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 6.15100e+01 7.39917e-01 32 2002 8 5.68745e+01 1.19423e+00 48 2002 9 5.02449e+01 2.68841e+00 60 2002 10 4.41579e+01 2.30528e+00 165 2002 11 3.41945e+01 1.99829e+00 211 2002 12 2.99922e+01 4.52443e-01 163 2003 1 3.17441e+01 1.41287e+00 265 2003 2 3.99544e+01 2.29954e+00 176 2003 3 5.13158e+01 2.05007e+00 79 2003 4 5.74867e+01 2.03278e+00 174 2003 5 6.18277e+01 9.17337e-01 94 2003 6 6.28261e+01 1.33091e-01 64 2003 7 6.18367e+01 6.51650e-01 64 2003 8 5.64397e+01 2.14533e-01 48 2003 9 5.18964e+01 1.93199e+00 96 2003 10 4.19680e+01 2.83820e+00 192 2003 11 3.44805e+01 1.93617e+00 256 2003 12 2.99593e+01 4.58665e-01 176 2004 1 3.24473e+01 1.35545e+00 161 2004 2 4.17722e+01 2.37127e+00 64 2004 3 4.98841e+01 2.22683e+00 224 2004 4 5.73301e+01 2.16262e+00 144 2004 5 6.18631e+01 8.67652e-01 224 2004 6 6.28399e+01 1.27660e-01 80 2004 7 6.19514e+01 5.96470e-01 95 2004 8 5.72295e+01 1.58045e+00 80 2004 9 5.19908e+01 2.45677e+00 64 2004 10 4.23480e+01 2.99909e+00 128 2004 11 3.48635e+01 1.67608e+00 163 2004 12 2.97815e+01 1.69027e-01 119 2005 1 3.26232e+01 1.47301e+00 144 2005 2 3.93267e+01 1.56977e+00 144 2005 3 4.88904e+01 3.02953e+00 176 2005 4 5.75895e+01 1.58328e+00 160 2005 5 6.16666e+01 6.79504e-01 208 2005 6 6.28670e+01 1.69262e-01 137 2005 7 6.18008e+01 6.04269e-01 109 2005 8 5.78685e+01 1.47340e+00 107 2005 9 5.20445e+01 2.26813e+00 72 2005 10 4.20442e+01 2.83513e+00 240 2005 11 3.42578e+01 1.85199e+00 218 2005 12 3.00840e+01 5.42566e-01 176 2006 1 3.22020e+01 1.84198e+00 192 2006 2 3.96015e+01 2.11156e+00 170 2006 3 4.86194e+01 2.86535e+00 224 2006 4 5.72665e+01 2.08727e+00 188 2006 5 6.17660e+01 8.30912e-01 160 2006 6 6.28762e+01 8.16013e-02 144 2006 7 6.16308e+01 6.50759e-01 112 2006 8 5.80271e+01 1.76610e+00 160 2006 9 5.00436e+01 1.98655e+00 175 2006 10 4.27712e+01 3.18061e+00 224 2006 11 3.42496e+01 1.84768e+00 211 2006 12 3.00156e+01 4.43516e-01 128 2007 1 3.24033e+01 1.85737e+00 140 2007 2 4.04314e+01 2.21797e+00 160 2007 3 4.95547e+01 2.48936e+00 325 2007 4 5.79801e+01 1.79395e+00 201 2007 5 6.17560e+01 9.66370e-01 144 2007 6 6.27959e+01 1.83456e-01 96 2007 7 6.15480e+01 5.13478e-01 96 2007 8 5.71991e+01 1.48910e+00 128 2007 9 4.97296e+01 2.45639e+00 102 2007 10 4.37382e+01 9.94840e-01 96 2007 11 3.51505e+01 1.86393e+00 256 2007 12 3.01668e+01 4.62667e-01 170 2008 1 3.22793e+01 1.93623e+00 192 2008 2 3.95835e+01 2.92832e+00 208 2008 3 5.09956e+01 2.54171e+00 192 2008 4 5.80735e+01 1.90616e+00 192 2008 5 6.19906e+01 8.04058e-01 160 2008 6 6.28898e+01 1.22702e-01 128 2008 7 6.19973e+01 4.66006e-01 96 2008 8 5.75010e+01 1.89175e+00 79 2008 9 5.11500e+01 1.75604e+00 133 2008 10 4.18902e+01 2.80846e+00 264 2008 11 3.44371e+01 1.78048e+00 274 2008 12 2.99455e+01 5.26934e-01 229 2009 1 3.27255e+01 1.70034e+00 192 2009 2 4.04666e+01 2.67570e+00 240 2009 3 4.84864e+01 2.11395e+00 208 2009 4 5.81166e+01 1.81985e+00 144 2009 5 6.17278e+01 1.00449e+00 93 2009 6 6.28022e+01 9.88880e-02 80 2009 7 6.18924e+01 5.60378e-01 67 2009 8 5.75172e+01 1.37917e+00 85 2009 9 5.20840e+01 1.84682e+00 69 2009 10 4.15558e+01 2.83245e+00 153 2009 11 3.40925e+01 2.12145e+00 208 2009 12 2.97789e+01 1.04221e-01 48 2010 1 3.16569e+01 1.67057e+00 160 2010 2 4.08311e+01 2.44010e+00 207 2010 3 4.91562e+01 3.18689e+00 202 2010 4 5.72255e+01 1.77577e+00 187 2010 5 6.22221e+01 5.94208e-01 107 2010 6 6.27616e+01 1.22960e-01 160 2010 7 6.14878e+01 7.46948e-01 64 2010 8 5.87352e+01 1.28492e+00 114 2010 9 5.15175e+01 2.26146e+00 145 2010 10 4.27276e+01 2.71312e+00 351 2010 11 3.41698e+01 1.87364e+00 304 2010 12 3.01281e+01 5.12250e-01 256 2011 1 3.23463e+01 1.73059e+00 192 2011 2 4.14064e+01 1.72486e+00 208 2011 3 4.89651e+01 2.45333e+00 208 2011 4 5.71487e+01 1.71396e+00 216 2011 5 6.15706e+01 7.69495e-01 224 2011 6 6.30148e+01 1.42486e-01 128 2011 7 6.16860e+01 8.92214e-01 82 2011 8 5.76799e+01 1.52185e+00 153 2011 9 5.10309e+01 2.20490e+00 143 2011 10 4.23999e+01 2.91697e+00 240 2011 11 3.46292e+01 2.09528e+00 223 2011 12 3.00430e+01 5.36808e-01 192 2012 1 3.25513e+01 2.04283e+00 256 2012 2 3.97991e+01 1.65163e+00 48 2012 3 4.98220e+01 2.16871e+00 216 2012 4 5.77221e+01 1.87716e+00 205 2012 5 6.18830e+01 8.34975e-01 128 2012 6 6.29396e+01 2.21737e-01 80 2012 7 6.19606e+01 5.27433e-01 104 2012 8 5.76290e+01 1.07755e+00 96 2012 9 5.05006e+01 2.72161e+00 61 2012 10 4.18304e+01 2.11050e+00 240 2012 11 3.46271e+01 2.17375e+00 256 2012 12 3.01800e+01 4.36303e-01 152 2013 1 3.33364e+01 1.48567e+00 192 2013 2 4.02370e+01 2.55852e+00 176 2013 3 5.02723e+01 2.78443e+00 208 2013 4 5.57802e+01 9.36365e-01 80 2013 5 6.23722e+01 3.82168e-01 128 2013 6 6.28697e+01 9.94739e-02 91 2013 7 6.19697e+01 2.57094e-01 29 2013 8 5.84961e+01 1.82587e+00 81 2013 9 5.24035e+01 1.91534e+00 115 2013 10 4.16174e+01 2.55047e+00 200 2013 11 3.46661e+01 2.06443e+00 128 2013 12 2.98764e+01 3.71895e-01 160 2014 1 3.22892e+01 1.24296e+00 120 2014 2 4.12169e+01 1.94727e+00 160 2014 3 5.00190e+01 2.81249e+00 178 2014 4 5.74868e+01 1.98084e+00 144 2014 5 6.17369e+01 7.52080e-01 144 2014 6 6.27612e+01 9.98005e-02 140 2014 7 6.16914e+01 7.41881e-01 96 2014 8 5.80661e+01 1.32330e+00 202 2014 9 5.21742e+01 1.67926e+00 65 2014 10 4.23312e+01 2.52164e+00 259 2014 11 3.43342e+01 2.22030e+00 224 2014 12 3.00495e+01 3.35789e-01 184 2015 1 3.28252e+01 1.79284e+00 208 2015 2 3.96813e+01 1.93045e+00 188 2015 3 4.99518e+01 2.57915e+00 112 2015 4 5.45983e+01 4.95780e-01 64 2015 5 6.16514e+01 7.78351e-01 169 2015 6 6.27525e+01 1.35138e-01 144 2015 7 6.21373e+01 3.00826e-01 80 2015 8 5.75076e+01 1.11380e+00 112 2015 9 5.07573e+01 1.32793e+00 84 2015 10 4.16614e+01 2.16721e+00 224 2015 11 3.39382e+01 2.07514e+00 192 2015 12 3.00981e+01 3.06006e-01 128 2016 1 3.26143e+01 1.41804e+00 148 2016 2 4.04027e+01 2.48325e+00 272 2016 3 4.86683e+01 2.43693e+00 151 2016 4 5.67717e+01 1.89667e+00 117 2016 5 6.16944e+01 6.63155e-01 160 2016 6 6.27944e+01 1.52063e-01 146 2016 7 6.18894e+01 6.55395e-01 154 2016 8 5.72294e+01 1.26825e+00 123 2016 9 5.03066e+01 2.33417e+00 144 2016 10 4.18154e+01 2.68064e+00 298 2016 11 3.45124e+01 1.85361e+00 224 2016 12 2.99729e+01 4.87974e-01 192 2017 1 3.20570e+01 1.75332e+00 133 2017 2 4.03714e+01 2.67630e+00 304 2017 3 5.00599e+01 2.55156e+00 259 2017 4 5.70724e+01 1.72542e+00 136 2017 5 6.18097e+01 7.60666e-01 173 2017 6 6.26661e+01 1.51159e-01 80 2017 7 6.18969e+01 8.16937e-01 119 2017 8 5.77930e+01 1.01493e+00 116 2017 9 5.10094e+01 2.51300e+00 173 2017 10 4.11215e+01 2.77089e+00 181 2017 11 3.41423e+01 2.05094e+00 274 2017 12 2.99932e+01 3.86388e-01 112 2018 1 3.23170e+01 1.84661e+00 224 2018 2 4.11460e+01 1.89796e+00 96 2018 3 4.90316e+01 2.75687e+00 256 2018 4 5.74515e+01 2.05484e+00 152 2018 5 6.14414e+01 7.95062e-01 118 2018 6 6.27479e+01 7.98465e-02 128 2018 7 6.14843e+01 5.13672e-01 96 2018 8 5.81736e+01 1.02933e+00 48 2018 9 5.16056e+01 1.98578e+00 210 2018 10 4.20205e+01 2.73390e+00 224 2018 11 3.40376e+01 1.97824e+00 98 2018 12 3.01137e+01 4.19521e-01 128 2019 1 3.22711e+01 1.75220e+00 208 2019 2 3.95035e+01 2.52646e+00 64 2019 3 4.99091e+01 2.50177e+00 192 2019 4 5.81910e+01 1.66249e+00 114 2019 5 6.18160e+01 8.38686e-01 208 2019 6 6.28544e+01 2.20982e-01 64 2019 7 6.16316e+01 9.64934e-01 96 2019 8 5.74518e+01 1.71554e+00 133 2019 9 5.13425e+01 2.31513e+00 271 2019 10 4.22173e+01 3.02862e+00 183 2019 11 3.40917e+01 1.98639e+00 176 2019 12 3.01321e+01 4.97040e-01 144 2020 1 3.15073e+01 1.55106e+00 193 2020 2 4.02803e+01 3.48806e+00 144 2020 3 4.93257e+01 2.04834e+00 128 2020 4 5.76439e+01 2.34017e+00 144 2020 5 6.14811e+01 7.36904e-01 160 2020 6 6.29500e+01 9.66992e-02 128 2020 7 6.15322e+01 2.54755e-01 48 2020 8 5.98162e+01 3.71100e-01 64 2020 9 5.08748e+01 2.57719e+00 83 2020 10 4.24318e+01 2.67532e+00 176 2020 11 3.45301e+01 1.84291e+00 272 2020 12 2.98429e+01 2.72552e-01 240 2021 1 3.22715e+01 1.91938e+00 128 2021 2 4.15020e+01 2.51827e+00 112 2021 3 4.86255e+01 2.13591e+00 128 2021 4 5.75543e+01 2.20883e+00 201 2021 5 6.22873e+01 6.39275e-01 180 2021 6 6.28901e+01 1.20404e-01 73 2021 7 6.12699e+01 5.65757e-01 44 2021 8 5.87253e+01 1.10340e+00 112 2021 9 5.11474e+01 2.69391e+00 119 2021 10 4.19113e+01 2.08318e+00 161 2021 11 3.40373e+01 1.88629e+00 208 2021 12 2.98409e+01 4.36731e-01 156 2022 1 3.25649e+01 1.86878e+00 192 2022 2 4.04977e+01 2.70899e+00 176 2022 3 4.93583e+01 2.99977e+00 224 2022 4 5.90065e+01 2.59797e-01 79 2022 5 6.16718e+01 9.69377e-01 160 2022 6 6.28209e+01 1.69306e-01 208 2022 7 6.15196e+01 6.88043e-01 124 2022 8 5.79928e+01 1.65420e+00 94 2022 9 5.02990e+01 1.86697e+00 128 2022 10 4.26809e+01 2.67856e+00 272 2022 11 3.47975e+01 2.14887e+00 128 2022 12 2.98826e+01 3.91511e-01 180 2023 1 3.22337e+01 1.54285e+00 224 2023 2 4.07543e+01 2.33476e+00 192 2023 3 4.81721e+01 2.02604e+00 141 2023 4 5.79904e+01 1.62147e+00 126 2023 5 6.15264e+01 6.93817e-01 160 2023 6 6.29538e+01 1.11909e-01 96 2023 7 6.19959e+01 8.83589e-01 82 2023 8 5.73715e+01 1.31487e+00 145 2023 9 5.15002e+01 1.60358e+00 144 2023 10 4.07257e+01 2.13745e+00 177 2023 11 3.52091e+01 1.94365e+00 192 2023 12 2.97099e+01 1.64316e-01 64 2024 1 3.20774e+01 1.82946e+00 128 2024 2 4.07820e+01 2.34221e+00 160 2024 3 5.12273e+01 2.61523e+00 80 2024 4 nan nan 0