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 1.37378e+01 4.99574e+00 64 2002 8 1.73618e+01 2.04533e+00 64 2002 9 9.06324e+00 7.29974e+00 87 2002 10 7.93554e+00 5.58713e+00 154 2002 11 3.84064e+00 2.07201e+00 172 2002 12 1.39185e+00 1.10304e+00 160 2003 1 2.46492e+00 2.55771e+00 197 2003 2 4.99483e+00 3.27702e+00 192 2003 3 6.05353e+00 6.12817e+00 72 2003 4 6.36751e+00 4.30513e+00 192 2003 5 1.23048e+01 8.62842e+00 80 2003 6 1.06899e+01 2.24644e+00 84 2003 7 8.21175e+00 4.34089e+00 79 2003 8 8.20280e+00 4.55265e+00 64 2003 9 5.50191e+00 5.21003e+00 144 2003 10 5.06785e+00 4.30808e+00 209 2003 11 5.13328e+00 4.27287e+00 256 2003 12 3.20630e+00 1.83563e+00 174 2004 1 9.01112e+00 3.35549e+00 160 2004 2 4.24191e+00 3.05691e+00 80 2004 3 1.26581e+01 5.75044e+00 256 2004 4 1.34710e+01 7.82731e+00 204 2004 5 2.07096e+01 5.15421e+00 240 2004 6 2.67932e+01 1.71336e+00 48 2004 7 2.39318e+01 3.94970e+00 74 2004 8 1.67283e+01 4.14455e+00 154 2004 9 8.31374e+00 7.74019e+00 76 2004 10 7.49532e+00 6.67275e+00 80 2004 11 7.28226e+00 2.91852e+00 176 2004 12 1.17846e+00 1.28203e+00 180 2005 1 4.81338e+00 5.68126e+00 168 2005 2 8.41814e+00 4.31826e+00 144 2005 3 4.45207e+00 2.68594e+00 192 2005 4 2.22688e+00 2.00992e+00 160 2005 5 7.32548e+00 1.76505e+00 160 2005 6 7.93291e+00 4.13366e+00 92 2005 7 4.31235e+00 5.12168e+00 86 2005 8 7.25011e+00 5.18124e+00 80 2005 9 1.09562e+00 1.68110e+00 112 2005 10 1.99818e+00 2.62600e+00 219 2005 11 8.16026e+00 5.37764e+00 224 2005 12 2.59254e+00 3.15393e+00 160 2006 1 3.96234e+00 3.35140e+00 208 2006 2 4.87645e+00 4.47103e+00 194 2006 3 8.53378e+00 3.50567e+00 255 2006 4 1.98304e+01 3.63332e+00 176 2006 5 1.96376e+01 3.30645e+00 208 2006 6 1.82181e+01 9.85699e+00 128 2006 7 2.18856e+01 3.89069e+00 128 2006 8 1.64189e+01 4.31986e+00 151 2006 9 9.44423e+00 3.96386e+00 160 2006 10 9.50146e+00 3.92644e+00 240 2006 11 4.31673e+00 4.40945e+00 192 2006 12 5.33816e+00 2.59896e+00 112 2007 1 7.09261e+00 3.23425e+00 96 2007 2 5.82666e+00 3.41449e+00 170 2007 3 1.47702e+01 6.37245e+00 304 2007 4 1.19187e+01 6.05932e+00 176 2007 5 1.33889e+01 6.21803e+00 144 2007 6 1.87073e+01 3.04461e+00 121 2007 7 1.94053e+01 2.92610e+00 112 2007 8 1.92235e+01 2.95205e+00 128 2007 9 1.37099e+01 2.76185e+00 72 2007 10 9.99282e+00 1.66292e+00 105 2007 11 8.38735e+00 5.89614e+00 256 2007 12 1.67804e+01 7.74938e+00 128 2008 1 3.99599e+00 3.76967e+00 202 2008 2 8.62569e+00 3.56162e+00 220 2008 3 5.41211e+00 4.23138e+00 176 2008 4 1.30465e+01 4.18211e+00 176 2008 5 1.84618e+01 2.71604e+00 176 2008 6 1.68952e+01 3.59347e+00 160 2008 7 1.12666e+01 4.16913e+00 88 2008 8 1.59329e+01 3.44239e+00 80 2008 9 9.27934e+00 6.94190e+00 144 2008 10 9.61782e+00 6.17173e+00 284 2008 11 5.46030e+00 3.98239e+00 250 2008 12 5.59514e+00 3.78008e+00 176 2009 1 4.45472e+00 3.84060e+00 216 2009 2 5.50438e+00 3.32097e+00 222 2009 3 1.19215e+01 5.76619e+00 222 2009 4 1.10754e+01 6.88129e+00 95 2009 5 1.69458e+01 7.88419e+00 121 2009 6 1.03952e+01 2.28043e+00 96 2009 7 2.04067e+01 1.83544e+00 64 2009 8 1.74565e+01 1.25724e+00 104 2009 9 1.60734e+01 7.43088e+00 132 2009 10 5.96807e+00 4.91946e+00 192 2009 11 1.43641e+00 1.05713e+00 228 2009 12 1.41817e+00 1.89674e+00 80 2010 1 1.42361e+00 1.23084e+00 215 2010 2 1.59703e+00 1.73116e+00 165 2010 3 2.73143e+00 2.82775e+00 183 2010 4 1.66586e+00 2.30062e+00 160 2010 5 6.59901e+00 4.02815e+00 128 2010 6 9.58191e+00 2.65207e+00 129 2010 7 2.12708e+01 5.03492e+00 80 2010 8 2.00131e+01 1.17414e+01 96 2010 9 2.12329e+01 4.84492e+00 208 2010 10 1.13156e+01 3.83167e+00 309 2010 11 8.49461e+00 4.45464e+00 288 2010 12 2.35473e+00 2.36499e+00 255 2011 1 2.02478e+00 1.71486e+00 256 2011 2 5.06526e+00 3.57968e+00 208 2011 3 8.82098e+00 3.37217e+00 175 2011 4 1.53051e+01 6.03739e+00 208 2011 5 1.62611e+01 2.81566e+00 242 2011 6 1.44260e+01 4.45595e+00 112 2011 7 1.52620e+01 2.61952e+00 96 2011 8 1.41484e+01 3.11599e+00 192 2011 9 1.09150e+01 3.11139e+00 117 2011 10 6.79788e+00 3.17587e+00 252 2011 11 9.21561e+00 4.30999e+00 256 2011 12 5.50187e+00 3.43203e+00 208 2012 1 5.85873e+00 3.36813e+00 167 2012 2 3.92726e+00 1.04026e+00 32 2012 3 1.47199e+01 5.49454e+00 240 2012 4 1.77726e+01 5.93454e+00 184 2012 5 2.07507e+01 4.84672e+00 192 2012 6 1.48194e+01 1.05646e+01 128 2012 7 2.10452e+01 3.38288e+00 56 2012 8 1.27625e+01 3.03071e+00 138 2012 9 8.18389e+00 4.26070e+00 80 2012 10 1.51054e+00 1.55009e+00 226 2012 11 6.37430e+00 5.74834e+00 256 2012 12 1.13853e+01 7.47644e+00 112 2013 1 1.09695e+01 8.90762e+00 160 2013 2 5.77646e+00 5.12308e+00 128 2013 3 2.09785e+00 1.89046e+00 196 2013 4 6.01157e+00 3.98550e+00 112 2013 5 1.29275e+01 5.97069e+00 172 2013 6 1.54488e+01 4.32498e+00 128 2013 7 6.27273e+00 3.08010e+00 32 2013 8 9.13062e+00 4.28273e+00 100 2013 9 8.50769e+00 5.13931e+00 142 2013 10 3.16396e+00 5.11827e+00 192 2013 11 2.35165e+00 1.66150e+00 96 2013 12 5.12674e+00 2.65824e+00 213 2014 1 4.14750e+00 2.77297e+00 112 2014 2 9.50659e+00 4.02874e+00 176 2014 3 5.16194e+00 2.91156e+00 160 2014 4 3.64146e+00 2.40352e+00 141 2014 5 2.27160e+00 2.25838e+00 172 2014 6 6.05091e+00 4.65991e+00 142 2014 7 1.17764e+01 4.00396e+00 112 2014 8 1.73991e+01 3.91772e+00 156 2014 9 1.62792e+01 2.68651e+00 96 2014 10 9.34207e+00 3.33638e+00 237 2014 11 3.78775e+00 3.06410e+00 240 2014 12 5.03317e+00 3.52130e+00 209 2015 1 4.11430e+00 2.94160e+00 158 2015 2 5.47618e+00 2.89808e+00 208 2015 3 8.21062e+00 4.30428e+00 128 2015 4 1.25362e+01 5.00052e+00 78 2015 5 1.15136e+01 3.58658e+00 194 2015 6 2.33992e+01 5.56423e+00 120 2015 7 1.98812e+01 3.67130e+00 64 2015 8 1.73795e+01 2.38555e+00 96 2015 9 6.09831e+00 1.88366e+00 67 2015 10 1.35828e+01 2.92155e+00 176 2015 11 1.13041e+01 4.30682e+00 192 2015 12 4.36206e+00 5.28370e+00 144 2016 1 2.15093e-01 2.31572e-01 114 2016 2 1.49016e+00 1.32292e+00 256 2016 3 1.08699e+01 6.98833e+00 199 2016 4 8.44970e+00 4.65173e+00 109 2016 5 8.63139e+00 4.40680e+00 192 2016 6 1.81663e+01 3.06620e+00 160 2016 7 8.63307e+00 3.45958e+00 144 2016 8 1.59729e+01 2.21534e+00 101 2016 9 9.24161e+00 5.57989e+00 160 2016 10 1.07622e+01 5.83163e+00 270 2016 11 7.34217e+00 4.27616e+00 240 2016 12 3.60091e+00 2.27706e+00 192 2017 1 7.31214e+00 6.59921e+00 187 2017 2 5.80997e+00 3.59972e+00 301 2017 3 7.54461e+00 5.50661e+00 192 2017 4 1.43918e+01 5.64521e+00 160 2017 5 1.36933e+01 3.35923e+00 150 2017 6 9.33155e+00 3.78680e+00 48 2017 7 8.83969e+00 5.31285e+00 144 2017 8 1.41912e+01 2.46204e+00 88 2017 9 1.11645e+01 4.44678e+00 160 2017 10 5.57059e+00 2.61503e+00 189 2017 11 8.08586e+00 1.81631e+00 283 2017 12 7.76377e+00 4.88384e+00 168 2018 1 4.71964e+00 5.00799e+00 223 2018 2 1.55758e+01 5.21482e+00 92 2018 3 1.21577e+01 5.02416e+00 256 2018 4 1.42459e+01 6.50444e+00 202 2018 5 1.04051e+01 3.06473e+00 192 2018 6 1.59114e+01 3.74258e+00 150 2018 7 1.23655e+01 3.78834e+00 84 2018 8 1.37125e+01 4.57189e+00 112 2018 9 7.30723e+00 4.74890e+00 168 2018 10 1.66502e+00 3.61691e+00 206 2018 11 2.75049e+00 3.49042e+00 80 2018 12 1.78660e+00 2.51037e+00 123 2019 1 1.26718e+00 2.74409e+00 204 2019 2 3.89973e+00 3.20602e+00 32 2019 3 3.49310e+00 5.18599e+00 196 2019 4 6.97005e+00 5.48378e+00 97 2019 5 1.19827e+01 3.76730e+00 208 2019 6 1.65118e+01 3.45446e+00 91 2019 7 1.29175e+01 2.72099e+00 144 2019 8 1.54806e+01 3.70951e+00 129 2019 9 1.43142e+01 3.96570e+00 256 2019 10 1.60895e+01 6.68950e+00 141 2019 11 6.11370e+00 2.74882e+00 160 2019 12 6.58142e+00 6.87110e+00 77 2020 1 5.13360e+00 3.16910e+00 112 2020 2 3.06837e+00 3.30416e+00 134 2020 3 1.57517e+01 9.57699e+00 179 2020 4 7.72637e+00 3.19066e+00 143 2020 5 1.12285e+01 3.48580e+00 128 2020 6 1.95940e+01 7.54410e+00 96 2020 7 1.65687e+01 5.84712e+00 81 2020 8 1.56185e+01 4.74557e+00 80 2020 9 1.10955e+01 7.36299e+00 119 2020 10 5.87204e+00 6.22633e+00 160 2020 11 4.87056e+00 4.09667e+00 275 2020 12 9.29856e-01 8.33930e-01 256 2021 1 2.39233e+00 1.79260e+00 128 2021 2 5.15891e+00 3.34271e+00 144 2021 3 3.56128e+00 3.72560e+00 160 2021 4 8.60284e+00 3.17076e+00 173 2021 5 1.42216e+01 5.21852e+00 160 2021 6 1.76389e+01 4.80151e+00 48 2021 7 1.93403e+01 3.70890e+00 124 2021 8 8.31765e+00 5.73668e+00 96 2021 9 2.62752e+00 1.02645e+00 57 2021 10 2.61181e-01 4.30169e-01 159 2021 11 3.03201e+00 3.16054e+00 208 2021 12 7.28822e+00 5.50515e+00 152 2022 1 3.71807e+00 4.91589e+00 183 2022 2 1.17933e+01 6.56632e+00 128 2022 3 1.39024e+01 6.85342e+00 258 2022 4 2.61229e+01 2.21257e+00 51 2022 5 1.98109e+01 4.05129e+00 129 2022 6 1.67316e+01 4.10374e+00 192 2022 7 1.76969e+01 4.24995e+00 96 2022 8 1.55898e+01 4.36693e+00 76 2022 9 1.00303e+01 4.03407e+00 144 2022 10 9.87774e+00 4.84914e+00 272 2022 11 1.40929e+01 3.88295e+00 160 2022 12 6.91164e+00 4.39722e+00 128 2023 1 1.14972e+01 4.94176e+00 240 2023 2 1.27455e+01 7.52627e+00 174 2023 3 1.87035e+01 4.50703e+00 151 2023 4 1.77651e+01 7.67964e+00 112 2023 5 1.74912e+01 5.15656e+00 96 2023 6 2.31110e+01 2.34746e+00 144 2023 7 1.72348e+01 3.41688e+00 144 2023 8 1.66077e+01 6.04222e+00 112 2023 9 7.48424e+00 2.12267e+00 110 2023 10 7.96536e+00 3.95491e+00 186 2023 11 5.92827e+00 1.80021e+00 160 2023 12 2.07897e+00 1.93235e+00 80 2024 1 3.29160e+00 2.80726e+00 80 2024 2 4.91177e+00 2.80577e+00 159 2024 3 3.46126e+00 2.51658e+00 96 2024 4 nan nan 0