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 6.14985e+01 8.44114e-01 63 2002 8 5.72863e+01 1.26939e-01 48 2002 9 4.93960e+01 2.90451e+00 112 2002 10 4.37717e+01 2.14284e+00 144 2002 11 3.38223e+01 2.10724e+00 160 2002 12 2.98221e+01 5.01914e-01 205 2003 1 3.20031e+01 1.29154e+00 208 2003 2 3.91732e+01 2.49244e+00 161 2003 3 5.17113e+01 1.71486e+00 137 2003 4 5.71529e+01 1.92384e+00 194 2003 5 6.19656e+01 7.59231e-01 80 2003 6 6.30785e+01 1.18214e-01 81 2003 7 6.13648e+01 7.24362e-01 64 2003 8 5.78318e+01 1.31472e+00 97 2003 9 5.14510e+01 1.89569e+00 144 2003 10 4.24517e+01 2.57449e+00 224 2003 11 3.40650e+01 2.00092e+00 239 2003 12 2.98617e+01 4.83237e-01 192 2004 1 3.29310e+01 1.24222e+00 177 2004 2 4.22529e+01 1.58620e+00 64 2004 3 5.03040e+01 1.90660e+00 192 2004 4 5.68077e+01 1.89415e+00 148 2004 5 6.19182e+01 9.43859e-01 182 2004 6 6.30489e+01 1.12912e-02 32 2004 7 6.21949e+01 2.28682e-01 68 2004 8 5.79463e+01 1.72338e+00 112 2004 9 5.01930e+01 1.94876e+00 64 2004 10 4.24994e+01 2.86084e+00 121 2004 11 3.45904e+01 1.77791e+00 156 2004 12 2.95283e+01 1.49928e-01 144 2005 1 3.29135e+01 1.62800e+00 176 2005 2 3.94022e+01 1.96007e+00 152 2005 3 4.83441e+01 2.40814e+00 190 2005 4 5.73731e+01 1.32758e+00 132 2005 5 6.18374e+01 7.12011e-01 137 2005 6 6.31113e+01 2.03383e-01 80 2005 7 6.17322e+01 5.70814e-01 128 2005 8 5.76793e+01 1.26375e+00 48 2005 9 4.97602e+01 2.73239e+00 64 2005 10 4.22663e+01 2.72501e+00 244 2005 11 3.44632e+01 1.90310e+00 249 2005 12 2.97630e+01 5.00969e-01 128 2006 1 3.28955e+01 1.88641e+00 160 2006 2 4.06303e+01 2.65968e+00 154 2006 3 4.92079e+01 2.88478e+00 284 2006 4 5.72222e+01 1.79496e+00 187 2006 5 6.19434e+01 8.30678e-01 174 2006 6 6.31126e+01 1.88352e-01 160 2006 7 6.17816e+01 9.13267e-01 64 2006 8 5.85253e+01 1.60364e+00 112 2006 9 5.07754e+01 3.10027e+00 143 2006 10 4.29750e+01 2.84517e+00 268 2006 11 3.43763e+01 2.03507e+00 255 2006 12 2.99682e+01 6.10059e-01 128 2007 1 3.25341e+01 1.87679e+00 80 2007 2 4.00007e+01 2.21047e+00 176 2007 3 4.93877e+01 2.69976e+00 318 2007 4 5.78974e+01 1.97286e+00 192 2007 5 6.15140e+01 9.08211e-01 128 2007 6 6.29183e+01 3.89635e-01 125 2007 7 6.14234e+01 6.50629e-01 72 2007 8 5.72938e+01 1.55491e+00 66 2007 9 4.87290e+01 1.29061e+00 112 2007 10 4.40609e+01 1.78909e+00 192 2007 11 3.46649e+01 1.83327e+00 278 2007 12 2.99554e+01 3.63368e-01 102 2008 1 3.22059e+01 2.04131e+00 192 2008 2 3.95876e+01 2.78923e+00 272 2008 3 5.07776e+01 2.69928e+00 170 2008 4 5.86864e+01 9.34202e-01 144 2008 5 6.18415e+01 1.01506e+00 159 2008 6 6.30369e+01 1.43086e-01 161 2008 7 6.16545e+01 5.75687e-01 96 2008 8 5.79508e+01 1.66366e+00 48 2008 9 4.98674e+01 1.69380e+00 120 2008 10 4.16816e+01 2.67312e+00 288 2008 11 3.47085e+01 1.77406e+00 272 2008 12 2.97015e+01 4.94668e-01 167 2009 1 3.24128e+01 1.69324e+00 202 2009 2 3.98893e+01 2.62027e+00 208 2009 3 4.79543e+01 2.19625e+00 208 2009 4 5.83289e+01 1.88954e+00 138 2009 5 6.16866e+01 8.69963e-01 128 2009 6 6.30140e+01 2.29850e-01 112 2009 7 6.19434e+01 1.15613e+00 48 2009 8 5.74665e+01 1.09263e+00 112 2009 9 5.03778e+01 2.71526e+00 107 2009 10 4.28714e+01 2.48686e+00 207 2009 11 3.42817e+01 1.94676e+00 128 2009 12 2.96133e+01 1.33620e-01 64 2010 1 3.20858e+01 1.75346e+00 192 2010 2 4.07782e+01 2.38311e+00 203 2010 3 4.93382e+01 2.96717e+00 208 2010 4 5.73588e+01 1.99596e+00 192 2010 5 6.18937e+01 7.29718e-01 117 2010 6 6.29737e+01 8.84202e-02 103 2010 7 6.18900e+01 8.01559e-01 65 2010 8 5.92352e+01 1.08538e+00 75 2010 9 5.13309e+01 2.22512e+00 212 2010 10 4.29238e+01 2.50839e+00 336 2010 11 3.40516e+01 1.78486e+00 297 2010 12 3.00893e+01 5.34887e-01 228 2011 1 3.25135e+01 1.61840e+00 240 2011 2 4.08452e+01 1.83086e+00 206 2011 3 4.92563e+01 2.26128e+00 192 2011 4 5.70872e+01 1.83626e+00 192 2011 5 6.18815e+01 8.70218e-01 217 2011 6 6.30711e+01 1.54713e-01 176 2011 7 6.16805e+01 7.38844e-01 128 2011 8 5.79970e+01 1.60558e+00 201 2011 9 5.10028e+01 2.38274e+00 128 2011 10 4.28927e+01 2.79487e+00 282 2011 11 3.46146e+01 2.07002e+00 240 2011 12 2.99896e+01 5.44018e-01 224 2012 1 3.23989e+01 1.76516e+00 216 2012 2 3.95216e+01 1.46261e+00 64 2012 3 4.94478e+01 2.24340e+00 224 2012 4 5.72463e+01 1.98944e+00 240 2012 5 6.19069e+01 8.88987e-01 130 2012 6 6.31725e+01 1.71749e-01 116 2012 7 6.16454e+01 7.14488e-01 84 2012 8 5.74839e+01 8.59611e-01 122 2012 9 4.89723e+01 1.70648e+00 109 2012 10 4.12724e+01 2.12971e+00 228 2012 11 3.43798e+01 2.16327e+00 272 2012 12 2.99818e+01 7.03766e-01 64 2013 1 3.37749e+01 1.30557e+00 149 2013 2 4.01673e+01 3.14524e+00 104 2013 3 4.98171e+01 2.76376e+00 192 2013 4 5.70158e+01 1.52850e+00 96 2013 5 6.20487e+01 6.33506e-01 173 2013 6 6.30851e+01 7.98738e-02 96 2013 7 6.18151e+01 1.04394e-02 16 2013 8 5.76490e+01 1.42185e+00 116 2013 9 5.14066e+01 2.42772e+00 182 2013 10 4.24130e+01 2.27896e+00 239 2013 11 3.40859e+01 2.39004e+00 133 2013 12 2.96070e+01 2.29239e-01 128 2014 1 3.24111e+01 1.13111e+00 144 2014 2 4.04665e+01 1.88279e+00 160 2014 3 4.96980e+01 2.74022e+00 172 2014 4 5.73725e+01 1.81350e+00 159 2014 5 6.17461e+01 7.07027e-01 201 2014 6 6.30176e+01 9.60105e-02 135 2014 7 6.12681e+01 7.74903e-01 80 2014 8 5.80944e+01 1.53482e+00 166 2014 9 5.10287e+01 2.04910e+00 176 2014 10 4.27312e+01 2.54897e+00 300 2014 11 3.42483e+01 2.08896e+00 265 2014 12 2.99377e+01 4.24556e-01 208 2015 1 3.30110e+01 1.79481e+00 208 2015 2 3.86756e+01 1.56311e+00 208 2015 3 4.95168e+01 2.60627e+00 165 2015 4 5.62980e+01 2.54915e+00 96 2015 5 6.16782e+01 9.34530e-01 208 2015 6 6.30432e+01 1.30220e-01 80 2015 7 6.17164e+01 5.16120e-01 78 2015 8 5.76567e+01 1.45507e+00 114 2015 9 5.03415e+01 1.10175e+00 80 2015 10 4.25263e+01 2.43137e+00 218 2015 11 3.31591e+01 1.91435e+00 189 2015 12 3.00378e+01 4.28968e-01 144 2016 1 3.27355e+01 1.58943e+00 111 2016 2 4.04791e+01 2.50758e+00 272 2016 3 4.86343e+01 2.01346e+00 175 2016 4 5.68187e+01 1.77773e+00 128 2016 5 6.17056e+01 7.19697e-01 158 2016 6 6.30696e+01 1.01211e-01 144 2016 7 6.19551e+01 7.29793e-01 173 2016 8 5.73518e+01 1.03982e+00 79 2016 9 5.03916e+01 2.67130e+00 132 2016 10 4.20417e+01 2.58303e+00 274 2016 11 3.40804e+01 1.89144e+00 256 2016 12 2.96581e+01 3.93078e-01 224 2017 1 3.22350e+01 1.62477e+00 192 2017 2 4.04888e+01 2.57714e+00 256 2017 3 4.97693e+01 2.41017e+00 186 2017 4 5.68275e+01 1.50513e+00 144 2017 5 6.19805e+01 8.46029e-01 112 2017 6 6.29792e+01 1.76118e-01 64 2017 7 6.19520e+01 6.76920e-01 128 2017 8 5.73708e+01 1.59161e+00 112 2017 9 5.04025e+01 2.23109e+00 179 2017 10 4.12222e+01 2.35101e+00 228 2017 11 3.42192e+01 2.16719e+00 272 2017 12 2.99757e+01 3.92786e-01 160 2018 1 3.21234e+01 1.73021e+00 240 2018 2 4.11004e+01 1.89299e+00 139 2018 3 4.86932e+01 2.78374e+00 240 2018 4 5.77959e+01 1.80486e+00 208 2018 5 6.15459e+01 8.25611e-01 181 2018 6 6.30127e+01 1.03949e-01 101 2018 7 6.17790e+01 6.20562e-01 74 2018 8 5.80807e+01 1.51386e+00 80 2018 9 4.95406e+01 1.89776e+00 128 2018 10 4.24074e+01 2.62909e+00 272 2018 11 3.40022e+01 1.76234e+00 112 2018 12 3.00383e+01 4.59289e-01 112 2019 1 3.23873e+01 1.55552e+00 169 2019 2 4.05494e+01 3.02882e+00 32 2019 3 5.04477e+01 2.38028e+00 176 2019 4 5.88008e+01 8.50331e-01 96 2019 5 6.20434e+01 7.42469e-01 188 2019 6 6.30384e+01 2.07430e-01 96 2019 7 6.16323e+01 9.04989e-01 159 2019 8 5.85221e+01 1.67273e+00 103 2019 9 5.06638e+01 2.52618e+00 256 2019 10 4.37144e+01 2.37771e+00 132 2019 11 3.41245e+01 2.08036e+00 208 2019 12 2.99055e+01 3.16809e-01 96 2020 1 3.19798e+01 1.74984e+00 144 2020 2 4.04764e+01 3.18060e+00 160 2020 3 5.00903e+01 2.66624e+00 176 2020 4 5.74268e+01 2.19579e+00 192 2020 5 6.15919e+01 7.70589e-01 128 2020 6 6.31090e+01 1.27743e-01 109 2020 7 6.17544e+01 6.15935e-01 32 2020 8 5.98566e+01 6.36131e-01 74 2020 9 5.15048e+01 2.51742e+00 80 2020 10 4.17841e+01 2.68704e+00 192 2020 11 3.43895e+01 1.85723e+00 318 2020 12 2.97703e+01 3.82948e-01 269 2021 1 3.23697e+01 1.91980e+00 128 2021 2 4.09521e+01 3.05115e+00 128 2021 3 4.84085e+01 1.87219e+00 132 2021 4 5.68047e+01 2.21605e+00 160 2021 5 6.20386e+01 7.57221e-01 144 2021 6 6.31365e+01 5.95191e-02 39 2021 7 6.13541e+01 4.08005e-01 80 2021 8 5.89494e+01 8.23106e-01 124 2021 9 5.13625e+01 2.83751e+00 112 2021 10 4.19583e+01 1.91053e+00 192 2021 11 3.43661e+01 1.93226e+00 224 2021 12 2.98590e+01 5.36805e-01 135 2022 1 3.26221e+01 2.04451e+00 192 2022 2 4.04364e+01 2.02049e+00 144 2022 3 4.93390e+01 2.83077e+00 239 2022 4 5.88981e+01 6.63008e-01 53 2022 5 6.14547e+01 1.05937e+00 128 2022 6 6.30467e+01 1.22723e-01 146 2022 7 6.15754e+01 8.08934e-01 121 2022 8 5.71036e+01 1.66756e+00 109 2022 9 4.98932e+01 1.77477e+00 160 2022 10 4.30527e+01 2.43877e+00 288 2022 11 3.52546e+01 2.05862e+00 149 2022 12 2.98056e+01 4.90169e-01 161 2023 1 3.25723e+01 1.66803e+00 238 2023 2 3.96543e+01 3.02312e+00 160 2023 3 4.91383e+01 2.18415e+00 166 2023 4 5.79801e+01 1.53176e+00 96 2023 5 6.15765e+01 7.90781e-01 112 2023 6 6.30069e+01 1.27030e-01 108 2023 7 6.13539e+01 9.12822e-01 128 2023 8 5.79139e+01 1.42932e+00 132 2023 9 5.14310e+01 1.54113e+00 192 2023 10 4.08445e+01 2.11456e+00 224 2023 11 3.49264e+01 2.23131e+00 173 2023 12 2.93903e+01 2.06753e-01 96 2024 1 3.22884e+01 2.04989e+00 106 2024 2 4.13319e+01 2.14416e+00 160 2024 3 5.04015e+01 2.94099e+00 112 2024 4 nan nan 0