+00 480 2008 2 1.16706e+01 1.74961e+00 939 2008 3 9.16591e+00 2.47177e+00 704 2008 4 1.26235e+01 1.01865e+00 708 2008 5 1.20434e+01 1.49498e+00 711 2008 6 1.52069e+01 9.52258e-01 768 2008 7 1.40780e+01 1.86189e+00 422 2008 8 1.33999e+01 1.85045e+00 323 2008 9 8.63538e+00 1.49074e+00 603 2008 10 8.90488e+00 1.32284e+00 902 2008 11 7.76764e+00 8.27373e-01 889 2008 12 7.43701e+00 2.12228e+00 1028 2009 1 8.24859e+00 1.66718e+00 768 2009 2 1.14491e+01 2.28042e+00 960 2009 3 1.03204e+01 2.27017e+00 1059 2009 4 1.16778e+01 1.15989e+00 692 2009 5 1.28431e+01 1.53887e+00 740 2009 6 1.42591e+01 1.06807e+00 367 2009 7 1.44400e+01 9.41035e-01 335 2009 8 1.35909e+01 1.36279e+00 702 2009 9 1.19871e+01 4.85100e-01 586 2009 10 1.01390e+01 1.71683e+00 888 2009 11 7.52112e+00 1.38852e+00 467 2009 12 5.48185e+00 7.38242e-01 195 2010 1 8.65285e+00 1.11233e+00 647 2010 2 8.05618e+00 1.96117e+00 465 2010 3 7.24274e+00 1.98629e+00 775 2010 4 1.00386e+01 1.49318e+00 920 2010 5 1.42205e+01 8.11750e-01 637 2010 6 1.45625e+01 5.97278e-01 749 2010 7 1.44634e+01 1.37264e+00 512 2010 8 1.36318e+01 8.27385e-01 512 2010 9 1.24819e+01 7.21188e-01 640 2010 10 1.13049e+01 6.60581e-01 1375 2010 11 9.37495e+00 1.00237e+00 1280 2010 12 6.04214e+00 1.69222e+00 1024 2011 1 9.16589e+00 9.85884e-01 641 2011 2 9.79069e+00 1.32272e+00 779 2011 3 1.12816e+01 9.70123e-01 1113 2011 4 1.26158e+01 1.26501e+00 1046 2011 5 7.86738e+00 1.13629e+00 1033 2011 6 1.23975e+01 1.98915e+00 640 2011 7 1.48811e+01 5.70813e-01 315 2011 8 1.33828e+01 1.60360e+00 408 2011 9 1.04832e+01 1.88059e+00 574 2011 10 8.72131e+00 1.71518e+00 896 2011 11 9.16134e+00 1.05231e+00 1215 2011 12 6.97817e+00 1.63338e+00 809 2012 1 8.94903e+00 1.69972e+00 1088 2012 2 1.01842e+01 1.84874e+00 402 2012 3 1.27933e+01 2.60479e+00 1239 2012 4 1.16287e+01 1.84036e+00 784 2012 5 1.36289e+01 4.23200e-01 662 2012 6 1.14210e+01 4.81185e+00 320 2012 7 1.18004e+01 1.49042e+00 338 2012 8 1.44356e+01 1.27171e+00 360 2012 9 1.17786e+01 9.21413e-01 320 2012 10 1.10050e+01 3.33743e+00 810 2012 11 7.81109e+00 8.69892e-01 982 2012 12 6.04437e+00 1.85568e+00 702 2013 1 8.07909e+00 1.86815e+00 960 2013 2 9.48637e+00 2.02211e+00 845 2013 3 9.76892e+00 1.50824e+00 798 2013 4 1.19821e+01 8.29542e-01 657 2013 5 1.22554e+01 9.69706e-01 726 2013 6 1.13763e+01 2.05229e+00 631 2013 7 1.16835e+01 4.37680e-01 259 2013 8 1.25632e+01 1.05056e+00 761 2013 9 9.99466e+00 1.21957e+00 908 2013 10 8.04508e+00 1.24986e+00 663 2013 11 9.32726e+00 7.85770e-01 260 2013 12 7.07822e+00 8.50604e-01 654 2014 1 6.28371e+00 1.56570e+00 691 2014 2 7.45447e+00 7.82242e-01 710 2014 3 8.73867e+00 4.73647e-01 704 2014 4 1.12397e+01 6.82945e-01 736 2014 5 1.11502e+01 1.42989e+00 840 2014 6 1.37262e+01 1.65538e+00 624 2014 7 1.27392e+01 5.54461e-01 444 2014 8 1.19942e+01 1.50883e+00 516 2014 9 9.97950e+00 1.38370e+00 356 2014 10 8.43364e+00 1.40966e+00 947 2014 11 7.30462e+00 1.23886e+00 984 2014 12 6.98263e+00 6.07660e-01 623 2015 1 6.40853e+00 1.45802e+00 586 2015 2 7.89262e+00 8.17141e-01 657 2015 3 1.23841e+01 1.55602e+00 1088 2015 4 1.35223e+01 7.21712e-01 620 2015 5 1.02749e+01 2.42349e+00 1033 2015 6 9.69497e+00 9.34156e-01 504 2015 7 1.15123e+01 8.15459e-01 264 2015 8 1.08226e+01 7.87440e-01 572 2015 9 8.82973e+00 2.25924e+00 564 2015 10 7.30405e+00 1.24858e+00 694 2015 11 8.17855e+00 1.06245e+00 1026 2015 12 9.24948e+00 1.67678e+00 640 2016 1 7.05545e+00 1.98535e+00 537 2016 2 7.20847e+00 3.47944e+00 1079 2016 3 1.05725e+01 2.61072e+00 576 2016 4 1.18285e+01 1.37523e+00 836 2016 5 1.14556e+01 2.02135e+00 881 2016 6 1.43167e+01 1.97858e+00 597 2016 7 1.44016e+01 9.29827e-01 390 2016 8 1.10884e+01 1.21365e+00 704 2016 9 1.04923e+01 1.75842e+00 938 2016 10 1.07691e+01 1.28028e+00 1112 2016 11 1.02572e+01 9.20729e-01 1280 2016 12 9.95819e+00 1.11405e+00 832 2017 1 8.18927e+00 2.82752e+00 960 2017 2 9.40888e+00 1.43269e+00 1312 2017 3 1.13595e+01 1.39540e+00 1088 2017 4 1.20212e+01 1.09898e+00 847 2017 5 9.44706e+00 1.45175e+00 628 2017 6 1.21253e+01 1.60487e+00 384 2017 7 1.40772e+01 1.47835e+00 493 2017 8 1.27403e+01 7.13121e-01 464 2017 9 7.19795e+00 1.97223e+00 874 2017 10 6.16461e+00 1.02992e+00 731 2017 11 6.70392e+00 4.52795e-01 941 2017 12 7.40280e+00 1.11487e+00 785 2018 1 7.19663e+00 1.40318e+00 746 2018 2 1.31483e+01 1.24899e+00 878 2018 3 1.21981e+01 1.69824e+00 1146 2018 4 1.34951e+01 1.78585e+00 1150 2018 5 1.42925e+01 1.04983e+00 451 2018 6 1.54025e+01 1.47588e+00 504 2018 7 1.48661e+01 8.58631e-01 256 2018 8 1.35167e+01 9.41852e-01 604 2018 9 1.31059e+01 1.08772e+00 496 2018 10 1.05173e+01 2.13924e+00 1152 2018 11 8.73799e+00 1.33891e+00 474 2018 12 5.26812e+00 1.91365e+00 741 2019 1 6.65367e+00 1.30360e+00 768 2019 2 1.09091e+01 1.04227e+00 761 2019 3 1.17669e+01 1.36871e+00 960 2019 4 1.04498e+01 2.11842e+00 704 2019 5 1.40119e+01 1.29119e+00 866 2019 6 1.48438e+01 1.50174e+00 414 2019 7 1.34193e+01 6.98111e-01 436 2019 8 1.23566e+01 4.68879e-01 448 2019 9 1.26140e+01 7.80048e-01 785 2019 10 9.11916e+00 1.60732e+00 1083 2019 11 7.21649e+00 7.91467e-01 730 2019 12 7.73142e+00 1.17207e+00 410 2020 1 7.87338e+00 1.67924e+00 999 2020 2 9.07921e+00 1.84342e+00 768 2020 3 1.20831e+01 1.07941e+00 952 2020 4 1.37445e+01 9.43915e-01 448 2020 5 1.45201e+01 8.51189e-01 817 2020 6 1.38652e+01 1.13104e+00 512 2020 7 1.32492e+01 2.62906e+00 384 2020 8 1.33615e+01 1.21488e+00 430 2020 9 7.68956e+00 1.62072e+00 349 2020 10 6.63948e+00 6.71956e-01 795 2020 11 5.94512e+00 1.52614e+00 857 2020 12 6.53605e+00 1.57213e+00 795 2021 1 8.52764e+00 1.42925e+00 522 2021 2 1.00740e+01 2.23253e+00 697 2021 3 1.21255e+01 8.53948e-01 916 2021 4 1.19750e+01 1.30569e+00 940 2021 5 1.31227e+01 1.37229e+00 1017 2021 6 1.34506e+01 8.45894e-01 324 2021 7 1.22208e+01 1.80771e+00 526 2021 8 1.18036e+01 8.51283e-01 461 2021 9 1.05243e+01 8.04188e-01 533 2021 10 1.00123e+01 1.26569e+00 756 2021 11 6.33616e+00 8.80888e-01 875 2021 12 7.46678e+00 1.68655e+00 795 2022 1 5.46083e+00 1.66714e+00 969 2022 2 9.34185e+00 2.30364e+00 1024 2022 3 1.04959e+01 2.15785e+00 960 2022 4 1.32202e+01 1.49431e+00 384 2022 5 1.49084e+01 1.10952e+00 768 2022 6 1.46170e+01 1.28963e+00 558 2022 7 9.11507e+00 1.86315e+00 380 2022 8 7.53217e+00 2.10326e+00 579 2022 9 1.00506e+01 2.87055e+00 475 2022 10 7.57115e+00 1.49476e+00 1169 2022 11 8.59385e+00 1.17375e+00 758 2022 12 8.93734e+00 1.20865e+00 760 2023 1 9.83991e+00 1.56435e+00 820 2023 2 1.00694e+01 2.64428e+00 1048 2023 3 1.33530e+01 2.03703e+00 665 2023 4 1.43826e+01 1.44239e+00 343 2023 5 1.24499e+01 2.40343e+00 634 2023 6 1.34440e+01 1.08101e+00 448 2023 7 1.14062e+01 1.85426e+00 545 2023 8 8.44328e+00 1.49274e+00 353 2023 9 6.87823e+00 1.18727e+00 529 2023 10 8.21591e+00 8.76500e-01 672 2023 11 7.84086e+00 1.31962e+00 628 2023 12 7.20991e+00 2.66730e+00 132 2024 1 9.24541e+00 2.29820e+00 194 2024 2 9.05421e+00 2.06520e+00 704 2024 3 1.17534e+01 7.27620e-01 433 2024 4 nan nan 0