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 6.25344e+01 1.20972e+00 208 2002 8 5.33995e+01 2.97165e+00 404 2002 9 4.26533e+01 3.94308e+00 351 2002 10 2.79307e+01 3.03039e+00 79 2002 11 nan nan 0 2002 12 1.44129e+01 1.06615e-02 35 2003 1 1.45827e+01 2.49447e-03 6 2003 2 nan nan 0 2003 3 4.37907e+01 1.25015e+00 42 2003 4 5.27083e+01 3.02491e+00 276 2003 5 5.92789e+01 2.28769e+00 181 2003 6 6.52232e+01 2.25036e-01 244 2003 7 6.20696e+01 1.06143e+00 125 2003 8 5.47745e+01 1.96518e+00 325 2003 9 4.47340e+01 2.65201e+00 233 2003 10 3.22149e+01 9.07768e-01 162 2003 11 1.89785e+01 1.42293e+00 164 2003 12 1.43592e+01 3.76398e-01 130 2004 1 nan nan 0 2004 2 2.89994e+01 7.83509e-03 7 2004 3 3.75899e+01 2.36950e+00 100 2004 4 4.82824e+01 2.12592e+00 241 2004 5 6.07134e+01 2.29524e+00 131 2004 6 6.48308e+01 4.37589e-01 158 2004 7 6.12816e+01 4.51536e-01 101 2004 8 5.56172e+01 2.28727e+00 200 2004 9 4.09573e+01 3.46200e+00 452 2004 10 3.13644e+01 3.16297e+00 178 2004 11 1.83927e+01 1.14841e+00 150 2004 12 1.43167e+01 9.42741e-04 3 2005 1 nan nan 0 2005 2 2.54639e+01 2.21137e+00 34 2005 3 4.02625e+01 3.40309e+00 183 2005 4 4.95388e+01 2.14682e+00 361 2005 5 6.07988e+01 1.99710e+00 196 2005 6 6.47668e+01 6.08960e-01 158 2005 7 6.28727e+01 1.68172e+00 320 2005 8 5.36169e+01 2.78817e+00 262 2005 9 4.24138e+01 3.27039e+00 299 2005 10 2.98402e+01 5.26447e+00 187 2005 11 1.95558e+01 1.75964e+00 137 2005 12 1.43519e+01 2.15462e-02 31 2006 1 1.71047e+01 1.66039e+00 94 2006 2 nan nan 0 2006 3 3.94458e+01 3.97390e+00 338 2006 4 5.29365e+01 2.46202e+00 330 2006 5 6.00647e+01 1.84791e+00 134 2006 6 6.47048e+01 5.24969e-01 273 2006 7 6.17974e+01 1.28728e+00 125 2006 8 5.39939e+01 3.10650e+00 392 2006 9 4.20618e+01 2.99400e+00 133 2006 10 3.29942e+01 9.17512e-01 112 2006 11 1.83208e+01 2.14039e+00 93 2006 12 1.38854e+01 1.38550e-02 36 2007 1 1.67754e+01 1.27177e-02 36 2007 2 3.08421e+01 4.77453e-02 32 2007 3 4.01323e+01 2.44510e+00 185 2007 4 5.16054e+01 2.27250e+00 125 2007 5 5.95306e+01 1.77041e+00 236 2007 6 6.50502e+01 2.28063e-01 348 2007 7 6.19516e+01 1.64963e+00 328 2007 8 5.56048e+01 3.15276e+00 248 2007 9 4.36295e+01 3.60832e+00 393 2007 10 3.12987e+01 3.49167e+00 212 2007 11 2.21473e+01 9.11442e-03 33 2007 12 1.42465e+01 1.33881e-01 78 2008 1 1.68496e+01 7.90784e-03 27 2008 2 2.90970e+01 7.32718e-03 29 2008 3 4.16683e+01 2.40660e+00 127 2008 4 5.20859e+01 2.66815e+00 345 2008 5 6.17897e+01 8.43222e-01 167 2008 6 6.50702e+01 2.75046e-01 61 2008 7 6.32874e+01 1.34423e+00 148 2008 8 5.37956e+01 3.12445e+00 429 2008 9 4.17850e+01 2.95660e+00 349 2008 10 2.91275e+01 3.12108e+00 236 2008 11 2.22539e+01 5.69434e-01 111 2008 12 1.45560e+01 7.18023e-03 9 2009 1 nan nan 0 2009 2 2.54343e+01 8.59734e-01 43 2009 3 4.11153e+01 2.36423e+00 152 2009 4 5.17925e+01 2.77543e+00 369 2009 5 6.11937e+01 1.21174e+00 196 2009 6 6.48428e+01 5.27370e-01 181 2009 7 6.29745e+01 1.36065e+00 156 2009 8 5.39239e+01 2.44726e+00 213 2009 9 4.41525e+01 3.11730e+00 461 2009 10 3.08424e+01 3.26628e+00 72 2009 11 1.90322e+01 1.12185e+00 219 2009 12 nan nan 0 2010 1 1.66303e+01 2.05406e-01 49 2010 2 2.71046e+01 1.84859e-01 79 2010 3 3.91563e+01 4.32739e+00 266 2010 4 5.36893e+01 1.86573e+00 221 2010 5 6.12395e+01 1.49774e+00 395 2010 6 6.47837e+01 6.36977e-01 166 2010 7 6.24645e+01 1.90370e+00 194 2010 8 5.17006e+01 2.57439e+00 200 2010 9 4.19223e+01 2.45991e+00 121 2010 10 3.02740e+01 3.13609e+00 316 2010 11 1.95035e+01 2.32816e+00 209 2010 12 1.42842e+01 6.95210e-03 11 2011 1 1.94940e+01 0.00000e+00 1 2011 2 2.67220e+01 1.24778e+00 56 2011 3 4.23108e+01 1.06096e+00 150 2011 4 5.13129e+01 2.63743e+00 277 2011 5 5.88811e+01 1.09758e+00 199 2011 6 6.45748e+01 6.80527e-01 152 2011 7 6.31267e+01 1.40801e+00 221 2011 8 5.42599e+01 3.40381e+00 381 2011 9 4.40802e+01 3.41862e+00 207 2011 10 3.18282e+01 3.82018e+00 351 2011 11 1.85197e+01 2.41815e+00 109 2011 12 nan nan 0 2012 1 nan nan 0 2012 2 2.47758e+01 2.92207e+00 132 2012 3 4.04238e+01 3.25235e+00 231 2012 4 4.93935e+01 2.62223e+00 338 2012 5 6.00155e+01 1.43908e+00 228 2012 6 6.49328e+01 1.85464e-01 154 2012 7 6.19501e+01 1.63398e+00 218 2012 8 5.32896e+01 3.45672e+00 331 2012 9 4.20403e+01 4.74705e+00 384 2012 10 3.04768e+01 3.67445e+00 168 2012 11 1.82693e+01 9.64905e-02 70 2012 12 1.43096e+01 6.99899e-03 27 2013 1 1.58449e+01 5.69208e-01 83 2013 2 nan nan 0 2013 3 4.04109e+01 4.26690e+00 190 2013 4 4.83075e+01 2.92719e+00 101 2013 5 5.90095e+01 1.97769e+00 148 2013 6 6.51542e+01 1.61661e-01 108 2013 7 6.23615e+01 9.67331e-01 161 2013 8 5.26927e+01 1.97014e+00 206 2013 9 4.15373e+01 3.73242e+00 476 2013 10 3.29176e+01 1.73117e+00 225 2013 11 1.99977e+01 2.20693e+00 78 2013 12 1.46702e+01 1.08654e-02 21 2014 1 nan nan 0 2014 2 nan nan 0 2014 3 4.44250e+01 2.38830e-02 23 2014 4 5.27431e+01 3.41789e+00 198 2014 5 6.14601e+01 2.23215e+00 169 2014 6 6.48781e+01 1.79447e-01 144 2014 7 6.26658e+01 1.17885e+00 100 2014 8 5.56901e+01 3.26643e+00 205 2014 9 4.03197e+01 3.00143e+00 232 2014 10 2.74152e+01 2.12321e+00 163 2014 11 2.22900e+01 0.00000e+00 1 2014 12 1.42747e+01 1.55454e-01 100 2015 1 nan nan 0 2015 2 nan nan 0 2015 3 3.86472e+01 3.06529e+00 80 2015 4 5.25167e+01 2.30714e+00 272 2015 5 5.77820e+01 1.51688e+00 123 2015 6 6.45203e+01 7.62366e-01 214 2015 7 6.11413e+01 1.14673e+00 141 2015 8 5.64669e+01 1.06526e+00 194 2015 9 4.06390e+01 2.03076e+00 294 2015 10 2.87235e+01 2.86498e+00 81 2015 11 2.06280e+01 1.57573e+00 238 2015 12 1.45872e+01 1.02937e-01 67 2016 1 1.43699e+01 7.60031e-02 33 2016 2 nan nan 0 2016 3 4.16422e+01 1.99140e+00 173 2016 4 5.22306e+01 3.10058e+00 243 2016 5 5.92639e+01 1.66261e+00 228 2016 6 6.51040e+01 2.07344e-01 241 2016 7 6.09265e+01 1.07221e+00 253 2016 8 5.58926e+01 2.59941e+00 320 2016 9 4.36202e+01 3.24395e+00 265 2016 10 3.17616e+01 2.50538e+00 149 2016 11 2.07347e+01 1.26657e+00 196 2016 12 1.38677e+01 3.45221e-03 14 2017 1 1.52404e+01 1.12453e+00 74 2017 2 2.95311e+01 1.32329e+00 66 2017 3 3.76572e+01 5.12000e+00 138 2017 4 5.18406e+01 2.67877e+00 299 2017 5 5.95111e+01 9.75142e-01 187 2017 6 6.46685e+01 4.73863e-01 166 2017 7 6.15278e+01 1.43564e+00 308 2017 8 5.45524e+01 3.60922e+00 69 2017 9 4.22425e+01 3.77019e+00 330 2017 10 3.09018e+01 3.21577e+00 270 2017 11 2.15349e+01 1.45997e+00 47 2017 12 nan nan 0 2018 1 nan nan 0 2018 2 2.97047e+01 7.95897e-01 75 2018 3 3.86568e+01 4.21118e+00 395 2018 4 5.44550e+01 1.52686e+00 133 2018 5 6.01601e+01 1.62408e+00 303 2018 6 6.48556e+01 4.94070e-01 221 2018 7 6.30463e+01 1.64158e+00 269 2018 8 5.53778e+01 1.51774e+00 93 2018 9 4.33060e+01 1.84369e+00 284 2018 10 2.83827e+01 2.89547e+00 168 2018 11 nan nan 0 2018 12 nan nan 0 2019 1 1.48686e+01 8.97560e-02 47 2019 2 nan nan 0 2019 3 4.15447e+01 3.01435e+00 216 2019 4 5.29233e+01 2.32704e+00 188 2019 5 5.93192e+01 1.74894e+00 232 2019 6 6.49428e+01 2.39999e-01 260 2019 7 6.27592e+01 1.66869e+00 171 2019 8 5.41345e+01 3.21757e+00 287 2019 9 4.42170e+01 2.93433e+00 127 2019 10 3.05932e+01 2.23932e+00 112 2019 11 nan nan 0 2019 12 1.44022e+01 5.44965e-01 81 2020 1 nan nan 0 2020 2 2.83625e+01 6.79816e-01 89 2020 3 3.89585e+01 3.42062e+00 205 2020 4 4.99158e+01 3.90520e+00 243 2020 5 5.92934e+01 1.81675e+00 232 2020 6 6.49291e+01 5.21204e-01 361 2020 7 6.28158e+01 1.86015e+00 318 2020 8 5.63553e+01 7.64121e-01 117 2020 9 4.10952e+01 1.52209e+00 228 2020 10 2.87220e+01 5.25661e+00 84 2020 11 2.00748e+01 1.43442e+00 200 2020 12 1.48803e+01 1.46097e-02 41 2021 1 1.52248e+01 7.48705e-02 45 2021 2 3.05530e+01 1.31890e+00 51 2021 3 3.68003e+01 2.71456e+00 353 2021 4 5.07922e+01 4.17009e+00 197 2021 5 6.06467e+01 1.08214e+00 198 2021 6 6.43121e+01 8.36474e-01 92 2021 7 6.26044e+01 1.36009e+00 176 2021 8 5.35891e+01 1.65721e+00 143 2021 9 4.18378e+01 3.80868e+00 291 2021 10 2.93249e+01 2.53392e+00 130 2021 11 1.87658e+01 2.00919e+00 84 2021 12 1.40609e+01 7.66026e-02 73 2022 1 1.45020e+01 1.40001e-02 12 2022 2 nan nan 0 2022 3 4.02244e+01 3.17463e+00 104 2022 4 5.41754e+01 1.63562e+00 127 2022 5 5.95125e+01 1.50658e+00 118 2022 6 6.46838e+01 6.40353e-01 197 2022 7 6.32467e+01 1.11785e+00 130 2022 8 5.46882e+01 2.29604e+00 425 2022 9 4.08093e+01 4.39212e+00 366 2022 10 2.98451e+01 4.50666e+00 520 2022 11 2.20801e+01 1.37317e+00 166 2022 12 1.46171e+01 3.14722e-02 48 2023 1 nan nan 0 2023 2 nan nan 0 2023 3 4.37859e+01 4.63888e-01 44 2023 4 4.91995e+01 1.73556e+00 340 2023 5 6.19556e+01 1.55013e+00 362 2023 6 6.50490e+01 3.25981e-01 161 2023 7 6.24809e+01 1.53532e+00 342 2023 8 5.32631e+01 3.34247e+00 362 2023 9 4.28974e+01 3.65462e+00 381 2023 10 3.18640e+01 3.31542e+00 212 2023 11 1.90619e+01 1.27937e+00 155 2023 12 nan nan 0 2024 1 nan nan 0 2024 2 nan nan 0 2024 3 nan nan 0 2024 4 nan nan 0