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 6.16772e+01 7.12038e-01 96 2002 8 5.78078e+01 7.68072e-01 80 2002 9 5.00572e+01 2.32646e+00 144 2002 10 4.42557e+01 2.29888e+00 176 2002 11 3.38872e+01 1.88171e+00 256 2002 12 2.98386e+01 5.10760e-01 192 2003 1 3.18723e+01 1.44453e+00 272 2003 2 3.95957e+01 2.45507e+00 144 2003 3 5.09733e+01 2.07552e+00 80 2003 4 5.76094e+01 1.87600e+00 205 2003 5 6.23305e+01 7.51251e-01 32 2003 6 6.32437e+01 1.58600e-01 96 2003 7 6.14431e+01 3.38107e-01 41 2003 8 5.62086e+01 8.72340e-01 91 2003 9 5.19800e+01 2.33233e+00 160 2003 10 4.20476e+01 2.62932e+00 208 2003 11 3.42107e+01 1.98899e+00 239 2003 12 2.97344e+01 3.91405e-01 192 2004 1 3.25173e+01 1.48248e+00 160 2004 2 4.14592e+01 2.17258e+00 80 2004 3 4.99328e+01 2.35376e+00 237 2004 4 5.77698e+01 2.01665e+00 145 2004 5 6.17713e+01 9.07570e-01 192 2004 6 6.32376e+01 1.11118e-01 80 2004 7 6.23000e+01 4.07840e-01 94 2004 8 5.68580e+01 1.48518e+00 128 2004 9 5.17051e+01 2.03408e+00 112 2004 10 4.23411e+01 2.73288e+00 135 2004 11 3.38729e+01 2.13023e+00 178 2004 12 2.95298e+01 1.71568e-01 128 2005 1 3.19756e+01 1.40377e+00 150 2005 2 3.90462e+01 1.55026e+00 134 2005 3 4.92384e+01 3.03986e+00 204 2005 4 5.71572e+01 1.74993e+00 141 2005 5 6.18462e+01 7.62700e-01 208 2005 6 6.32431e+01 3.91374e-01 118 2005 7 6.15304e+01 5.86474e-01 112 2005 8 5.68681e+01 1.40208e+00 77 2005 9 5.10110e+01 2.78838e+00 117 2005 10 4.15814e+01 2.65281e+00 228 2005 11 3.44261e+01 1.99041e+00 248 2005 12 2.97883e+01 4.67166e-01 224 2006 1 3.19277e+01 1.77310e+00 208 2006 2 3.95866e+01 2.34755e+00 176 2006 3 4.89430e+01 2.64725e+00 272 2006 4 5.73620e+01 1.93644e+00 194 2006 5 6.18599e+01 8.33439e-01 176 2006 6 6.31862e+01 3.28693e-01 142 2006 7 6.17717e+01 6.89240e-01 144 2006 8 5.85442e+01 1.35483e+00 160 2006 9 5.03629e+01 2.44675e+00 165 2006 10 4.31146e+01 3.03876e+00 224 2006 11 3.44799e+01 1.95114e+00 225 2006 12 2.97955e+01 3.82715e-01 107 2007 1 3.17424e+01 1.64670e+00 124 2007 2 4.06045e+01 2.42149e+00 180 2007 3 4.94701e+01 2.63565e+00 352 2007 4 5.76075e+01 2.05827e+00 196 2007 5 6.17242e+01 8.39093e-01 160 2007 6 6.32570e+01 1.75642e-01 128 2007 7 6.17467e+01 5.43834e-01 80 2007 8 5.74091e+01 1.39440e+00 112 2007 9 4.98634e+01 2.51194e+00 129 2007 10 4.43848e+01 1.21740e+00 133 2007 11 3.48225e+01 1.94934e+00 272 2007 12 2.98442e+01 4.14667e-01 176 2008 1 3.18561e+01 1.93010e+00 224 2008 2 3.97157e+01 2.98764e+00 267 2008 3 5.01856e+01 2.76747e+00 208 2008 4 5.83360e+01 1.30685e+00 189 2008 5 6.21655e+01 9.14286e-01 128 2008 6 6.32779e+01 1.30016e-01 144 2008 7 6.20847e+01 4.09340e-01 80 2008 8 5.74741e+01 2.22075e+00 96 2008 9 5.05438e+01 2.54665e+00 144 2008 10 4.19308e+01 2.80757e+00 272 2008 11 3.43572e+01 1.73407e+00 256 2008 12 2.99145e+01 5.78469e-01 176 2009 1 3.25513e+01 1.63362e+00 144 2009 2 4.02165e+01 2.75859e+00 224 2009 3 4.89085e+01 2.41123e+00 224 2009 4 5.77221e+01 1.96135e+00 157 2009 5 6.17464e+01 1.11731e+00 110 2009 6 6.32628e+01 1.14939e-01 63 2009 7 6.17979e+01 8.09138e-01 112 2009 8 5.73303e+01 1.37968e+00 69 2009 9 5.09214e+01 2.11550e+00 136 2009 10 4.21516e+01 2.91877e+00 240 2009 11 3.36609e+01 1.94288e+00 150 2009 12 2.95744e+01 1.13445e-01 48 2010 1 3.17643e+01 1.64084e+00 180 2010 2 4.06956e+01 2.24533e+00 211 2010 3 4.90179e+01 3.12074e+00 213 2010 4 5.70049e+01 1.58736e+00 217 2010 5 6.18482e+01 7.43076e-01 102 2010 6 6.32140e+01 9.44218e-02 158 2010 7 6.14045e+01 8.19854e-01 80 2010 8 5.87463e+01 1.35708e+00 48 2010 9 5.10297e+01 1.97515e+00 219 2010 10 4.27629e+01 2.72543e+00 320 2010 11 3.39586e+01 1.89148e+00 298 2010 12 2.99431e+01 4.82606e-01 241 2011 1 3.24385e+01 1.70765e+00 211 2011 2 4.06753e+01 1.29998e+00 160 2011 3 4.94476e+01 2.39987e+00 216 2011 4 5.69903e+01 1.67696e+00 224 2011 5 6.17575e+01 7.91323e-01 188 2011 6 6.33932e+01 1.64990e-01 160 2011 7 6.14538e+01 9.95722e-01 128 2011 8 5.73968e+01 1.35581e+00 160 2011 9 5.08267e+01 2.36196e+00 160 2011 10 4.22641e+01 2.96079e+00 285 2011 11 3.44249e+01 2.16439e+00 240 2011 12 2.98064e+01 5.22326e-01 272 2012 1 3.22248e+01 2.06232e+00 256 2012 2 4.03511e+01 1.32570e+00 68 2012 3 4.98352e+01 2.21472e+00 208 2012 4 5.78965e+01 1.89100e+00 223 2012 5 6.18517e+01 8.27726e-01 160 2012 6 6.33723e+01 1.35571e-01 112 2012 7 6.21355e+01 2.91516e-01 96 2012 8 5.78081e+01 1.66629e+00 96 2012 9 5.09188e+01 2.79342e+00 132 2012 10 4.14085e+01 2.12160e+00 192 2012 11 3.41895e+01 2.20167e+00 256 2012 12 2.98624e+01 4.31463e-01 128 2013 1 3.34284e+01 1.27723e+00 144 2013 2 3.99083e+01 2.70602e+00 176 2013 3 4.98127e+01 3.01271e+00 227 2013 4 5.76699e+01 1.96536e+00 116 2013 5 6.21983e+01 7.04013e-01 112 2013 6 6.32286e+01 1.19104e-01 88 2013 7 6.14085e+01 3.15372e-01 43 2013 8 5.75546e+01 1.59804e+00 59 2013 9 5.12793e+01 2.38678e+00 155 2013 10 4.22486e+01 3.00377e+00 176 2013 11 3.43225e+01 2.15947e+00 152 2013 12 2.96369e+01 3.63550e-01 208 2014 1 3.21358e+01 1.19078e+00 128 2014 2 4.07122e+01 2.13644e+00 188 2014 3 4.97653e+01 2.77250e+00 179 2014 4 5.68506e+01 1.93427e+00 144 2014 5 6.17786e+01 8.07352e-01 128 2014 6 6.32489e+01 1.35485e-01 133 2014 7 6.16141e+01 8.37106e-01 142 2014 8 5.80397e+01 1.45336e+00 192 2014 9 5.24075e+01 1.78751e+00 119 2014 10 4.23070e+01 2.57542e+00 320 2014 11 3.43067e+01 2.20448e+00 256 2014 12 2.98749e+01 3.21328e-01 214 2015 1 3.27328e+01 1.92646e+00 176 2015 2 3.94852e+01 1.94052e+00 189 2015 3 5.01497e+01 2.97045e+00 80 2015 4 5.47786e+01 4.98190e-01 32 2015 5 6.18717e+01 8.59407e-01 224 2015 6 6.32743e+01 1.56491e-01 125 2015 7 6.17020e+01 5.89007e-01 80 2015 8 5.76716e+01 1.22315e+00 96 2015 9 5.16190e+01 1.90071e+00 112 2015 10 4.18487e+01 2.35494e+00 196 2015 11 3.36611e+01 2.23232e+00 176 2015 12 2.98978e+01 3.20596e-01 96 2016 1 3.24600e+01 1.34397e+00 160 2016 2 4.02741e+01 2.56084e+00 272 2016 3 4.98235e+01 2.93493e+00 149 2016 4 5.77847e+01 2.05204e+00 111 2016 5 6.18938e+01 8.19247e-01 160 2016 6 6.31925e+01 1.68485e-01 144 2016 7 6.14020e+01 6.81808e-01 133 2016 8 5.72074e+01 1.29595e+00 174 2016 9 5.05093e+01 2.75316e+00 181 2016 10 4.19546e+01 2.77542e+00 295 2016 11 3.44108e+01 1.88385e+00 208 2016 12 2.97292e+01 4.43233e-01 208 2017 1 3.20808e+01 1.71706e+00 160 2017 2 3.99045e+01 2.69454e+00 274 2017 3 5.00779e+01 2.41018e+00 240 2017 4 5.71142e+01 1.77155e+00 144 2017 5 6.17224e+01 8.65393e-01 112 2017 6 6.32938e+01 2.40335e-02 46 2017 7 6.16565e+01 7.95923e-01 133 2017 8 5.70804e+01 1.16565e+00 100 2017 9 5.06357e+01 2.45624e+00 208 2017 10 4.16247e+01 2.75508e+00 216 2017 11 3.39966e+01 2.07250e+00 284 2017 12 2.97805e+01 3.89991e-01 176 2018 1 3.22791e+01 1.79808e+00 223 2018 2 4.01126e+01 2.77425e+00 144 2018 3 4.86103e+01 2.93787e+00 208 2018 4 5.74295e+01 1.82593e+00 144 2018 5 6.14423e+01 8.82678e-01 139 2018 6 6.32706e+01 8.26997e-02 96 2018 7 6.16429e+01 5.58641e-01 97 2018 8 5.75411e+01 1.87903e+00 76 2018 9 5.11026e+01 1.89980e+00 171 2018 10 4.24612e+01 2.77909e+00 292 2018 11 3.38051e+01 2.08050e+00 96 2018 12 2.98414e+01 3.98222e-01 144 2019 1 3.23193e+01 1.70597e+00 208 2019 2 3.98949e+01 2.64932e+00 77 2019 3 5.02764e+01 2.39168e+00 228 2019 4 5.76676e+01 1.73559e+00 112 2019 5 6.18567e+01 8.90174e-01 236 2019 6 6.32968e+01 9.77513e-02 97 2019 7 6.16257e+01 1.06683e+00 118 2019 8 5.74361e+01 1.77430e+00 162 2019 9 5.09188e+01 2.61194e+00 240 2019 10 4.34307e+01 3.00452e+00 190 2019 11 3.36916e+01 2.07039e+00 176 2019 12 2.98710e+01 4.65719e-01 144 2020 1 3.15108e+01 1.65593e+00 176 2020 2 4.01993e+01 3.46632e+00 144 2020 3 4.90923e+01 2.34383e+00 158 2020 4 5.76012e+01 2.30449e+00 144 2020 5 6.15857e+01 6.81814e-01 144 2020 6 6.33656e+01 1.12984e-01 128 2020 7 6.15251e+01 4.27134e-01 59 2020 8 5.94612e+01 6.97159e-01 64 2020 9 5.11742e+01 2.48876e+00 128 2020 10 4.23520e+01 2.62281e+00 186 2020 11 3.41924e+01 1.86694e+00 272 2020 12 2.97667e+01 3.64171e-01 192 2021 1 3.19856e+01 2.02216e+00 112 2021 2 4.12426e+01 2.88289e+00 128 2021 3 4.79159e+01 1.48898e+00 112 2021 4 5.69001e+01 1.95188e+00 191 2021 5 6.21630e+01 5.66255e-01 160 2021 6 6.32175e+01 7.37583e-02 64 2021 7 6.14442e+01 4.83755e-01 95 2021 8 5.81642e+01 1.41354e+00 104 2021 9 5.10090e+01 2.66098e+00 107 2021 10 4.21040e+01 1.83525e+00 171 2021 11 3.37383e+01 1.81201e+00 240 2021 12 2.96008e+01 4.07078e-01 160 2022 1 3.24303e+01 2.07365e+00 192 2022 2 3.98320e+01 2.75111e+00 192 2022 3 4.99368e+01 3.13302e+00 207 2022 4 5.86680e+01 5.12371e-01 80 2022 5 6.19156e+01 7.49556e-01 128 2022 6 6.31717e+01 1.74856e-01 144 2022 7 6.14359e+01 9.43961e-01 76 2022 8 5.83128e+01 1.50422e+00 116 2022 9 5.05812e+01 1.93686e+00 192 2022 10 4.26301e+01 2.60811e+00 320 2022 11 3.49824e+01 1.70975e+00 150 2022 12 2.98368e+01 4.65190e-01 240 2023 1 3.22053e+01 1.44893e+00 240 2023 2 3.94681e+01 2.33246e+00 156 2023 3 4.89647e+01 2.12966e+00 176 2023 4 5.81797e+01 1.44069e+00 112 2023 5 6.15707e+01 7.07585e-01 118 2023 6 6.32690e+01 1.29329e-01 141 2023 7 6.20230e+01 1.13225e+00 100 2023 8 5.76861e+01 1.13162e+00 160 2023 9 5.16029e+01 1.48893e+00 154 2023 10 4.10616e+01 2.47394e+00 233 2023 11 3.50428e+01 1.87084e+00 224 2023 12 2.95315e+01 2.66572e-01 60 2024 1 3.19207e+01 1.86619e+00 140 2024 2 4.10957e+01 1.97667e+00 144 2024 3 4.98173e+01 3.11025e+00 149 2024 4 nan nan 0