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 1.49525e+00 2.42980e-01 176 2002 8 1.50497e+00 1.06902e-01 101 2002 9 3.09719e+00 4.56776e-01 320 2002 10 3.06188e+00 3.86584e-01 1127 2002 11 3.06379e+00 4.12346e-01 818 2002 12 2.39828e+00 4.32460e-01 783 2003 1 2.43455e+00 5.36610e-01 690 2003 2 2.37428e+00 4.27987e-01 701 2003 3 2.67623e+00 5.09041e-01 671 2003 4 1.78456e+00 1.54418e-01 95 2003 5 2.64715e+00 8.09713e-01 567 2003 6 1.54456e+00 9.51399e-02 24 2003 7 1.59324e+00 1.07147e-01 67 2003 8 1.90851e+00 2.00408e-01 143 2003 9 1.87094e+00 2.41709e-01 104 2003 10 3.43904e+00 6.47941e-01 940 2003 11 2.80974e+00 9.13454e-01 896 2003 12 2.16054e+00 4.37688e-01 640 2004 1 1.65926e+00 2.62913e-01 633 2004 2 1.34712e+00 6.19478e-02 239 2004 3 1.29866e+00 2.36904e-01 256 2004 4 1.02396e+00 4.22179e-02 64 2004 5 1.13090e+00 1.20223e-01 93 2004 6 1.93753e+00 4.85218e-01 308 2004 7 3.07826e+00 6.74693e-01 279 2004 8 3.22347e+00 6.87804e-01 677 2004 9 3.53322e+00 9.46097e-01 314 2004 10 2.38550e+00 3.87887e-01 753 2004 11 2.89347e+00 1.01576e+00 944 2004 12 4.67635e+00 2.42486e+00 768 2005 1 2.22991e+00 2.83542e-01 691 2005 2 1.73619e+00 4.18695e-01 296 2005 3 1.37609e+00 2.86629e-01 296 2005 4 1.92399e+00 1.00522e+00 360 2005 5 1.47368e+00 3.07844e-01 350 2005 6 2.92307e+00 2.02138e-01 143 2005 7 2.36645e+00 5.85037e-01 386 2005 8 2.78406e+00 5.07572e-01 291 2005 9 3.30355e+00 4.36504e+00 391 2005 10 4.00311e+00 1.53196e+00 576 2005 11 3.49365e+00 1.40808e+00 724 2005 12 2.40351e+00 2.04631e-01 796 2006 1 2.45385e+00 2.05316e-01 639 2006 2 2.31679e+00 3.10497e-01 462 2006 3 1.83044e+00 1.57180e-01 633 2006 4 1.13192e+00 2.15392e-01 84 2006 5 1.03554e+00 2.79120e-01 154 2006 6 1.95337e+00 4.30236e-01 193 2006 7 2.41721e+00 1.59060e-01 200 2006 8 2.18593e+00 1.76741e-01 210 2006 9 2.09219e+00 2.88819e-01 215 2006 10 2.86571e+00 7.55796e-01 959 2006 11 3.39941e+00 1.07580e+00 764 2006 12 2.70167e+00 7.55594e-01 512 2007 1 1.92692e+00 1.65486e-01 826 2007 2 1.72080e+00 1.76016e-01 239 2007 3 1.64331e+00 2.86721e-01 63 2007 4 7.85605e-01 1.85872e-02 9 2007 5 1.06928e+00 1.20485e-01 204 2007 6 1.72961e+00 1.36694e-01 384 2007 7 2.07378e+00 1.86424e-01 232 2007 8 2.21227e+00 3.31580e-01 480 2007 9 2.38437e+00 3.15705e-01 318 2007 10 2.83422e+00 4.64005e-01 625 2007 11 2.59170e+00 7.01728e-01 1131 2007 12 2.31855e+00 7.98633e-01 1140 2008 1 1.74977e+00 1.24006e-01 77 2008 2 nan nan 0 2008 3 nan nan 0 2008 4 2.70121e+00 5.97022e-01 200 2008 5 3.17874e+00 6.17460e-01 293 2008 6 nan nan 0 2008 7 1.91597e+00 1.19719e-01 100 2008 8 3.03017e+00 7.34260e-01 424 2008 9 3.33093e+00 3.61433e-01 437 2008 10 2.88510e+00 4.82483e-01 425 2008 11 2.83738e+00 7.15566e-01 1217 2008 12 2.00284e+00 1.98063e-01 1132 2009 1 1.72460e+00 2.97469e-01 440 2009 2 1.99401e+00 2.19268e-01 287 2009 3 8.11510e-01 6.22266e-02 21 2009 4 1.13289e+00 2.55329e-01 287 2009 5 8.79950e-01 7.43989e-01 29 2009 6 2.49214e+00 1.00054e+00 183 2009 7 2.47630e+00 4.10106e-01 318 2009 8 2.01858e+00 1.91128e-01 361 2009 9 3.18705e+00 6.13200e-01 718 2009 10 3.00363e+00 1.04205e+00 749 2009 11 3.29416e+00 1.18305e+00 935 2009 12 2.01955e+00 3.65707e-01 558 2010 1 1.86064e+00 1.03608e-01 14 2010 2 1.98336e+00 1.82595e-02 64 2010 3 1.75926e+00 2.07036e-02 64 2010 4 nan nan 0 2010 5 1.22988e+00 3.98410e-01 170 2010 6 1.48257e+00 3.81689e-01 149 2010 7 2.24236e+00 4.21531e-01 174 2010 8 2.57871e+00 3.67326e-01 256 2010 9 1.44377e+00 4.30365e-02 34 2010 10 2.80468e+00 9.31167e-01 1030 2010 11 2.13731e+00 4.88369e-01 889 2010 12 1.94694e+00 2.00399e-01 393 2011 1 1.94793e+00 1.40918e-01 451 2011 2 1.46585e+00 7.91969e-04 14 2011 3 9.59508e-01 1.32874e-01 74 2011 4 9.27027e-01 1.83176e-01 364 2011 5 9.84698e-01 6.49102e-02 19 2011 6 2.10620e+00 3.21160e-01 265 2011 7 2.41791e+00 3.64443e-01 265 2011 8 4.06288e+00 1.80072e+00 387 2011 9 2.29218e+00 9.10977e-01 73 2011 10 2.53296e+00 5.07363e-01 315 2011 11 2.10777e+00 2.57888e-01 685 2011 12 3.76997e+00 6.61573e-01 1217 2012 1 2.43229e+00 6.40141e-01 769 2012 2 1.71959e+00 4.67903e-02 75 2012 3 1.08871e+00 1.35229e-02 64 2012 4 2.09074e+00 2.00380e-01 256 2012 5 1.54180e+00 1.01129e-01 105 2012 6 1.75917e+00 4.30605e-02 128 2012 7 1.66879e+00 9.72088e-02 130 2012 8 2.27442e+00 4.49126e-01 192 2012 9 3.48086e+00 5.85084e-01 517 2012 10 3.35877e+00 1.41255e+00 577 2012 11 4.07127e+00 9.74277e-01 799 2012 12 2.54154e+00 4.04820e-01 512 2013 1 2.29639e+00 6.64406e-01 1074 2013 2 1.93396e+00 3.51435e-01 558 2013 3 1.80298e+00 2.75489e-01 467 2013 4 1.73687e+00 3.06528e-01 467 2013 5 1.47480e+00 3.98313e-01 370 2013 6 nan nan 0 2013 7 nan nan 0 2013 8 nan nan 0 2013 9 2.02228e+00 3.16777e-02 64 2013 10 2.42765e+00 2.60146e-01 536 2013 11 2.57080e+00 3.31162e-01 392 2013 12 2.19501e+00 1.94461e-01 716 2014 1 2.02538e+00 3.88534e-01 303 2014 2 1.62692e+00 2.18600e-01 591 2014 3 1.00443e+00 2.70933e-02 60 2014 4 1.02545e+00 3.85422e-02 66 2014 5 1.90958e+00 3.91036e-01 98 2014 6 2.86394e+00 5.01195e-01 437 2014 7 2.21555e+00 2.12736e-01 271 2014 8 2.42028e+00 2.15706e-01 288 2014 9 2.03161e+00 2.50133e-01 235 2014 10 1.88340e+00 3.66714e-01 684 2014 11 3.92470e+00 2.10727e+00 589 2014 12 2.60527e+00 6.76593e-01 626 2015 1 1.69949e+00 2.60378e-01 507 2015 2 1.84284e+00 2.56275e-01 189 2015 3 1.65065e+00 1.41215e-01 292 2015 4 1.32952e+00 2.79336e-01 97 2015 5 1.74835e+00 3.07501e-01 212 2015 6 2.93903e+00 6.95964e-01 239 2015 7 2.93725e+00 9.09557e-01 157 2015 8 4.35904e+00 8.65587e-01 398 2015 9 2.48877e+00 6.86483e-01 400 2015 10 1.93370e+00 1.15158e-01 282 2015 11 1.59342e+00 5.05498e-01 803 2015 12 2.90221e+00 1.22778e+00 747 2016 1 1.96216e+00 6.21104e-01 380 2016 2 2.21741e+00 3.37692e-01 819 2016 3 2.14460e+00 2.52804e-01 323 2016 4 2.16425e+00 2.75188e-01 682 2016 5 1.83234e+00 4.24615e-01 525 2016 6 1.77627e+00 1.33512e-01 384 2016 7 1.67051e+00 2.59313e-01 259 2016 8 1.66866e+00 1.30117e-01 342 2016 9 3.28454e+00 6.62883e-01 582 2016 10 3.27811e+00 1.11368e+00 702 2016 11 2.30265e+00 4.49629e-01 1113 2016 12 1.82757e+00 2.68712e-01 844 2017 1 1.72033e+00 3.11171e-01 195 2017 2 1.40251e+00 5.30464e-02 91 2017 3 1.79783e+00 3.54509e-01 49 2017 4 8.00249e-01 2.45109e-01 108 2017 5 2.89676e+00 6.33592e-01 320 2017 6 1.99725e+00 3.98621e-02 64 2017 7 3.42376e+00 1.50310e+00 130 2017 8 2.27093e+00 8.66150e-01 193 2017 9 3.21984e+00 1.05456e+00 697 2017 10 3.27889e+00 4.19001e-01 479 2017 11 2.61679e+00 9.20759e-01 1216 2017 12 2.57741e+00 5.00253e-01 1216 2018 1 2.33907e+00 3.95045e-01 604 2018 2 1.73227e+00 3.34541e-01 805 2018 3 1.62186e+00 2.16389e-01 190 2018 4 1.70633e+00 2.80449e-01 237 2018 5 2.33162e+00 6.62506e-02 180 2018 6 1.43299e+00 6.55699e-02 11 2018 7 1.19662e+00 6.59959e-02 104 2018 8 1.36769e+00 2.28015e-02 55 2018 9 1.98629e+00 3.86544e-01 417 2018 10 2.34246e+00 8.25191e-01 921 2018 11 3.75834e+00 1.82132e+00 927 2018 12 4.10453e+00 1.42190e+00 842 2019 1 2.60100e+00 4.33695e-01 896 2019 2 2.29825e+00 4.33201e-01 1125 2019 3 1.82401e+00 3.11143e-01 739 2019 4 1.92614e+00 2.21516e-01 354 2019 5 8.41601e-01 2.16066e-01 16 2019 6 1.57295e+00 2.63625e-01 152 2019 7 1.54095e+00 1.48029e-01 125 2019 8 1.62192e+00 1.34629e-02 14 2019 9 2.21745e+00 3.65896e-01 398 2019 10 2.08333e+00 4.48685e-01 598 2019 11 2.99714e+00 1.40490e+00 936 2019 12 2.42982e+00 4.93274e-01 832 2020 1 2.37491e+00 7.18826e-01 797 2020 2 1.68297e+00 2.19821e-01 86 2020 3 1.00847e+00 2.25404e-02 25 2020 4 1.05983e+00 1.21069e-01 131 2020 5 1.83768e+00 2.40704e-01 306 2020 6 1.78096e+00 1.77889e-01 338 2020 7 1.76613e+00 2.48876e-01 241 2020 8 1.75045e+00 2.19797e-01 412 2020 9 1.84108e+00 4.74240e-01 302 2020 10 2.27552e+00 3.84142e-01 326 2020 11 2.72047e+00 3.80210e-01 669 2020 12 3.71060e+00 1.10151e+00 1150 2021 1 5.55550e+00 2.24182e+00 685 2021 2 2.50491e+00 5.05273e-01 908 2021 3 1.92338e+00 6.12430e-01 424 2021 4 1.39735e+00 9.97545e-02 66 2021 5 1.89702e+00 2.06150e-01 134 2021 6 1.66450e+00 2.46144e-01 123 2021 7 1.98981e+00 6.26937e-01 422 2021 8 3.07773e+00 5.09465e-01 257 2021 9 2.60208e+00 5.29735e-01 498 2021 10 2.44556e+00 6.62978e-01 678 2021 11 3.22447e+00 5.41662e-01 837 2021 12 2.77278e+00 5.46743e-01 1088 2022 1 2.04318e+00 4.25110e-01 707 2022 2 1.82541e+00 2.71820e-01 896 2022 3 1.77312e+00 4.16508e-01 765 2022 4 1.28192e+00 9.18026e-02 147 2022 5 1.37657e+00 3.29781e-01 325 2022 6 1.71391e+00 2.26620e-01 292 2022 7 1.70784e+00 1.69160e-01 302 2022 8 3.98386e+00 2.54335e+00 426 2022 9 2.14613e+00 2.60992e-01 344 2022 10 3.08814e+00 8.22377e-01 1093 2022 11 3.48207e+00 1.16771e+00 851 2022 12 3.05052e+00 8.22736e-01 954 2023 1 2.65288e+00 4.64993e-01 831 2023 2 3.06338e+00 5.23647e-01 1088 2023 3 2.00619e+00 2.65055e-01 668 2023 4 1.77803e+00 5.37533e-01 192 2023 5 1.46024e+00 3.21166e-01 125 2023 6 1.35240e+00 1.05595e-01 89 2023 7 1.99529e+00 3.30926e-01 250 2023 8 2.10763e+00 3.51243e-01 61 2023 9 2.04377e+00 6.43168e-01 77 2023 10 1.36522e+00 3.77914e-01 591 2023 11 1.65630e+00 3.03073e-01 477 2023 12 2.50868e+00 7.04364e-01 204 2024 1 nan nan 0 2024 2 1.78964e+00 2.16728e-01 468 2024 3 1.22926e+00 4.09364e-01 279 2024 4 nan nan 0