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 1.95784e+01 5.37324e+00 176 2002 8 2.23378e+01 2.42182e+00 101 2002 9 8.92784e+00 3.73031e+00 320 2002 10 1.02724e+01 3.56508e+00 1127 2002 11 3.90148e+00 3.54270e+00 818 2002 12 7.19861e+00 4.49747e+00 783 2003 1 5.74436e+00 5.12986e+00 690 2003 2 1.15724e+01 3.78730e+00 701 2003 3 1.09116e+01 3.07911e+00 671 2003 4 1.19326e+01 4.54403e+00 95 2003 5 1.49762e+01 3.86555e+00 567 2003 6 1.62737e+01 2.80386e+00 24 2003 7 1.99044e+01 1.17163e+00 67 2003 8 1.82511e+01 1.60049e+00 143 2003 9 1.78586e+01 2.47137e+00 104 2003 10 7.25101e+00 3.18510e+00 940 2003 11 7.34338e+00 4.04387e+00 896 2003 12 7.01879e+00 7.01016e+00 640 2004 1 9.21042e+00 8.47889e+00 633 2004 2 1.96451e+01 3.24832e+00 239 2004 3 1.86993e+01 9.20456e+00 256 2004 4 2.50095e+01 1.09345e+00 64 2004 5 2.29405e+01 1.92865e+00 93 2004 6 1.61875e+01 3.19612e+00 308 2004 7 1.23649e+01 3.04993e+00 279 2004 8 1.17353e+01 3.21777e+00 677 2004 9 4.44285e+00 3.40899e+00 314 2004 10 1.10677e+01 4.84723e+00 753 2004 11 8.71052e+00 4.06160e+00 944 2004 12 1.93991e+00 2.39664e+00 768 2005 1 5.88928e+00 4.52677e+00 691 2005 2 1.39586e+01 6.51584e+00 296 2005 3 2.10446e+01 6.21139e+00 296 2005 4 1.83676e+01 6.98960e+00 360 2005 5 2.21257e+01 2.37322e+00 350 2005 6 1.08216e+01 2.14858e+00 143 2005 7 1.35971e+01 3.43777e+00 386 2005 8 1.23887e+01 3.28638e+00 291 2005 9 1.22819e+01 5.03954e+00 390 2005 10 4.35001e+00 3.32983e+00 576 2005 11 1.39690e+00 1.16097e+00 724 2005 12 1.59835e+00 1.89406e+00 796 2006 1 8.30443e-01 7.81338e-01 639 2006 2 6.10525e+00 6.16215e+00 462 2006 3 4.45057e+00 2.18336e+00 633 2006 4 1.59130e+01 5.84375e+00 84 2006 5 2.71316e+01 5.04095e+00 154 2006 6 2.03545e+01 5.54762e+00 193 2006 7 1.47997e+01 2.43567e+00 200 2006 8 1.62364e+01 2.91802e+00 210 2006 9 1.38108e+01 1.52947e+00 215 2006 10 8.66304e+00 4.99257e+00 959 2006 11 5.77642e+00 3.82835e+00 764 2006 12 6.94382e+00 2.49540e+00 512 2007 1 1.08228e+01 6.32053e+00 826 2007 2 1.52960e+01 3.94513e+00 239 2007 3 1.25310e+01 2.60393e+00 63 2007 4 3.00744e+01 9.50244e-01 9 2007 5 2.34339e+01 2.23148e+00 204 2007 6 1.40437e+01 3.08953e+00 384 2007 7 1.62023e+01 4.81407e+00 232 2007 8 1.50528e+01 3.89549e+00 480 2007 9 1.37472e+01 2.60466e+00 318 2007 10 8.75329e+00 3.37027e+00 625 2007 11 7.79381e+00 4.80095e+00 1131 2007 12 1.25806e+01 6.36323e+00 1140 2008 1 1.69398e+01 1.08663e+00 77 2008 2 nan nan 0 2008 3 nan nan 0 2008 4 1.13417e+01 5.30621e+00 200 2008 5 1.02147e+01 4.63205e+00 293 2008 6 nan nan 0 2008 7 1.72448e+01 1.86476e+00 100 2008 8 1.20043e+01 6.51653e+00 424 2008 9 1.00276e+01 2.17236e+00 437 2008 10 1.03483e+01 2.32563e+00 425 2008 11 5.14364e+00 4.00262e+00 1217 2008 12 1.00484e+01 4.80966e+00 1132 2009 1 1.24448e+01 6.51520e+00 440 2009 2 4.91162e+00 7.54585e+00 287 2009 3 2.36214e+01 1.37370e+00 21 2009 4 2.44680e+01 3.14413e+00 287 2009 5 2.63618e+01 6.19432e+00 29 2009 6 1.31454e+01 2.81387e+00 183 2009 7 1.36824e+01 1.63848e+00 318 2009 8 1.41067e+01 4.79789e+00 361 2009 9 1.05571e+01 3.25526e+00 718 2009 10 7.85631e+00 5.53369e+00 749 2009 11 5.69174e+00 3.88134e+00 935 2009 12 8.19092e+00 5.98102e+00 558 2010 1 1.19857e+00 3.46783e-01 14 2010 2 8.63537e+00 5.65836e-01 64 2010 3 5.80055e+00 7.41079e-01 64 2010 4 nan nan 0 2010 5 2.40283e+01 5.05229e+00 170 2010 6 1.79830e+01 5.66823e+00 149 2010 7 1.51049e+01 3.72811e+00 174 2010 8 1.36531e+01 3.10278e+00 256 2010 9 2.06012e+01 5.00345e-01 34 2010 10 9.86089e+00 6.48924e+00 1030 2010 11 9.41932e+00 7.68814e+00 889 2010 12 5.40800e+00 6.67865e+00 393 2011 1 4.65749e+00 4.63113e+00 451 2011 2 2.39568e+00 2.79890e-02 14 2011 3 2.40406e+01 2.58871e+00 74 2011 4 2.53869e+01 4.70622e+00 364 2011 5 2.40772e+01 2.08028e+00 19 2011 6 1.60035e+01 2.90276e+00 265 2011 7 1.03054e+01 4.65298e+00 265 2011 8 8.54172e+00 5.75113e+00 387 2011 9 1.23959e+01 6.92749e+00 73 2011 10 5.44955e+00 5.61331e+00 315 2011 11 4.49199e+00 3.61066e+00 685 2011 12 3.88261e+00 2.25932e+00 1217 2012 1 8.45512e+00 5.56918e+00 769 2012 2 1.10689e+01 8.32290e-01 75 2012 3 2.38050e+01 1.51030e+00 64 2012 4 1.23443e+01 1.80256e+00 256 2012 5 1.64675e+01 1.89139e+00 105 2012 6 1.58953e+01 1.48629e+00 128 2012 7 1.74599e+01 1.13080e+00 130 2012 8 1.47974e+01 2.67832e+00 192 2012 9 9.60220e+00 2.23329e+00 517 2012 10 9.76550e+00 3.12828e+00 577 2012 11 3.82337e+00 2.52822e+00 799 2012 12 7.47218e+00 4.74416e+00 512 2013 1 8.97852e+00 4.38397e+00 1074 2013 2 9.60601e+00 7.72260e+00 558 2013 3 9.93920e+00 8.52638e+00 467 2013 4 1.58151e+01 6.23123e+00 467 2013 5 2.02033e+01 5.59220e+00 370 2013 6 nan nan 0 2013 7 nan nan 0 2013 8 nan nan 0 2013 9 1.56679e+01 3.03980e-01 64 2013 10 8.78259e+00 3.57565e+00 536 2013 11 9.37615e+00 5.07787e+00 392 2013 12 9.98031e+00 3.56032e+00 716 2014 1 6.81814e+00 6.53624e+00 303 2014 2 1.57647e+01 4.10790e+00 591 2014 3 2.44074e+01 7.00076e-01 60 2014 4 2.68044e+01 2.20015e+00 66 2014 5 1.45374e+01 4.31696e+00 98 2014 6 1.20948e+01 3.17093e+00 437 2014 7 1.36727e+01 4.40229e+00 271 2014 8 1.41654e+01 2.20618e+00 288 2014 9 1.40297e+01 4.84409e+00 235 2014 10 1.68194e+01 3.82580e+00 684 2014 11 4.93489e+00 7.41460e+00 589 2014 12 1.18988e+01 4.18869e+00 626 2015 1 1.11897e+01 7.89637e+00 507 2015 2 7.43042e+00 6.15318e+00 189 2015 3 1.47779e+01 6.26843e+00 292 2015 4 2.24833e+01 5.58911e+00 97 2015 5 1.86006e+01 4.07037e+00 212 2015 6 1.23139e+01 3.11316e+00 239 2015 7 1.29879e+01 5.15614e+00 157 2015 8 8.28792e+00 2.27357e+00 398 2015 9 1.22207e+01 2.66346e+00 400 2015 10 1.69707e+01 2.24189e+00 282 2015 11 1.94245e+01 5.28484e+00 803 2015 12 1.11096e+01 5.94844e+00 747 2016 1 1.34341e+01 6.98950e+00 380 2016 2 8.81921e+00 6.93798e+00 819 2016 3 1.27868e+01 4.15710e+00 323 2016 4 1.29576e+01 2.42852e+00 682 2016 5 1.72555e+01 5.37360e+00 525 2016 6 1.90312e+01 1.67692e+00 384 2016 7 2.32684e+01 3.92177e+00 259 2016 8 2.21095e+01 2.03704e+00 342 2016 9 1.10693e+01 3.77269e+00 582 2016 10 8.63181e+00 3.35133e+00 702 2016 11 1.20423e+01 4.09280e+00 1113 2016 12 1.53859e+01 5.10585e+00 844 2017 1 1.10118e+01 8.85099e+00 195 2017 2 1.69794e+01 1.86250e+00 91 2017 3 5.16786e+00 1.01693e+01 49 2017 4 2.89007e+01 2.66535e+00 108 2017 5 7.55735e+00 3.88192e+00 320 2017 6 5.74682e+00 4.73549e-01 64 2017 7 1.00471e+01 4.05017e+00 130 2017 8 1.72600e+01 8.15972e+00 193 2017 9 6.72909e+00 7.14803e+00 697 2017 10 3.85603e+00 2.87127e+00 479 2017 11 1.03240e+01 3.47583e+00 1216 2017 12 1.05700e+01 5.03250e+00 1216 2018 1 4.84765e+00 6.14004e+00 604 2018 2 1.55535e+01 4.16264e+00 805 2018 3 1.12654e+01 6.76607e+00 190 2018 4 1.67518e+01 4.32064e+00 237 2018 5 1.42956e+01 2.87390e+00 180 2018 6 1.96970e+01 2.48873e+00 11 2018 7 2.74303e+01 5.06510e+00 104 2018 8 2.52809e+01 5.37686e-01 55 2018 9 1.75194e+01 5.17663e+00 417 2018 10 1.21490e+01 4.86927e+00 919 2018 11 8.80277e+00 5.99907e+00 927 2018 12 4.09360e+00 4.10576e+00 842 2019 1 5.70715e+00 4.72364e+00 896 2019 2 1.26309e+01 2.72491e+00 1125 2019 3 1.37480e+01 7.23202e+00 739 2019 4 1.66360e+01 2.95656e+00 354 2019 5 2.81982e+01 6.14866e+00 16 2019 6 2.32868e+01 3.89907e+00 152 2019 7 2.26708e+01 1.89485e+00 125 2019 8 1.90776e+01 7.82666e-01 14 2019 9 1.31222e+01 2.59557e+00 398 2019 10 1.50617e+01 2.66781e+00 598 2019 11 9.85833e+00 4.01637e+00 936 2019 12 9.99634e+00 5.08474e+00 832 2020 1 1.04436e+01 5.50077e+00 797 2020 2 5.50767e+00 7.36987e+00 86 2020 3 2.67772e+01 4.49967e-01 25 2020 4 2.60185e+01 3.57299e+00 131 2020 5 1.62915e+01 3.14947e+00 306 2020 6 1.84617e+01 3.32127e+00 338 2020 7 2.07502e+01 2.44338e+00 241 2020 8 2.05687e+01 3.99564e+00 412 2020 9 1.44665e+01 6.02138e+00 302 2020 10 1.31744e+01 2.62219e+00 326 2020 11 5.52372e+00 4.00201e+00 669 2020 12 5.19606e+00 4.05731e+00 1150 2021 1 2.89797e+00 2.06213e+00 685 2021 2 9.89326e+00 5.72763e+00 908 2021 3 1.72026e+01 4.57555e+00 424 2021 4 2.22139e+01 6.02315e-01 66 2021 5 8.23062e+00 7.68052e+00 134 2021 6 1.98615e+01 5.73917e+00 123 2021 7 1.97216e+01 7.98532e+00 422 2021 8 1.15046e+01 3.36359e+00 257 2021 9 1.46271e+01 3.21080e+00 498 2021 10 1.48686e+01 4.61570e+00 678 2021 11 5.63537e+00 4.85192e+00 837 2021 12 9.87694e+00 3.72888e+00 1088 2022 1 9.50919e+00 7.67215e+00 707 2022 2 1.28037e+01 5.23138e+00 896 2022 3 1.73540e+01 5.27807e+00 765 2022 4 2.19893e+01 2.36777e+00 147 2022 5 2.35140e+01 6.37416e+00 325 2022 6 2.12865e+01 4.49433e+00 292 2022 7 2.29107e+01 2.47770e+00 302 2022 8 1.23216e+01 7.86503e+00 426 2022 9 1.52607e+01 2.34419e+00 344 2022 10 5.20371e+00 2.83200e+00 1093 2022 11 4.16636e+00 3.72597e+00 851 2022 12 4.91656e+00 2.54366e+00 954 2023 1 6.32467e+00 3.32603e+00 831 2023 2 8.03982e+00 3.39750e+00 1088 2023 3 1.30599e+01 5.30464e+00 668 2023 4 1.47890e+01 7.18228e+00 192 2023 5 2.02354e+01 5.45741e+00 125 2023 6 2.28969e+01 3.14208e+00 89 2023 7 1.84611e+01 4.89969e+00 250 2023 8 1.51653e+01 3.23071e+00 61 2023 9 1.29914e+01 1.17940e+01 77 2023 10 2.04404e+01 1.02198e+01 591 2023 11 1.68905e+01 5.53678e+00 477 2023 12 3.60533e+00 4.76140e+00 204 2024 1 nan nan 0 2024 2 8.10418e+00 7.43549e+00 468 2024 3 2.21602e+01 1.09994e+01 279 2024 4 nan nan 0