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 2.41264e+00 3.26536e-01 63 2002 8 1.93481e+00 3.16626e-01 48 2002 9 3.21929e+00 6.41991e-01 112 2002 10 3.62439e+00 9.09593e-01 144 2002 11 4.22425e+00 1.03558e+00 160 2002 12 3.72782e+00 1.02566e+00 205 2003 1 3.10199e+00 8.04298e-01 208 2003 2 2.76315e+00 7.35605e-01 161 2003 3 8.18416e+00 7.62171e+00 137 2003 4 3.69389e+00 1.05661e+00 194 2003 5 3.24927e+00 8.73989e-01 80 2003 6 2.23548e+00 4.50545e-01 81 2003 7 6.48428e+00 2.37670e+00 64 2003 8 4.22008e+00 3.33153e+00 97 2003 9 6.81646e+00 5.15628e+00 144 2003 10 3.92164e+00 1.19260e+00 224 2003 11 4.12522e+00 1.29274e+00 239 2003 12 2.94072e+00 8.54517e-01 192 2004 1 1.71590e+00 2.26596e-01 177 2004 2 3.07125e+00 4.54890e-01 64 2004 3 2.66601e+00 5.91278e-01 192 2004 4 1.83943e+00 3.64045e-01 148 2004 5 1.58951e+00 2.74208e-01 182 2004 6 1.20688e+00 1.06938e-01 32 2004 7 1.83325e+00 4.14480e-01 68 2004 8 1.81000e+00 3.36735e-01 112 2004 9 2.72016e+00 9.21888e-01 64 2004 10 3.18525e+00 1.62936e+00 121 2004 11 3.12519e+00 8.59495e-01 156 2004 12 3.88586e+00 8.77526e-01 144 2005 1 3.15705e+00 8.10674e-01 176 2005 2 3.32938e+00 1.08071e+00 152 2005 3 2.80372e+00 6.47987e-01 190 2005 4 5.54558e+00 2.91497e+00 132 2005 5 3.57718e+00 1.09979e+00 137 2005 6 2.54155e+00 7.17815e-01 80 2005 7 4.17740e+00 1.25422e+00 128 2005 8 3.24353e+00 1.30901e+00 48 2005 9 8.02481e+00 6.14452e+00 64 2005 10 5.26618e+00 2.73609e+00 244 2005 11 2.97376e+00 7.84916e-01 249 2005 12 3.24378e+00 4.07314e-01 128 2006 1 3.15740e+00 7.25483e-01 160 2006 2 3.28011e+00 7.40157e-01 154 2006 3 2.57585e+00 7.10059e-01 284 2006 4 2.12745e+00 6.32283e-01 187 2006 5 1.53796e+00 5.78701e-01 174 2006 6 2.08320e+00 9.65039e-01 160 2006 7 1.63940e+00 5.35664e-01 64 2006 8 2.03104e+00 3.76013e-01 112 2006 9 2.47724e+00 7.71580e-01 143 2006 10 2.74964e+00 1.14321e+00 268 2006 11 2.68306e+00 6.79184e-01 255 2006 12 2.49048e+00 8.28922e-01 128 2007 1 2.76641e+00 1.00217e+00 80 2007 2 2.82455e+00 6.33948e-01 176 2007 3 2.54742e+00 7.18124e-01 318 2007 4 2.50766e+00 1.05640e+00 192 2007 5 2.25081e+00 5.91546e-01 128 2007 6 1.91567e+00 2.89035e-01 125 2007 7 1.96802e+00 2.42642e-01 72 2007 8 2.68366e+00 5.45396e-01 66 2007 9 3.39668e+00 6.28024e-01 112 2007 10 3.94349e+00 8.60083e-01 192 2007 11 3.40351e+00 9.78743e-01 278 2007 12 2.32080e+00 5.88032e-01 102 2008 1 2.98738e+00 1.04949e+00 192 2008 2 2.43486e+00 6.66688e-01 272 2008 3 3.90087e+00 1.17897e+00 170 2008 4 2.65680e+00 6.95024e-01 144 2008 5 2.32808e+00 6.27651e-01 159 2008 6 2.47047e+00 6.33355e-01 161 2008 7 1.73883e+00 5.56466e-01 96 2008 8 1.48696e+00 2.04671e-01 48 2008 9 4.71987e+00 1.46073e+00 120 2008 10 3.98359e+00 8.34672e-01 288 2008 11 3.18003e+00 7.89006e-01 272 2008 12 3.47964e+00 1.04597e+00 167 2009 1 3.02405e+00 1.78881e+00 202 2009 2 2.18305e+00 4.82963e-01 208 2009 3 2.77742e+00 4.63671e-01 208 2009 4 5.13467e+00 2.39485e+00 138 2009 5 4.32194e+00 2.36060e+00 128 2009 6 2.03862e+00 4.02296e-01 112 2009 7 1.38139e+00 1.95183e-01 48 2009 8 2.66426e+00 7.66830e-01 112 2009 9 4.48497e+00 2.06993e+00 107 2009 10 3.89674e+00 1.26525e+00 207 2009 11 3.55723e+00 7.54799e-01 128 2009 12 5.54626e+00 1.98660e+00 64 2010 1 4.08033e+00 7.78912e-01 192 2010 2 4.53624e+00 1.07047e+00 203 2010 3 3.58924e+00 5.83425e-01 208 2010 4 5.44638e+00 2.04423e+00 192 2010 5 3.77053e+00 1.86887e+00 117 2010 6 2.32023e+00 3.51494e-01 103 2010 7 2.79407e+00 8.12243e-01 65 2010 8 1.49435e+00 3.52404e-01 75 2010 9 2.87746e+00 8.19125e-01 212 2010 10 2.37976e+00 1.26149e+00 336 2010 11 2.19665e+00 5.18034e-01 297 2010 12 3.51770e+00 1.93906e+00 228 2011 1 2.89634e+00 7.13405e-01 240 2011 2 2.65143e+00 4.52299e-01 206 2011 3 2.30959e+00 5.82967e-01 192 2011 4 1.91542e+00 5.52968e-01 192 2011 5 1.86708e+00 8.65313e-01 217 2011 6 1.89046e+00 3.91823e-01 176 2011 7 1.61018e+00 3.40502e-01 128 2011 8 1.92406e+00 4.95473e-01 201 2011 9 2.11402e+00 4.57798e-01 128 2011 10 2.44825e+00 6.32113e-01 282 2011 11 2.47005e+00 4.83799e-01 240 2011 12 2.52024e+00 5.14927e-01 224 2012 1 2.37394e+00 7.14320e-01 216 2012 2 2.18083e+00 7.14427e-01 64 2012 3 2.40111e+00 7.65527e-01 224 2012 4 1.72145e+00 3.60957e-01 240 2012 5 1.70852e+00 4.36945e-01 130 2012 6 2.35109e+00 8.34439e-01 116 2012 7 3.41303e+00 1.73341e+00 84 2012 8 2.29431e+00 1.03505e+00 122 2012 9 5.66183e+00 4.38451e+00 109 2012 10 4.77465e+00 1.51995e+00 228 2012 11 2.29007e+00 4.06093e-01 272 2012 12 3.76895e+00 2.40148e+00 64 2013 1 1.99508e+00 1.34914e+00 149 2013 2 2.53500e+00 9.59286e-01 104 2013 3 4.21835e+00 2.69508e+00 192 2013 4 4.20344e+00 7.72165e-01 96 2013 5 2.18098e+00 7.25409e-01 173 2013 6 2.78355e+00 1.17089e+00 96 2013 7 4.97352e+00 2.24317e-01 16 2013 8 5.30068e+00 3.58400e+00 116 2013 9 4.10249e+00 1.65309e+00 182 2013 10 4.84597e+00 2.29507e+00 239 2013 11 4.52371e+00 1.09625e+00 133 2013 12 3.39859e+00 6.01404e-01 128 2014 1 3.06962e+00 7.71795e-01 144 2014 2 2.69114e+00 5.60865e-01 160 2014 3 5.20645e+00 1.50143e+00 172 2014 4 3.75165e+00 1.71383e+00 159 2014 5 7.94319e+00 7.27799e+00 201 2014 6 3.89885e+00 2.21921e+00 135 2014 7 1.94068e+00 3.53758e-01 80 2014 8 1.59339e+00 6.19914e-01 166 2014 9 2.55209e+00 5.29800e-01 176 2014 10 2.47135e+00 6.69872e-01 300 2014 11 2.59391e+00 9.63814e-01 265 2014 12 2.81972e+00 8.62819e-01 208 2015 1 4.59020e+00 1.57299e+00 208 2015 2 3.28996e+00 1.06520e+00 208 2015 3 3.33692e+00 7.08707e-01 165 2015 4 2.68667e+00 8.39859e-01 96 2015 5 3.83109e+00 2.18963e+00 208 2015 6 3.23254e+00 1.68523e+00 80 2015 7 1.85001e+00 2.95209e-01 78 2015 8 1.76821e+00 7.85817e-01 114 2015 9 5.54543e+00 3.18907e+00 80 2015 10 2.94934e+00 8.18546e-01 218 2015 11 4.66533e+00 2.17786e+00 189 2015 12 7.49181e+00 2.58887e+00 144 2016 1 4.97397e+00 1.15820e+00 111 2016 2 3.54886e+00 7.79823e-01 272 2016 3 2.85235e+00 6.60791e-01 175 2016 4 5.20037e+00 3.33896e+00 128 2016 5 2.71039e+00 1.04824e+00 158 2016 6 1.45184e+00 2.31954e-01 144 2016 7 2.38827e+00 7.39429e-01 173 2016 8 2.95866e+00 8.87871e-01 79 2016 9 3.17888e+00 1.22010e+00 132 2016 10 3.07719e+00 1.09218e+00 272 2016 11 2.62858e+00 8.68899e-01 256 2016 12 2.64493e+00 8.10606e-01 224 2017 1 3.02620e+00 7.38730e-01 192 2017 2 3.05932e+00 5.67908e-01 256 2017 3 3.19018e+00 1.00610e+00 186 2017 4 2.36374e+00 7.99825e-01 144 2017 5 2.20035e+00 5.57910e-01 112 2017 6 1.96970e+00 2.32574e-01 64 2017 7 2.96767e+00 1.16969e+00 128 2017 8 2.88239e+00 1.06280e+00 112 2017 9 2.32220e+00 8.27000e-01 179 2017 10 3.91177e+00 1.12813e+00 228 2017 11 2.35310e+00 6.19124e-01 272 2017 12 3.23633e+00 1.36091e+00 160 2018 1 2.26417e+00 4.37016e-01 240 2018 2 2.10109e+00 6.02074e-01 139 2018 3 1.98516e+00 7.59779e-01 240 2018 4 2.12918e+00 6.93325e-01 208 2018 5 2.46284e+00 7.71202e-01 181 2018 6 2.73499e+00 1.54378e+00 101 2018 7 2.47983e+00 5.77460e-01 74 2018 8 4.35359e+00 2.26697e+00 80 2018 9 4.33971e+00 1.58269e+00 128 2018 10 6.29334e+00 3.17153e+00 272 2018 11 4.62099e+00 1.25583e+00 112 2018 12 3.32795e+00 4.31737e-01 112 2019 1 3.86838e+00 1.55569e+00 169 2019 2 4.97118e+00 2.78115e-01 32 2019 3 4.37891e+00 1.84678e+00 176 2019 4 2.97593e+00 5.33062e-01 96 2019 5 3.21660e+00 1.55025e+00 188 2019 6 1.50377e+00 5.46819e-01 96 2019 7 2.65614e+00 9.89561e-01 159 2019 8 2.35341e+00 6.42780e-01 103 2019 9 2.98806e+00 9.44342e-01 256 2019 10 2.78301e+00 1.13181e+00 132 2019 11 2.90224e+00 1.10979e+00 208 2019 12 3.78790e+00 1.01271e+00 96 2020 1 3.01754e+00 9.61336e-01 144 2020 2 3.55335e+00 6.96943e-01 160 2020 3 4.38899e+00 2.71008e+00 176 2020 4 2.72504e+00 5.59775e-01 192 2020 5 3.59201e+00 9.88975e-01 128 2020 6 2.17318e+00 6.43519e-01 109 2020 7 1.82634e+00 1.79486e-01 32 2020 8 1.63632e+00 8.33096e-01 74 2020 9 3.12999e+00 9.24980e-01 80 2020 10 4.74727e+00 1.30397e+00 192 2020 11 4.80992e+00 1.03688e+00 318 2020 12 4.01508e+00 1.02230e+00 269 2021 1 3.64371e+00 6.50572e-01 128 2021 2 3.28862e+00 7.43086e-01 128 2021 3 5.25130e+00 1.70841e+00 132 2021 4 3.74750e+00 1.24069e+00 160 2021 5 4.52694e+00 1.10489e+00 144 2021 6 1.62722e+00 3.11164e-01 39 2021 7 2.30290e+00 5.97066e-01 80 2021 8 4.01692e+00 2.42939e+00 124 2021 9 4.41016e+00 1.92326e+00 112 2021 10 1.02411e+01 5.97175e+00 192 2021 11 4.81077e+00 1.46303e+00 224 2021 12 3.34719e+00 8.86997e-01 135 2022 1 3.59152e+00 8.79206e-01 192 2022 2 2.87731e+00 9.45921e-01 144 2022 3 2.39097e+00 9.45928e-01 239 2022 4 3.96501e+00 1.04958e+00 53 2022 5 2.52352e+00 8.92401e-01 128 2022 6 2.10352e+00 6.03243e-01 146 2022 7 1.89260e+00 4.44309e-01 121 2022 8 2.60546e+00 1.35135e+00 109 2022 9 5.64453e+00 7.38439e+00 160 2022 10 3.01059e+00 1.12887e+00 288 2022 11 2.53853e+00 4.53034e-01 149 2022 12 2.77379e+00 9.43638e-01 161 2023 1 1.88579e+00 4.59805e-01 238 2023 2 2.70887e+00 8.19093e-01 160 2023 3 1.79983e+00 6.01944e-01 166 2023 4 2.91925e+00 9.55535e-01 96 2023 5 2.09969e+00 3.97289e-01 112 2023 6 1.66861e+00 5.93247e-01 108 2023 7 1.99568e+00 5.09283e-01 128 2023 8 2.38236e+00 6.10960e-01 132 2023 9 2.66787e+00 1.04157e+00 192 2023 10 3.60206e+00 1.14374e+00 224 2023 11 3.96570e+00 2.34717e+00 173 2023 12 4.34236e+00 1.46281e+00 96 2024 1 3.81521e+00 3.41929e-01 106 2024 2 2.54865e+00 5.05292e-01 160 2024 3 3.68376e+00 1.00182e+00 112 2024 4 nan nan 0