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 6.19056e+01 4.65522e-01 80 2002 8 5.81087e+01 1.27597e+00 128 2002 9 5.05848e+01 2.48123e+00 158 2002 10 4.29146e+01 2.77600e+00 222 2002 11 3.42048e+01 2.11276e+00 235 2002 12 2.97698e+01 4.93460e-01 164 2003 1 3.20497e+01 1.55960e+00 272 2003 2 3.97781e+01 2.37211e+00 160 2003 3 5.07939e+01 2.32556e+00 64 2003 4 5.73543e+01 1.98521e+00 104 2003 5 6.26994e+01 2.58679e-01 28 2003 6 6.32618e+01 1.14094e-01 87 2003 7 6.13147e+01 4.08578e-01 48 2003 8 5.71501e+01 1.40720e+00 108 2003 9 5.19418e+01 2.19805e+00 168 2003 10 4.18945e+01 2.56661e+00 224 2003 11 3.38163e+01 1.79280e+00 254 2003 12 2.97821e+01 5.35887e-01 224 2004 1 3.22321e+01 1.65131e+00 208 2004 2 4.24374e+01 1.65385e+00 48 2004 3 4.97912e+01 2.29566e+00 247 2004 4 5.78267e+01 1.94276e+00 164 2004 5 6.16994e+01 9.47246e-01 208 2004 6 6.31578e+01 1.11697e-01 114 2004 7 6.16781e+01 7.53246e-01 74 2004 8 5.78024e+01 1.37226e+00 138 2004 9 5.13169e+01 2.20551e+00 112 2004 10 4.26532e+01 5.08243e-01 64 2004 11 3.47285e+01 1.86444e+00 113 2004 12 2.94425e+01 1.94512e-01 144 2005 1 3.23760e+01 1.52618e+00 192 2005 2 3.88758e+01 1.69024e+00 128 2005 3 4.85969e+01 3.18943e+00 160 2005 4 5.71697e+01 1.95332e+00 76 2005 5 6.19104e+01 8.23610e-01 133 2005 6 6.31714e+01 1.76702e-01 96 2005 7 6.16221e+01 4.92628e-01 128 2005 8 5.73743e+01 2.10538e-03 16 2005 9 4.96676e+01 2.53823e+00 98 2005 10 4.22518e+01 2.55108e+00 240 2005 11 3.45950e+01 1.88042e+00 272 2005 12 2.97778e+01 5.48533e-01 256 2006 1 3.24755e+01 1.81213e+00 217 2006 2 3.92660e+01 2.02387e+00 192 2006 3 4.90887e+01 2.74037e+00 270 2006 4 5.75961e+01 1.68561e+00 159 2006 5 6.19211e+01 6.88812e-01 204 2006 6 6.32491e+01 7.73461e-02 96 2006 7 6.17454e+01 6.72655e-01 144 2006 8 5.86859e+01 1.51365e+00 108 2006 9 5.07186e+01 2.47661e+00 185 2006 10 4.27015e+01 3.16802e+00 208 2006 11 3.40340e+01 2.04842e+00 265 2006 12 2.97696e+01 4.42715e-01 141 2007 1 3.24903e+01 1.73143e+00 144 2007 2 4.02670e+01 2.51295e+00 212 2007 3 4.93949e+01 2.54990e+00 302 2007 4 5.73192e+01 2.10280e+00 192 2007 5 6.15954e+01 7.66674e-01 100 2007 6 6.31944e+01 1.45401e-01 155 2007 7 6.14095e+01 6.77566e-01 117 2007 8 5.77880e+01 1.39874e+00 129 2007 9 5.06557e+01 2.41440e+00 165 2007 10 4.40493e+01 1.85830e+00 208 2007 11 3.47422e+01 1.99529e+00 301 2007 12 2.98364e+01 4.95307e-01 234 2008 1 3.21914e+01 1.93351e+00 232 2008 2 3.98597e+01 3.04331e+00 271 2008 3 5.00514e+01 3.02841e+00 240 2008 4 5.81584e+01 1.50301e+00 199 2008 5 6.19821e+01 8.90336e-01 157 2008 6 6.31905e+01 1.82435e-01 116 2008 7 6.19519e+01 4.28133e-01 124 2008 8 5.85002e+01 1.63423e+00 96 2008 9 5.07372e+01 2.28518e+00 221 2008 10 4.20584e+01 2.79758e+00 272 2008 11 3.41938e+01 1.83144e+00 256 2008 12 2.98607e+01 6.01419e-01 225 2009 1 3.28102e+01 1.86784e+00 176 2009 2 4.03390e+01 2.59582e+00 256 2009 3 4.84187e+01 2.50189e+00 256 2009 4 5.73874e+01 1.91310e+00 139 2009 5 6.21304e+01 7.52204e-01 92 2009 6 6.33268e+01 1.46458e-01 140 2009 7 6.22094e+01 4.85005e-01 96 2009 8 5.83941e+01 1.33681e+00 144 2009 9 5.11517e+01 2.09038e+00 221 2009 10 4.22855e+01 2.70191e+00 199 2009 11 3.36557e+01 1.80542e+00 174 2009 12 2.95437e+01 1.03774e-01 64 2010 1 3.21854e+01 1.88700e+00 237 2010 2 4.00126e+01 2.26363e+00 190 2010 3 4.90695e+01 3.07154e+00 240 2010 4 5.66980e+01 1.83868e+00 154 2010 5 6.18628e+01 7.03067e-01 170 2010 6 6.30739e+01 1.35675e-01 144 2010 7 6.14524e+01 8.93977e-01 112 2010 8 5.90363e+01 1.04392e+00 105 2010 9 5.12932e+01 2.07777e+00 199 2010 10 4.28086e+01 2.81018e+00 376 2010 11 3.39162e+01 1.90603e+00 305 2010 12 2.99700e+01 5.56005e-01 272 2011 1 3.24511e+01 1.65834e+00 203 2011 2 4.12692e+01 1.80099e+00 192 2011 3 4.89802e+01 2.22820e+00 224 2011 4 5.68898e+01 1.82179e+00 272 2011 5 6.18287e+01 8.69397e-01 192 2011 6 6.33196e+01 2.13769e-01 80 2011 7 6.14238e+01 1.12506e+00 112 2011 8 5.80060e+01 1.37433e+00 180 2011 9 5.11904e+01 2.41237e+00 194 2011 10 4.29453e+01 3.05241e+00 256 2011 11 3.42366e+01 2.15636e+00 272 2011 12 2.99496e+01 5.97150e-01 256 2012 1 3.20979e+01 1.82905e+00 312 2012 2 4.00732e+01 2.14672e+00 96 2012 3 5.01604e+01 2.42610e+00 203 2012 4 5.78929e+01 1.88064e+00 250 2012 5 6.16968e+01 8.51100e-01 121 2012 6 6.33258e+01 1.68393e-01 104 2012 7 6.19415e+01 4.93369e-01 128 2012 8 5.83372e+01 1.63568e+00 62 2012 9 5.06076e+01 2.77516e+00 115 2012 10 4.22430e+01 2.20262e+00 228 2012 11 3.41575e+01 2.15197e+00 256 2012 12 2.98637e+01 4.17741e-01 192 2013 1 3.34873e+01 1.25778e+00 176 2013 2 4.04348e+01 3.06270e+00 160 2013 3 4.91804e+01 2.69023e+00 208 2013 4 5.76393e+01 1.97590e+00 109 2013 5 6.18730e+01 7.59051e-01 132 2013 6 6.31016e+01 1.73967e-01 107 2013 7 6.13270e+01 6.58758e-01 32 2013 8 5.87595e+01 1.37914e+00 53 2013 9 5.19008e+01 2.56494e+00 153 2013 10 4.26184e+01 2.89804e+00 246 2013 11 3.43906e+01 2.05190e+00 132 2013 12 2.97129e+01 3.53006e-01 180 2014 1 3.21255e+01 8.00568e-01 112 2014 2 4.06718e+01 1.95605e+00 159 2014 3 4.84418e+01 2.73853e+00 184 2014 4 5.58049e+01 1.18105e+00 112 2014 5 6.13396e+01 8.84470e-01 53 2014 6 6.31027e+01 8.09815e-02 85 2014 7 6.17580e+01 7.22100e-01 142 2014 8 5.81237e+01 1.69798e+00 99 2014 9 5.17859e+01 2.23076e+00 156 2014 10 4.19513e+01 2.49947e+00 347 2014 11 3.40364e+01 2.25232e+00 257 2014 12 2.98232e+01 4.11660e-01 224 2015 1 3.30768e+01 1.63754e+00 208 2015 2 3.89888e+01 1.46140e+00 176 2015 3 4.95096e+01 3.16882e+00 128 2015 4 5.67106e+01 2.66826e+00 48 2015 5 6.18364e+01 8.30655e-01 234 2015 6 6.31397e+01 1.48634e-01 115 2015 7 6.16623e+01 7.05559e-01 83 2015 8 5.79633e+01 1.45658e+00 112 2015 9 5.25108e+01 1.98714e+00 64 2015 10 4.19218e+01 2.36610e+00 224 2015 11 3.37267e+01 1.93169e+00 206 2015 12 2.98242e+01 3.31439e-01 128 2016 1 3.26460e+01 1.30551e+00 176 2016 2 4.04083e+01 2.64760e+00 288 2016 3 4.95142e+01 3.07925e+00 176 2016 4 5.71952e+01 1.80355e+00 128 2016 5 6.18993e+01 7.57918e-01 224 2016 6 6.31210e+01 1.86225e-01 128 2016 7 6.15804e+01 7.04029e-01 222 2016 8 5.74325e+01 1.10131e+00 192 2016 9 5.08416e+01 2.27031e+00 208 2016 10 4.22738e+01 2.74512e+00 256 2016 11 3.39069e+01 1.92304e+00 213 2016 12 2.97066e+01 4.69744e-01 215 2017 1 3.18995e+01 1.72486e+00 192 2017 2 3.97749e+01 2.51289e+00 267 2017 3 4.99225e+01 2.77013e+00 320 2017 4 5.72545e+01 1.81240e+00 203 2017 5 6.18432e+01 7.67695e-01 128 2017 6 6.31169e+01 1.18533e-01 112 2017 7 6.17757e+01 1.02069e+00 64 2017 8 5.81330e+01 1.27434e+00 160 2017 9 5.09701e+01 2.59055e+00 187 2017 10 4.11448e+01 2.70668e+00 217 2017 11 3.44031e+01 1.98711e+00 282 2017 12 2.98918e+01 4.30489e-01 192 2018 1 3.24649e+01 1.71300e+00 224 2018 2 4.16026e+01 2.13596e+00 126 2018 3 4.92973e+01 2.77832e+00 202 2018 4 5.76755e+01 1.93007e+00 144 2018 5 6.13083e+01 8.16886e-01 124 2018 6 6.31403e+01 8.41617e-02 64 2018 7 6.21847e+01 8.68748e-01 80 2018 8 5.77672e+01 1.72866e+00 114 2018 9 5.04346e+01 1.78843e+00 252 2018 10 4.26910e+01 2.78722e+00 272 2018 11 3.38583e+01 1.97818e+00 96 2018 12 2.97980e+01 4.33926e-01 185 2019 1 3.25494e+01 1.32054e+00 167 2019 2 4.12461e+01 1.88919e+00 99 2019 3 4.98302e+01 2.42732e+00 172 2019 4 5.79535e+01 1.69255e+00 103 2019 5 6.17315e+01 8.15586e-01 215 2019 6 6.31793e+01 1.12542e-01 68 2019 7 6.16859e+01 1.02405e+00 103 2019 8 5.77611e+01 1.46665e+00 144 2019 9 5.05469e+01 2.10619e+00 216 2019 10 4.29522e+01 3.06138e+00 198 2019 11 3.40279e+01 2.11141e+00 184 2019 12 2.98774e+01 5.91007e-01 160 2020 1 3.23049e+01 1.61328e+00 146 2020 2 4.04550e+01 3.16348e+00 152 2020 3 4.93736e+01 2.44207e+00 192 2020 4 5.73817e+01 2.23919e+00 192 2020 5 6.13934e+01 7.93188e-01 176 2020 6 6.32175e+01 1.31908e-01 140 2020 7 6.15964e+01 4.47999e-01 109 2020 8 5.96850e+01 5.71474e-01 52 2020 9 5.07124e+01 2.34267e+00 132 2020 10 4.19190e+01 2.23816e+00 261 2020 11 3.39942e+01 1.82979e+00 253 2020 12 2.96514e+01 2.91688e-01 166 2021 1 3.22668e+01 1.82099e+00 144 2021 2 4.09641e+01 2.67765e+00 114 2021 3 4.86077e+01 2.04781e+00 196 2021 4 5.73100e+01 1.83099e+00 175 2021 5 6.20705e+01 7.13801e-01 174 2021 6 6.30835e+01 7.77349e-02 63 2021 7 6.16463e+01 6.69261e-01 93 2021 8 5.81994e+01 1.10929e+00 112 2021 9 5.03250e+01 2.39646e+00 141 2021 10 4.17242e+01 1.98160e+00 180 2021 11 3.37086e+01 1.92677e+00 208 2021 12 2.95991e+01 5.17564e-01 129 2022 1 3.22791e+01 1.86896e+00 241 2022 2 4.00138e+01 2.30721e+00 204 2022 3 4.99583e+01 2.94895e+00 208 2022 4 5.91995e+01 5.57999e-01 79 2022 5 6.14633e+01 8.39684e-01 160 2022 6 6.30177e+01 1.31230e-01 144 2022 7 6.19328e+01 9.65469e-01 85 2022 8 5.86120e+01 1.67443e+00 112 2022 9 4.95455e+01 1.26102e+00 112 2022 10 4.28947e+01 2.67507e+00 334 2022 11 3.60388e+01 1.25224e+00 125 2022 12 2.98126e+01 5.43707e-01 241 2023 1 3.20561e+01 1.48722e+00 224 2023 2 4.04360e+01 2.44518e+00 170 2023 3 4.89326e+01 2.09735e+00 184 2023 4 5.76300e+01 1.67779e+00 112 2023 5 6.13613e+01 6.97052e-01 112 2023 6 6.31281e+01 8.54824e-02 80 2023 7 6.16626e+01 1.08886e+00 96 2023 8 5.78551e+01 1.57790e+00 173 2023 9 5.18438e+01 1.74860e+00 149 2023 10 4.09115e+01 2.36557e+00 202 2023 11 3.52381e+01 1.95762e+00 192 2023 12 2.94155e+01 1.75496e-01 80 2024 1 3.18333e+01 1.99348e+00 128 2024 2 4.09989e+01 2.23448e+00 139 2024 3 5.09018e+01 2.13850e+00 48 2024 4 nan nan 0