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 6.14619e+01 7.24611e-01 52 2002 8 5.69605e+01 5.61010e-01 64 2002 9 5.06056e+01 2.51511e+00 128 2002 10 4.32442e+01 2.07676e+00 144 2002 11 3.37233e+01 2.25779e+00 208 2002 12 2.91070e+01 3.08305e-01 164 2003 1 3.17063e+01 1.56436e+00 238 2003 2 3.91775e+01 2.49708e+00 160 2003 3 nan nan 0 2003 4 5.88638e+01 1.34669e+00 31 2003 5 6.25076e+01 4.59746e-01 27 2003 6 6.27449e+01 2.08322e-01 64 2003 7 6.12029e+01 4.36446e-01 32 2003 8 5.81301e+01 2.49708e-03 16 2003 9 5.08425e+01 2.40500e+00 99 2003 10 4.16848e+01 2.70388e+00 201 2003 11 3.27849e+01 1.63370e+00 226 2003 12 2.91859e+01 4.08246e-01 178 2004 1 3.14440e+01 1.58024e+00 141 2004 2 4.09729e+01 2.71242e+00 49 2004 3 4.96607e+01 1.87796e+00 100 2004 4 5.74235e+01 1.47699e+00 96 2004 5 6.15455e+01 9.11502e-01 152 2004 6 6.27568e+01 1.37488e-01 72 2004 7 6.21498e+01 1.11968e-01 48 2004 8 5.61113e+01 9.55396e-01 56 2004 9 5.18461e+01 2.82993e+00 70 2004 10 4.35427e+01 1.85162e+00 74 2004 11 3.32423e+01 1.85135e+00 82 2004 12 2.89730e+01 1.88963e-01 110 2005 1 3.25934e+01 1.31353e+00 162 2005 2 3.95166e+01 2.61044e+00 99 2005 3 4.83331e+01 2.91223e+00 141 2005 4 5.42930e+01 4.30135e-03 16 2005 5 6.23289e+01 3.88160e-01 26 2005 6 6.26299e+01 1.38726e-01 48 2005 7 6.18831e+01 6.83690e-01 84 2005 8 5.84115e+01 6.28057e-01 48 2005 9 4.97919e+01 2.53926e+00 59 2005 10 4.16626e+01 2.66844e+00 244 2005 11 3.40633e+01 2.02921e+00 303 2005 12 2.93293e+01 5.35895e-01 208 2006 1 3.17412e+01 1.77071e+00 192 2006 2 3.87315e+01 2.14263e+00 160 2006 3 4.85942e+01 2.81501e+00 169 2006 4 5.66846e+01 2.26266e+00 129 2006 5 6.16802e+01 8.05929e-01 176 2006 6 6.28068e+01 5.59901e-02 96 2006 7 6.17132e+01 7.00398e-01 108 2006 8 5.80923e+01 1.50922e+00 112 2006 9 4.92321e+01 2.24948e+00 114 2006 10 4.19778e+01 3.14072e+00 203 2006 11 3.36297e+01 1.99413e+00 272 2006 12 2.91911e+01 3.44036e-01 148 2007 1 3.33567e+01 1.73850e+00 81 2007 2 4.00552e+01 2.44996e+00 160 2007 3 4.85998e+01 2.51962e+00 250 2007 4 5.73894e+01 2.01870e+00 176 2007 5 6.11073e+01 8.47144e-01 80 2007 6 6.27741e+01 1.53398e-01 52 2007 7 6.11991e+01 5.08238e-01 57 2007 8 5.70699e+01 1.57778e+00 95 2007 9 4.99673e+01 2.39786e+00 160 2007 10 4.40958e+01 1.03387e+00 112 2007 11 3.41182e+01 2.08661e+00 279 2007 12 2.93002e+01 4.42054e-01 144 2008 1 3.15603e+01 2.08872e+00 176 2008 2 3.94520e+01 2.94339e+00 298 2008 3 4.90275e+01 3.00608e+00 185 2008 4 5.72248e+01 1.60317e+00 176 2008 5 6.18760e+01 9.51463e-01 198 2008 6 6.28164e+01 1.76281e-01 115 2008 7 6.25604e+01 1.63951e-01 32 2008 8 5.95604e+01 1.02401e-01 32 2008 9 5.04410e+01 1.21878e+00 66 2008 10 4.16069e+01 2.93034e+00 219 2008 11 3.36869e+01 1.86931e+00 229 2008 12 2.93784e+01 5.18532e-01 226 2009 1 3.21079e+01 1.65210e+00 132 2009 2 3.96324e+01 2.66201e+00 211 2009 3 4.70773e+01 1.99896e+00 151 2009 4 5.65709e+01 2.04724e+00 70 2009 5 6.19170e+01 1.08923e+00 65 2009 6 6.28874e+01 1.87428e-01 92 2009 7 6.22447e+01 6.34582e-01 57 2009 8 5.75218e+01 1.39098e+00 112 2009 9 4.97964e+01 2.08337e+00 147 2009 10 4.15726e+01 2.68509e+00 176 2009 11 3.31737e+01 1.81905e+00 173 2009 12 2.95187e+01 3.83266e-01 32 2010 1 3.12535e+01 1.47497e+00 160 2010 2 4.01883e+01 1.72583e+00 112 2010 3 4.78969e+01 3.34357e+00 82 2010 4 5.71098e+01 1.72949e+00 82 2010 5 6.14314e+01 8.19530e-01 65 2010 6 6.27030e+01 7.83852e-02 151 2010 7 6.14194e+01 7.00350e-01 91 2010 8 5.95339e+01 2.52187e-01 29 2010 9 5.08530e+01 2.05375e+00 208 2010 10 4.24207e+01 2.79975e+00 363 2010 11 3.34470e+01 1.96971e+00 293 2010 12 2.94447e+01 5.00744e-01 256 2011 1 3.20159e+01 1.81153e+00 183 2011 2 4.00916e+01 1.26850e+00 144 2011 3 4.82013e+01 2.12787e+00 160 2011 4 5.62411e+01 1.77100e+00 142 2011 5 6.19123e+01 7.48292e-01 164 2011 6 6.29474e+01 1.01201e-01 112 2011 7 6.10529e+01 6.94573e-01 118 2011 8 5.71130e+01 1.07009e+00 127 2011 9 5.04602e+01 2.39801e+00 165 2011 10 4.20630e+01 2.85936e+00 320 2011 11 3.39895e+01 2.26781e+00 240 2011 12 2.93054e+01 5.49973e-01 256 2012 1 3.16212e+01 1.91259e+00 240 2012 2 3.96601e+01 1.69828e+00 64 2012 3 4.94154e+01 2.53997e+00 219 2012 4 5.73523e+01 1.91471e+00 224 2012 5 6.14084e+01 9.36382e-01 144 2012 6 6.28993e+01 1.03713e-02 12 2012 7 6.13100e+01 3.82455e-01 48 2012 8 5.98460e+01 3.16145e-03 8 2012 9 4.76610e+01 5.61814e-01 29 2012 10 4.08814e+01 2.73758e+00 127 2012 11 3.35464e+01 2.32434e+00 208 2012 12 2.93799e+01 3.89205e-01 144 2013 1 3.31671e+01 1.18704e+00 123 2013 2 3.90984e+01 2.48725e+00 117 2013 3 4.82537e+01 3.04181e+00 125 2013 4 5.65868e+01 1.64896e+00 69 2013 5 6.22330e+01 3.44596e-01 41 2013 6 6.28106e+01 1.12068e-01 128 2013 7 nan nan 0 2013 8 nan nan 0 2013 9 5.11189e+01 2.20742e+00 126 2013 10 4.17631e+01 2.69466e+00 111 2013 11 3.39742e+01 2.19051e+00 93 2013 12 2.90780e+01 3.72160e-01 138 2014 1 3.12606e+01 9.54706e-01 96 2014 2 4.04066e+01 2.03159e+00 107 2014 3 4.77973e+01 2.07272e+00 88 2014 4 nan nan 0 2014 5 nan nan 0 2014 6 6.26233e+01 1.43491e-03 14 2014 7 6.13915e+01 7.25895e-01 112 2014 8 5.74643e+01 1.77948e+00 86 2014 9 5.13612e+01 2.15644e+00 128 2014 10 4.17267e+01 2.47492e+00 320 2014 11 3.33607e+01 2.30166e+00 256 2014 12 2.93378e+01 3.60158e-01 221 2015 1 3.27390e+01 1.59253e+00 162 2015 2 3.91563e+01 1.90639e+00 114 2015 3 5.03092e+01 2.72936e+00 59 2015 4 5.98471e+01 2.64225e-03 16 2015 5 6.18261e+01 6.68612e-01 122 2015 6 6.27052e+01 1.92253e-01 66 2015 7 6.19509e+01 1.58882e-01 32 2015 8 5.78719e+01 1.49582e+00 80 2015 9 5.20159e+01 2.07511e+00 107 2015 10 4.16887e+01 1.98164e+00 195 2015 11 3.35162e+01 1.86120e+00 185 2015 12 2.93728e+01 3.18935e-01 94 2016 1 3.18119e+01 1.31888e+00 185 2016 2 3.96371e+01 2.62785e+00 266 2016 3 4.86045e+01 2.62762e+00 188 2016 4 5.65755e+01 1.67580e+00 48 2016 5 6.19291e+01 5.87397e-01 57 2016 6 6.27819e+01 1.52526e-01 139 2016 7 6.18507e+01 6.88297e-01 149 2016 8 5.74654e+01 8.47769e-01 131 2016 9 4.95475e+01 2.17336e+00 212 2016 10 4.18129e+01 3.00552e+00 210 2016 11 3.35260e+01 1.73111e+00 177 2016 12 2.93820e+01 5.63377e-01 173 2017 1 3.18982e+01 1.82198e+00 176 2017 2 3.92499e+01 2.83681e+00 218 2017 3 4.94264e+01 2.43964e+00 227 2017 4 5.64411e+01 1.64931e+00 154 2017 5 6.15479e+01 9.72482e-01 127 2017 6 6.25566e+01 2.45321e-01 31 2017 7 6.14309e+01 8.65115e-01 80 2017 8 5.78280e+01 1.19271e+00 96 2017 9 5.00937e+01 2.21406e+00 157 2017 10 4.11305e+01 2.48835e+00 237 2017 11 3.36953e+01 2.10736e+00 304 2017 12 2.92664e+01 3.83869e-01 192 2018 1 3.16681e+01 1.79446e+00 238 2018 2 4.07367e+01 2.06603e+00 114 2018 3 4.81460e+01 2.62453e+00 136 2018 4 5.81256e+01 1.98125e+00 96 2018 5 6.10981e+01 9.40778e-01 99 2018 6 6.27348e+01 1.33066e-01 75 2018 7 6.16495e+01 7.74319e-01 96 2018 8 5.54892e+01 2.51567e-01 37 2018 9 4.95859e+01 1.69578e+00 183 2018 10 4.13240e+01 2.56236e+00 316 2018 11 3.31034e+01 1.72501e+00 101 2018 12 2.93601e+01 4.64422e-01 101 2019 1 3.33872e+01 6.69838e-01 48 2019 2 nan nan 0 2019 3 4.80210e+01 3.10830e+00 93 2019 4 5.69930e+01 1.49579e+00 80 2019 5 6.18900e+01 8.34887e-01 173 2019 6 6.26745e+01 9.46443e-02 46 2019 7 6.14383e+01 9.54061e-01 78 2019 8 5.81738e+01 1.14571e+00 129 2019 9 4.94162e+01 2.31466e+00 115 2019 10 4.21294e+01 2.20704e+00 108 2019 11 3.33282e+01 1.58500e+00 128 2019 12 2.93205e+01 5.23853e-01 102 2020 1 3.14477e+01 1.69121e+00 114 2020 2 4.00874e+01 3.10581e+00 176 2020 3 4.84099e+01 1.94933e+00 125 2020 4 5.65646e+01 2.37856e+00 72 2020 5 6.08467e+01 6.83693e-01 128 2020 6 6.28910e+01 4.91011e-03 18 2020 7 6.13341e+01 2.09676e-01 55 2020 8 5.95331e+01 4.46072e-01 32 2020 9 5.14853e+01 1.67716e+00 52 2020 10 4.09348e+01 2.29477e+00 151 2020 11 3.39356e+01 2.04725e+00 119 2020 12 2.92152e+01 3.98046e-01 137 2021 1 3.14010e+01 1.97657e+00 64 2021 2 4.01650e+01 2.72707e+00 64 2021 3 4.93380e+01 1.73371e+00 54 2021 4 5.75512e+01 1.87130e+00 15 2021 5 6.25897e+01 3.07862e-01 76 2021 6 6.28295e+01 4.63090e-02 48 2021 7 6.15664e+01 7.25865e-01 51 2021 8 5.73256e+01 1.22448e+00 60 2021 9 5.12790e+01 2.16616e+00 77 2021 10 3.87070e+01 9.83211e-01 79 2021 11 3.31698e+01 1.94906e+00 117 2021 12 2.91625e+01 3.49236e-01 48 2022 1 3.17350e+01 1.79997e+00 189 2022 2 4.04259e+01 2.54269e+00 144 2022 3 4.88889e+01 2.94513e+00 192 2022 4 nan nan 0 2022 5 6.26413e+01 6.42336e-02 32 2022 6 6.28098e+01 1.47829e-01 131 2022 7 6.11013e+01 6.46136e-01 96 2022 8 5.79856e+01 1.69445e+00 142 2022 9 4.84540e+01 1.22419e+00 63 2022 10 4.17985e+01 2.43679e+00 270 2022 11 3.49901e+01 1.70323e+00 113 2022 12 2.92806e+01 4.90957e-01 193 2023 1 3.16894e+01 1.54601e+00 204 2023 2 3.94170e+01 2.72079e+00 160 2023 3 4.87440e+01 2.10061e+00 160 2023 4 5.73279e+01 1.79062e+00 63 2023 5 6.10653e+01 8.57633e-01 112 2023 6 6.27688e+01 1.94049e-01 81 2023 7 6.23484e+01 8.06917e-02 32 2023 8 5.76447e+01 1.35703e+00 96 2023 9 5.24127e+01 1.55043e+00 32 2023 10 4.10165e+01 2.63214e+00 167 2023 11 3.42055e+01 2.24318e+00 192 2023 12 2.90371e+01 2.87872e-01 33 2024 1 3.43140e+01 0.00000e+00 2 2024 2 4.10453e+01 1.99820e+00 116 2024 3 5.13801e+01 2.25943e+00 69 2024 4 nan nan 0