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 6.18436e+01 6.43216e-01 126 2002 8 5.73192e+01 7.44458e-01 90 2002 9 5.03585e+01 2.48633e+00 104 2002 10 4.33377e+01 2.74679e+00 154 2002 11 3.38493e+01 2.25446e+00 160 2002 12 2.97674e+01 4.38193e-01 178 2003 1 3.13631e+01 1.41535e+00 179 2003 2 3.89284e+01 2.36098e+00 160 2003 3 5.11070e+01 1.89453e+00 127 2003 4 5.72154e+01 2.10682e+00 171 2003 5 6.22607e+01 7.80500e-01 96 2003 6 6.28911e+01 1.59702e-01 32 2003 7 6.16680e+01 8.03114e-01 49 2003 8 5.74961e+01 1.29843e+00 109 2003 9 5.16414e+01 1.03073e+00 90 2003 10 4.18596e+01 2.58285e+00 187 2003 11 3.39937e+01 2.10340e+00 207 2003 12 2.96775e+01 4.44107e-01 198 2004 1 3.21933e+01 1.56805e+00 138 2004 2 4.07434e+01 1.14801e-01 32 2004 3 4.85659e+01 1.76059e+00 162 2004 4 5.72882e+01 2.08379e+00 145 2004 5 6.17728e+01 8.90392e-01 208 2004 6 6.28649e+01 7.32433e-02 80 2004 7 6.16925e+01 7.11899e-01 48 2004 8 5.75920e+01 1.67871e+00 112 2004 9 5.03417e+01 2.14018e+00 149 2004 10 4.11558e+01 2.14345e+00 100 2004 11 3.44903e+01 2.07880e+00 144 2004 12 2.94872e+01 1.28789e-01 128 2005 1 3.23962e+01 1.63877e+00 156 2005 2 3.87884e+01 1.54415e+00 148 2005 3 4.84710e+01 3.02294e+00 144 2005 4 5.73151e+01 1.47886e+00 128 2005 5 6.16323e+01 7.85737e-01 176 2005 6 6.29389e+01 1.21846e-01 96 2005 7 6.14518e+01 6.82386e-01 103 2005 8 5.81350e+01 8.81420e-01 48 2005 9 5.15377e+01 2.63554e+00 146 2005 10 4.16292e+01 2.40562e+00 196 2005 11 3.44035e+01 1.94912e+00 224 2005 12 2.97021e+01 5.07334e-01 126 2006 1 3.23942e+01 1.74120e+00 208 2006 2 4.03875e+01 2.93536e+00 168 2006 3 4.94944e+01 3.04696e+00 212 2006 4 5.79612e+01 1.70688e+00 160 2006 5 6.21230e+01 6.47004e-01 171 2006 6 6.30148e+01 1.31144e-01 176 2006 7 6.13392e+01 9.02154e-01 64 2006 8 5.75334e+01 1.61807e+00 131 2006 9 5.12179e+01 2.49732e+00 176 2006 10 4.32222e+01 2.90373e+00 217 2006 11 3.42558e+01 2.07472e+00 224 2006 12 2.99053e+01 5.20153e-01 160 2007 1 3.19328e+01 1.56766e+00 128 2007 2 3.98334e+01 2.29838e+00 160 2007 3 4.95116e+01 2.73287e+00 269 2007 4 5.80343e+01 1.81734e+00 181 2007 5 6.14939e+01 8.77330e-01 142 2007 6 6.29582e+01 2.22579e-01 128 2007 7 6.18578e+01 6.13958e-01 96 2007 8 5.70329e+01 1.48492e+00 127 2007 9 4.99369e+01 1.93397e+00 96 2007 10 4.22789e+01 2.26437e+00 160 2007 11 3.47760e+01 1.71562e+00 224 2007 12 2.98341e+01 2.88731e-01 112 2008 1 3.15885e+01 1.93692e+00 174 2008 2 3.98198e+01 2.71016e+00 241 2008 3 5.04173e+01 2.62499e+00 160 2008 4 5.87219e+01 9.79925e-01 144 2008 5 6.19737e+01 8.97603e-01 144 2008 6 6.28508e+01 1.46404e-01 164 2008 7 6.18540e+01 4.59004e-01 80 2008 8 5.76355e+01 1.75356e+00 74 2008 9 5.09192e+01 2.28755e+00 144 2008 10 4.07354e+01 2.49264e+00 208 2008 11 3.44403e+01 1.88150e+00 208 2008 12 2.96616e+01 3.23702e-01 103 2009 1 3.20149e+01 1.66943e+00 160 2009 2 3.95850e+01 2.68030e+00 167 2009 3 4.76925e+01 2.21386e+00 144 2009 4 5.76733e+01 1.84280e+00 116 2009 5 6.12665e+01 7.08951e-01 80 2009 6 6.29687e+01 5.12896e-02 128 2009 7 6.18261e+01 2.88140e-01 37 2009 8 5.68036e+01 1.18322e+00 80 2009 9 5.11202e+01 1.97161e+00 110 2009 10 4.24366e+01 2.72963e+00 166 2009 11 3.45983e+01 2.05054e+00 159 2009 12 2.94795e+01 1.29060e-01 64 2010 1 3.11108e+01 1.35054e+00 192 2010 2 4.05280e+01 2.14133e+00 128 2010 3 4.96112e+01 3.23819e+00 148 2010 4 5.72432e+01 1.62131e+00 195 2010 5 6.21709e+01 7.67094e-01 162 2010 6 6.28279e+01 8.98919e-02 144 2010 7 6.20964e+01 7.99053e-01 64 2010 8 5.94161e+01 7.97370e-01 35 2010 9 5.16063e+01 2.45504e+00 243 2010 10 4.23645e+01 2.72164e+00 323 2010 11 3.41596e+01 1.84992e+00 272 2010 12 3.00435e+01 4.68216e-01 176 2011 1 3.19323e+01 1.64250e+00 176 2011 2 4.06730e+01 1.70039e+00 176 2011 3 4.95996e+01 1.88940e+00 192 2011 4 5.73368e+01 1.99472e+00 176 2011 5 6.16731e+01 7.15360e-01 208 2011 6 6.29459e+01 2.20939e-01 127 2011 7 6.15629e+01 8.00409e-01 128 2011 8 5.76582e+01 1.40026e+00 215 2011 9 5.15425e+01 2.31238e+00 160 2011 10 4.27488e+01 2.92921e+00 278 2011 11 3.39435e+01 2.24763e+00 207 2011 12 2.97655e+01 5.41665e-01 131 2012 1 3.20367e+01 1.79581e+00 240 2012 2 3.90732e+01 1.12584e-01 32 2012 3 4.96712e+01 2.28826e+00 183 2012 4 5.80642e+01 1.47962e+00 176 2012 5 6.19004e+01 8.26586e-01 176 2012 6 6.30280e+01 1.74900e-01 128 2012 7 6.11953e+01 5.92256e-01 48 2012 8 5.62987e+01 1.28684e-01 48 2012 9 5.04123e+01 2.48288e+00 101 2012 10 4.16702e+01 2.25294e+00 224 2012 11 3.44474e+01 1.92489e+00 304 2012 12 2.96759e+01 4.60917e-01 80 2013 1 3.39023e+01 1.05040e+00 124 2013 2 4.04326e+01 2.91166e+00 64 2013 3 5.00767e+01 2.75615e+00 164 2013 4 5.68065e+01 1.67024e+00 48 2013 5 6.19914e+01 7.42518e-01 174 2013 6 6.29156e+01 7.48431e-02 80 2013 7 6.18670e+01 5.19031e-01 91 2013 8 5.77681e+01 1.71905e+00 128 2013 9 5.15570e+01 2.48379e+00 235 2013 10 4.23618e+01 2.74530e+00 193 2013 11 3.35522e+01 2.32297e+00 112 2013 12 2.94535e+01 1.62772e-01 104 2014 1 3.16341e+01 9.53610e-01 96 2014 2 4.05563e+01 2.16896e+00 112 2014 3 4.94868e+01 2.82754e+00 161 2014 4 5.74061e+01 1.86471e+00 100 2014 5 6.16581e+01 6.63191e-01 144 2014 6 6.28776e+01 1.54868e-01 115 2014 7 6.14663e+01 8.43609e-01 102 2014 8 5.72925e+01 1.51219e+00 146 2014 9 5.15141e+01 2.07203e+00 128 2014 10 4.20061e+01 2.70169e+00 267 2014 11 3.39355e+01 2.33330e+00 208 2014 12 2.98307e+01 4.05033e-01 192 2015 1 3.27984e+01 1.89511e+00 158 2015 2 3.85850e+01 1.62797e+00 173 2015 3 4.90516e+01 2.41270e+00 176 2015 4 5.45532e+01 5.59054e-01 48 2015 5 6.15390e+01 9.30810e-01 169 2015 6 6.28225e+01 1.84000e-01 163 2015 7 6.18069e+01 6.62889e-01 124 2015 8 5.71414e+01 1.62135e+00 128 2015 9 5.14890e+01 1.82923e+00 96 2015 10 4.23657e+01 2.08357e+00 162 2015 11 3.30952e+01 2.09088e+00 174 2015 12 2.98925e+01 4.31304e-01 141 2016 1 3.18148e+01 1.68736e+00 141 2016 2 4.00971e+01 2.33009e+00 238 2016 3 4.87487e+01 2.09575e+00 104 2016 4 5.67944e+01 1.83525e+00 128 2016 5 6.19168e+01 8.03883e-01 176 2016 6 6.29035e+01 9.81670e-02 128 2016 7 6.21436e+01 5.21263e-01 105 2016 8 5.76568e+01 1.38619e+00 64 2016 9 5.00494e+01 2.23339e+00 172 2016 10 4.18457e+01 2.48890e+00 288 2016 11 3.42385e+01 1.85141e+00 252 2016 12 2.97233e+01 5.12446e-01 236 2017 1 3.22811e+01 1.80138e+00 161 2017 2 4.01055e+01 2.57689e+00 270 2017 3 5.00654e+01 2.64295e+00 176 2017 4 5.63837e+01 6.87157e-01 96 2017 5 6.15867e+01 8.07421e-01 111 2017 6 6.29030e+01 8.11678e-02 30 2017 7 6.14482e+01 7.32474e-01 96 2017 8 5.68791e+01 1.39991e+00 64 2017 9 5.00964e+01 2.17801e+00 207 2017 10 4.14892e+01 2.65268e+00 208 2017 11 3.41589e+01 1.94509e+00 207 2017 12 2.97467e+01 3.17622e-01 116 2018 1 3.20103e+01 1.66590e+00 176 2018 2 4.18251e+01 2.17628e+00 112 2018 3 4.94851e+01 2.54381e+00 202 2018 4 5.74371e+01 2.16315e+00 178 2018 5 6.11703e+01 7.50398e-01 144 2018 6 6.28280e+01 9.53898e-02 96 2018 7 6.13648e+01 7.02099e-01 96 2018 8 5.78189e+01 1.61330e+00 96 2018 9 5.12385e+01 2.16417e+00 196 2018 10 4.29832e+01 2.58481e+00 228 2018 11 3.35097e+01 1.66608e+00 100 2018 12 2.97916e+01 4.59676e-01 80 2019 1 3.18578e+01 1.82548e+00 194 2019 2 4.18152e+01 2.57544e+00 64 2019 3 5.00994e+01 2.71142e+00 192 2019 4 5.88885e+01 1.03777e+00 96 2019 5 6.17753e+01 8.48731e-01 206 2019 6 6.29499e+01 1.81409e-01 80 2019 7 6.17977e+01 7.59064e-01 89 2019 8 5.82899e+01 1.75368e+00 106 2019 9 5.10207e+01 2.56965e+00 288 2019 10 4.49032e+01 1.59888e+00 112 2019 11 3.37748e+01 2.22511e+00 195 2019 12 2.96281e+01 1.68087e-01 100 2020 1 3.11771e+01 1.68653e+00 160 2020 2 3.99914e+01 3.46807e+00 128 2020 3 4.98313e+01 2.36389e+00 237 2020 4 5.76983e+01 2.04253e+00 144 2020 5 6.10929e+01 6.50995e-01 96 2020 6 6.29370e+01 1.20757e-01 104 2020 7 6.14108e+01 1.76797e-01 39 2020 8 5.93280e+01 4.64807e-01 66 2020 9 5.19541e+01 2.61599e+00 101 2020 10 4.21315e+01 2.26256e+00 185 2020 11 3.41482e+01 1.83890e+00 256 2020 12 2.98063e+01 4.15423e-01 208 2021 1 3.19863e+01 1.91443e+00 128 2021 2 3.99920e+01 3.13582e+00 96 2021 3 4.78713e+01 1.68078e+00 112 2021 4 5.70173e+01 2.23226e+00 192 2021 5 6.21970e+01 6.32657e-01 128 2021 6 6.28256e+01 8.91289e-02 64 2021 7 6.12932e+01 4.40690e-01 128 2021 8 5.86455e+01 9.26695e-01 112 2021 9 5.02765e+01 2.31605e+00 100 2021 10 4.23529e+01 2.44408e+00 163 2021 11 3.41905e+01 1.93664e+00 192 2021 12 2.96161e+01 4.76817e-01 118 2022 1 3.15395e+01 1.70988e+00 208 2022 2 4.04045e+01 1.95271e+00 160 2022 3 4.96734e+01 2.94512e+00 240 2022 4 5.89098e+01 6.77051e-01 59 2022 5 6.17444e+01 1.05247e+00 99 2022 6 6.29344e+01 1.42176e-01 165 2022 7 6.16200e+01 7.49168e-01 96 2022 8 5.73274e+01 1.64871e+00 136 2022 9 4.98992e+01 1.63944e+00 144 2022 10 4.30947e+01 2.58203e+00 272 2022 11 3.52366e+01 2.02169e+00 96 2022 12 2.97631e+01 4.95181e-01 160 2023 1 3.19105e+01 1.56011e+00 224 2023 2 3.94700e+01 2.56297e+00 195 2023 3 4.82499e+01 2.33313e+00 162 2023 4 5.72772e+01 1.60717e+00 96 2023 5 6.15624e+01 7.68283e-01 128 2023 6 6.29841e+01 1.55105e-01 66 2023 7 6.16745e+01 1.04613e+00 80 2023 8 5.76959e+01 1.59673e+00 168 2023 9 5.14859e+01 1.76320e+00 124 2023 10 4.05455e+01 2.16657e+00 224 2023 11 3.51942e+01 2.02921e+00 145 2023 12 2.93763e+01 1.94139e-01 92 2024 1 3.17078e+01 1.50283e+00 126 2024 2 4.14935e+01 1.93736e+00 128 2024 3 5.14040e+01 2.28703e+00 84 2024 4 nan nan 0