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 6.19486e+01 1.67420e-02 32 2002 8 5.68726e+01 1.19509e+00 112 2002 9 4.98126e+01 2.43403e+00 108 2002 10 4.34527e+01 1.76503e+00 140 2002 11 3.36547e+01 2.00420e+00 216 2002 12 2.94636e+01 5.81325e-01 192 2003 1 3.11441e+01 1.26173e+00 242 2003 2 3.93351e+01 2.31329e+00 170 2003 3 4.95534e+01 1.43800e+00 45 2003 4 5.74492e+01 1.57275e+00 40 2003 5 6.27478e+01 3.08964e-01 32 2003 6 6.29417e+01 1.06490e-01 34 2003 7 6.12881e+01 1.49518e-03 16 2003 8 5.71423e+01 2.36935e+00 35 2003 9 5.17038e+01 1.80879e+00 105 2003 10 4.20215e+01 2.85129e+00 222 2003 11 3.39433e+01 1.80774e+00 243 2003 12 2.93176e+01 4.53588e-01 256 2004 1 3.15833e+01 1.76501e+00 128 2004 2 4.10293e+01 2.17992e+00 80 2004 3 4.78023e+01 2.21562e+00 99 2004 4 5.70148e+01 2.05862e+00 106 2004 5 6.17273e+01 1.11052e+00 104 2004 6 6.29627e+01 5.21132e-02 66 2004 7 6.15944e+01 7.03097e-01 76 2004 8 5.72257e+01 1.66092e+00 126 2004 9 4.98676e+01 2.35253e+00 60 2004 10 4.22124e+01 2.56197e+00 92 2004 11 3.35502e+01 2.28990e+00 154 2004 12 2.91090e+01 1.73280e-01 115 2005 1 3.22664e+01 1.54699e+00 188 2005 2 3.89326e+01 1.94266e+00 125 2005 3 4.90521e+01 3.21408e+00 162 2005 4 5.65805e+01 2.00978e+00 56 2005 5 nan nan 0 2005 6 6.29321e+01 1.77171e-01 67 2005 7 6.15504e+01 4.60093e-01 65 2005 8 5.76044e+01 6.83653e-01 52 2005 9 4.76429e+01 6.33330e-01 50 2005 10 4.18393e+01 2.79274e+00 252 2005 11 3.41868e+01 1.92760e+00 305 2005 12 2.93944e+01 5.79277e-01 237 2006 1 3.18170e+01 1.80481e+00 230 2006 2 3.86948e+01 2.12178e+00 160 2006 3 4.86715e+01 2.95885e+00 246 2006 4 5.66655e+01 1.78230e+00 110 2006 5 6.20154e+01 7.18743e-01 128 2006 6 6.30061e+01 5.56236e-02 96 2006 7 6.13943e+01 8.70264e-01 69 2006 8 5.79840e+01 1.94475e+00 80 2006 9 4.96336e+01 2.11528e+00 128 2006 10 4.21242e+01 2.91343e+00 208 2006 11 3.41791e+01 1.99157e+00 236 2006 12 2.93382e+01 4.36884e-01 120 2007 1 3.18354e+01 1.70335e+00 144 2007 2 4.01838e+01 2.25301e+00 243 2007 3 4.93130e+01 2.57195e+00 254 2007 4 5.73401e+01 1.94151e+00 186 2007 5 6.14134e+01 1.09859e+00 26 2007 6 6.29878e+01 1.42551e-01 32 2007 7 6.10532e+01 6.79980e-01 92 2007 8 5.71480e+01 1.54511e+00 79 2007 9 5.09239e+01 2.35094e+00 147 2007 10 4.38858e+01 2.07302e+00 162 2007 11 3.40997e+01 2.08283e+00 288 2007 12 2.94682e+01 4.58913e-01 142 2008 1 3.14558e+01 1.97498e+00 208 2008 2 3.97556e+01 2.86708e+00 260 2008 3 4.95608e+01 2.90926e+00 237 2008 4 5.74891e+01 1.87530e+00 157 2008 5 6.20534e+01 9.70377e-01 184 2008 6 6.30791e+01 2.16945e-01 68 2008 7 6.17808e+01 5.09805e-01 80 2008 8 5.73646e+01 2.05463e+00 32 2008 9 5.04317e+01 2.04722e+00 144 2008 10 4.20348e+01 2.61316e+00 223 2008 11 3.37258e+01 1.73713e+00 219 2008 12 2.95910e+01 6.22440e-01 176 2009 1 3.20285e+01 1.92617e+00 187 2009 2 3.95905e+01 2.48412e+00 240 2009 3 4.74785e+01 2.06733e+00 176 2009 4 5.72289e+01 2.07330e+00 155 2009 5 6.12025e+01 2.69662e-01 32 2009 6 6.30359e+01 1.24323e-01 93 2009 7 6.22213e+01 9.84122e-01 52 2009 8 5.73377e+01 1.41464e+00 110 2009 9 5.04794e+01 2.26400e+00 165 2009 10 4.19743e+01 2.84579e+00 196 2009 11 3.34344e+01 1.54833e+00 141 2009 12 2.91567e+01 1.20457e-01 48 2010 1 3.11762e+01 1.65838e+00 172 2010 2 3.84934e+01 2.29822e+00 98 2010 3 4.82469e+01 3.67933e+00 139 2010 4 5.69625e+01 1.72087e+00 64 2010 5 6.11121e+01 7.79712e-01 34 2010 6 6.29184e+01 8.53799e-02 109 2010 7 6.11450e+01 7.38830e-01 80 2010 8 5.82656e+01 1.32146e+00 49 2010 9 5.07190e+01 2.17769e+00 141 2010 10 4.21076e+01 2.70008e+00 226 2010 11 3.36658e+01 1.95387e+00 215 2010 12 2.95859e+01 5.46678e-01 261 2011 1 3.17937e+01 1.80221e+00 170 2011 2 4.06586e+01 1.77953e+00 176 2011 3 4.90125e+01 2.19222e+00 176 2011 4 5.65638e+01 1.93263e+00 139 2011 5 6.22615e+01 6.26891e-01 125 2011 6 6.31439e+01 8.63791e-02 71 2011 7 6.05212e+01 5.94775e-01 52 2011 8 5.66524e+01 1.15404e+00 96 2011 9 5.07451e+01 2.35747e+00 160 2011 10 4.25721e+01 2.95333e+00 249 2011 11 3.42302e+01 2.15633e+00 240 2011 12 2.94457e+01 5.83722e-01 264 2012 1 3.14251e+01 1.84577e+00 272 2012 2 4.03402e+01 1.21675e+00 48 2012 3 4.97710e+01 2.37267e+00 202 2012 4 5.76817e+01 1.98122e+00 186 2012 5 6.17708e+01 8.78571e-01 108 2012 6 6.30107e+01 3.07213e-03 16 2012 7 6.15587e+01 5.88926e-03 32 2012 8 nan nan 0 2012 9 4.99934e+01 2.46677e+00 94 2012 10 4.23726e+01 2.28874e+00 167 2012 11 3.43931e+01 2.06563e+00 177 2012 12 2.95240e+01 4.51615e-01 128 2013 1 3.27169e+01 1.43652e+00 176 2013 2 3.98139e+01 2.73266e+00 143 2013 3 4.83952e+01 2.78300e+00 140 2013 4 5.67504e+01 1.73283e+00 90 2013 5 6.18587e+01 7.22797e-01 51 2013 6 6.30755e+01 8.15058e-02 82 2013 7 6.13020e+01 1.13147e-02 3 2013 8 5.78045e+01 7.19113e-01 35 2013 9 5.05657e+01 2.13817e+00 99 2013 10 4.15795e+01 2.77560e+00 145 2013 11 3.39730e+01 2.12831e+00 151 2013 12 2.94104e+01 4.12655e-01 160 2014 1 3.12209e+01 1.31231e+00 128 2014 2 4.07753e+01 1.56766e+00 128 2014 3 4.88653e+01 2.24138e+00 136 2014 4 5.51162e+01 6.35608e-01 32 2014 5 nan nan 0 2014 6 6.28260e+01 3.89419e-02 18 2014 7 6.14978e+01 7.00022e-01 77 2014 8 5.70006e+01 1.83419e+00 87 2014 9 5.22562e+01 1.83405e+00 90 2014 10 4.20066e+01 2.47825e+00 310 2014 11 3.34854e+01 2.18817e+00 243 2014 12 2.94603e+01 3.58487e-01 192 2015 1 3.26162e+01 1.74095e+00 209 2015 2 3.87174e+01 2.05297e+00 192 2015 3 4.93932e+01 2.72779e+00 98 2015 4 5.82180e+01 2.80960e+00 23 2015 5 6.21131e+01 4.63379e-01 59 2015 6 6.29106e+01 1.74764e-01 115 2015 7 6.15980e+01 1.56824e-01 21 2015 8 5.78940e+01 1.42552e+00 63 2015 9 5.14440e+01 2.42647e+00 128 2015 10 4.12609e+01 2.75448e+00 131 2015 11 3.37486e+01 2.03854e+00 191 2015 12 2.94352e+01 3.14434e-01 144 2016 1 3.21832e+01 1.28824e+00 208 2016 2 3.98663e+01 2.47630e+00 320 2016 3 4.84677e+01 2.86829e+00 176 2016 4 5.68765e+01 1.83617e+00 142 2016 5 6.15320e+01 3.02318e-01 41 2016 6 6.29062e+01 1.27771e-01 95 2016 7 6.13661e+01 7.08205e-01 132 2016 8 5.68770e+01 1.37967e+00 176 2016 9 5.07088e+01 2.50673e+00 182 2016 10 4.20175e+01 2.90299e+00 133 2016 11 3.37912e+01 1.84379e+00 163 2016 12 2.92442e+01 4.38099e-01 196 2017 1 3.16910e+01 1.77475e+00 179 2017 2 3.96573e+01 2.77248e+00 274 2017 3 4.94736e+01 2.43932e+00 224 2017 4 5.69620e+01 1.78288e+00 168 2017 5 6.17821e+01 8.40197e-01 93 2017 6 6.29409e+01 7.09769e-02 58 2017 7 6.14936e+01 8.04704e-01 69 2017 8 5.68619e+01 1.49026e+00 128 2017 9 5.05219e+01 2.30011e+00 104 2017 10 4.12523e+01 2.40784e+00 204 2017 11 3.41185e+01 2.03851e+00 244 2017 12 2.95543e+01 4.56320e-01 163 2018 1 3.18027e+01 1.72086e+00 223 2018 2 4.05701e+01 2.42788e+00 105 2018 3 4.84410e+01 2.42320e+00 198 2018 4 5.69667e+01 2.16300e+00 140 2018 5 6.14476e+01 9.95848e-01 99 2018 6 6.29792e+01 6.08007e-02 64 2018 7 6.17634e+01 7.82315e-01 72 2018 8 5.64012e+01 1.48758e+00 88 2018 9 4.96903e+01 1.81950e+00 120 2018 10 4.14601e+01 2.55394e+00 258 2018 11 3.36881e+01 2.03947e+00 64 2018 12 2.95304e+01 4.80565e-01 112 2019 1 3.20333e+01 1.56912e+00 101 2019 2 4.08232e+01 2.11885e+00 42 2019 3 4.75286e+01 1.92934e+00 108 2019 4 5.73167e+01 1.65475e+00 112 2019 5 6.19439e+01 8.32268e-01 135 2019 6 6.30550e+01 1.68600e-01 62 2019 7 6.16260e+01 1.12247e+00 93 2019 8 5.86210e+01 6.85716e-01 42 2019 9 4.84151e+01 1.38586e+00 63 2019 10 4.21672e+01 2.69047e+00 116 2019 11 3.38439e+01 2.22762e+00 166 2019 12 2.94062e+01 5.61357e-01 121 2020 1 3.15151e+01 1.56386e+00 160 2020 2 3.97148e+01 3.09977e+00 148 2020 3 4.87572e+01 2.35606e+00 144 2020 4 5.76488e+01 2.48135e+00 93 2020 5 6.13193e+01 8.38331e-01 106 2020 6 6.29760e+01 1.57522e-01 101 2020 7 6.13701e+01 4.35224e-01 39 2020 8 5.93800e+01 3.91290e-01 37 2020 9 5.14492e+01 1.70688e+00 64 2020 10 4.16947e+01 1.86684e+00 111 2020 11 3.40339e+01 1.87205e+00 164 2020 12 2.93841e+01 4.25423e-01 175 2021 1 3.15196e+01 1.76908e+00 97 2021 2 4.15086e+01 1.83376e+00 95 2021 3 4.79604e+01 2.01762e+00 80 2021 4 5.63676e+01 2.23649e+00 84 2021 5 6.25132e+01 6.26261e-01 120 2021 6 6.29543e+01 1.25051e-01 38 2021 7 6.25544e+01 8.31024e-04 9 2021 8 5.68278e+01 1.65458e-01 22 2021 9 5.11348e+01 2.52428e+00 108 2021 10 4.21074e+01 2.23759e+00 122 2021 11 3.39370e+01 1.97326e+00 80 2021 12 2.91169e+01 3.18197e-01 100 2022 1 3.18376e+01 1.92685e+00 222 2022 2 4.00646e+01 2.51304e+00 150 2022 3 4.88541e+01 2.77701e+00 171 2022 4 5.96538e+01 4.75738e-01 22 2022 5 6.16126e+01 9.36390e-01 101 2022 6 6.29272e+01 1.18867e-01 97 2022 7 6.16090e+01 1.00240e+00 56 2022 8 5.78066e+01 1.53966e+00 126 2022 9 4.97875e+01 1.97784e+00 107 2022 10 4.13090e+01 2.83135e+00 106 2022 11 3.46600e+01 1.88434e+00 87 2022 12 2.92505e+01 3.54744e-01 183 2023 1 3.13612e+01 1.55047e+00 197 2023 2 3.89638e+01 2.30163e+00 160 2023 3 4.87583e+01 2.23523e+00 158 2023 4 5.73818e+01 1.69977e+00 64 2023 5 6.10627e+01 7.60669e-01 87 2023 6 6.28758e+01 1.48026e-01 56 2023 7 6.15115e+01 3.35478e-03 16 2023 8 5.59590e+01 1.14850e+00 67 2023 9 5.15858e+01 1.60133e+00 84 2023 10 4.14088e+01 2.48298e+00 120 2023 11 3.45833e+01 2.55320e+00 131 2023 12 2.91144e+01 1.44891e-01 64 2024 1 3.07518e+01 1.86636e+00 67 2024 2 4.07587e+01 2.11088e+00 96 2024 3 5.11691e+01 2.96460e+00 95 2024 4 nan nan 0