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 6.25813e+01 1.16142e-01 3 2002 8 5.81057e+01 6.16970e-01 51 2002 9 5.06971e+01 2.63658e+00 72 2002 10 4.36219e+01 2.50542e+00 96 2002 11 3.36215e+01 2.24186e+00 155 2002 12 2.89339e+01 4.63233e-01 170 2003 1 3.10746e+01 1.43817e+00 211 2003 2 3.85067e+01 2.52792e+00 104 2003 3 5.15647e+01 6.09248e-01 40 2003 4 5.62713e+01 2.52552e+00 99 2003 5 6.15642e+01 4.93800e-01 12 2003 6 6.35664e+01 6.24248e-02 40 2003 7 6.15727e+01 2.81202e-01 18 2003 8 5.85740e+01 0.00000e+00 6 2003 9 5.10078e+01 2.50392e+00 62 2003 10 4.13649e+01 2.86456e+00 149 2003 11 3.30117e+01 2.11518e+00 190 2003 12 2.88376e+01 4.45698e-01 158 2004 1 3.11286e+01 1.54852e+00 138 2004 2 4.13162e+01 1.82299e+00 48 2004 3 4.90489e+01 2.07940e+00 144 2004 4 5.67188e+01 2.09142e+00 87 2004 5 6.22638e+01 8.83846e-01 75 2004 6 6.35501e+01 6.14918e-02 32 2004 7 6.27759e+01 3.58341e-03 14 2004 8 5.69114e+01 8.62866e-01 49 2004 9 5.08492e+01 2.75107e+00 71 2004 10 4.21512e+01 2.78770e+00 96 2004 11 3.32659e+01 1.99227e+00 115 2004 12 2.85407e+01 1.18879e-01 74 2005 1 3.22454e+01 1.63073e+00 101 2005 2 3.83489e+01 1.64166e+00 112 2005 3 4.82690e+01 3.02805e+00 136 2005 4 5.64399e+01 1.43150e+00 76 2005 5 6.21279e+01 9.94596e-01 48 2005 6 6.34548e+01 1.53332e-01 32 2005 7 6.22324e+01 6.03844e-01 59 2005 8 5.82383e+01 2.08550e+00 25 2005 9 4.68732e+01 2.71302e-03 15 2005 10 4.15159e+01 2.49089e+00 196 2005 11 3.30013e+01 1.83732e+00 172 2005 12 2.88905e+01 4.82905e-01 131 2006 1 3.19846e+01 1.99846e+00 97 2006 2 3.83297e+01 2.35698e+00 125 2006 3 4.83520e+01 2.98644e+00 200 2006 4 5.68886e+01 2.18054e+00 105 2006 5 6.22110e+01 9.49483e-01 93 2006 6 6.36516e+01 6.76138e-02 37 2006 7 6.21630e+01 4.25400e-01 32 2006 8 5.91187e+01 1.14917e+00 64 2006 9 4.99477e+01 2.68083e+00 79 2006 10 4.19339e+01 3.14488e+00 187 2006 11 3.36606e+01 2.18912e+00 195 2006 12 2.88271e+01 4.05786e-01 85 2007 1 3.36721e+01 5.49079e-01 32 2007 2 4.01045e+01 2.09774e+00 172 2007 3 4.90552e+01 2.98657e+00 181 2007 4 5.67876e+01 2.11019e+00 161 2007 5 6.17308e+01 1.19486e+00 50 2007 6 6.36270e+01 1.08054e-01 47 2007 7 6.19826e+01 7.13789e-01 67 2007 8 5.69944e+01 1.03759e+00 52 2007 9 4.95787e+01 2.36457e+00 64 2007 10 4.40332e+01 1.05881e+00 92 2007 11 3.37682e+01 2.05409e+00 196 2007 12 2.90128e+01 4.14580e-01 121 2008 1 3.14461e+01 2.00197e+00 173 2008 2 3.85584e+01 2.73663e+00 178 2008 3 5.00009e+01 2.70682e+00 155 2008 4 5.76690e+01 1.40987e+00 96 2008 5 6.25347e+01 8.65170e-01 117 2008 6 6.34402e+01 2.21692e-01 62 2008 7 6.30057e+01 2.64707e-01 32 2008 8 6.00433e+01 8.09716e-03 12 2008 9 4.99238e+01 1.26473e+00 96 2008 10 4.12563e+01 2.91984e+00 222 2008 11 3.37693e+01 1.73749e+00 214 2008 12 2.89167e+01 4.53288e-01 194 2009 1 3.16737e+01 1.46512e+00 122 2009 2 3.91846e+01 2.57748e+00 209 2009 3 4.71765e+01 2.04979e+00 130 2009 4 5.71239e+01 2.52230e+00 30 2009 5 6.22496e+01 1.04349e+00 65 2009 6 6.36749e+01 4.14665e-02 32 2009 7 6.28277e+01 5.27350e-01 20 2009 8 5.86750e+01 1.26206e+00 48 2009 9 5.30716e+01 1.41394e+00 47 2009 10 4.13050e+01 2.41071e+00 138 2009 11 3.31018e+01 1.93513e+00 143 2009 12 2.87392e+01 1.78517e-01 32 2010 1 3.06535e+01 1.48125e+00 101 2010 2 3.95960e+01 2.76308e+00 76 2010 3 4.71969e+01 3.02250e+00 142 2010 4 5.65669e+01 1.60636e+00 121 2010 5 6.19940e+01 7.21287e-01 32 2010 6 6.34002e+01 1.59528e-01 67 2010 7 6.19621e+01 8.68651e-01 24 2010 8 6.04064e+01 8.32624e-04 9 2010 9 5.06889e+01 2.22530e+00 153 2010 10 4.22052e+01 2.90247e+00 233 2010 11 3.33759e+01 1.89879e+00 236 2010 12 2.91251e+01 5.44823e-01 216 2011 1 3.14792e+01 1.70216e+00 167 2011 2 4.00688e+01 1.82223e+00 122 2011 3 4.90921e+01 1.67828e+00 112 2011 4 5.56449e+01 1.61957e+00 104 2011 5 6.22539e+01 5.94781e-01 83 2011 6 6.36215e+01 1.72829e-01 39 2011 7 6.14247e+01 4.36038e-01 42 2011 8 5.76094e+01 1.68468e+00 78 2011 9 5.18991e+01 1.82120e+00 105 2011 10 4.23493e+01 3.04150e+00 225 2011 11 3.37884e+01 2.18687e+00 164 2011 12 2.91256e+01 5.62445e-01 182 2012 1 3.22323e+01 2.00631e+00 134 2012 2 3.91954e+01 1.16843e+00 40 2012 3 4.87987e+01 2.25689e+00 173 2012 4 5.79803e+01 1.62142e+00 120 2012 5 6.18540e+01 5.42785e-01 70 2012 6 6.37865e+01 1.93543e-03 16 2012 7 6.22500e+01 5.35282e-01 48 2012 8 5.65250e+01 1.15537e-02 25 2012 9 5.14324e+01 2.62485e+00 62 2012 10 4.17557e+01 2.58762e+00 179 2012 11 3.32330e+01 2.37231e+00 156 2012 12 2.89691e+01 4.92253e-01 96 2013 1 3.29468e+01 1.46091e+00 127 2013 2 3.87845e+01 2.57597e+00 101 2013 3 4.81060e+01 2.45909e+00 80 2013 4 5.63239e+01 1.90350e+00 51 2013 5 6.25799e+01 5.08722e-01 65 2013 6 6.33700e+01 2.06293e-01 29 2013 7 nan nan 0 2013 8 5.81351e+01 8.94448e-01 32 2013 9 5.15229e+01 2.27560e+00 131 2013 10 4.08919e+01 2.90981e+00 139 2013 11 3.31326e+01 2.34576e+00 123 2013 12 2.87099e+01 3.14836e-01 136 2014 1 3.16819e+01 9.68002e-01 87 2014 2 3.94178e+01 2.29484e+00 155 2014 3 4.64732e+01 1.84723e+00 53 2014 4 5.71726e+01 1.60306e+00 52 2014 5 6.20920e+01 3.14865e-01 48 2014 6 6.34983e+01 1.26959e-01 47 2014 7 6.27566e+01 6.18713e-01 59 2014 8 5.82611e+01 2.23334e+00 50 2014 9 5.10321e+01 1.79934e+00 125 2014 10 4.20923e+01 2.82832e+00 264 2014 11 3.37224e+01 2.37078e+00 182 2014 12 2.90217e+01 3.93551e-01 137 2015 1 3.27649e+01 1.35269e+00 104 2015 2 3.82783e+01 1.87481e+00 98 2015 3 4.94026e+01 2.84716e+00 92 2015 4 5.52464e+01 1.88118e+00 62 2015 5 6.23317e+01 7.90586e-01 94 2015 6 6.35469e+01 1.26431e-01 57 2015 7 6.20833e+01 6.07151e-01 44 2015 8 5.74755e+01 6.08793e-01 27 2015 9 5.20944e+01 3.05485e-01 17 2015 10 4.08647e+01 2.11601e+00 194 2015 11 3.33246e+01 2.04330e+00 89 2015 12 2.90390e+01 3.35838e-01 92 2016 1 3.12331e+01 1.43843e+00 96 2016 2 3.99038e+01 2.55825e+00 201 2016 3 4.78472e+01 2.14724e+00 158 2016 4 5.52462e+01 1.67930e-01 16 2016 5 6.20172e+01 6.77031e-01 56 2016 6 6.34476e+01 1.70113e-01 95 2016 7 6.24998e+01 7.62072e-01 153 2016 8 5.68182e+01 8.03682e-01 107 2016 9 4.88440e+01 1.67646e+00 102 2016 10 4.13561e+01 2.86540e+00 275 2016 11 3.37959e+01 1.86560e+00 174 2016 12 2.88816e+01 5.09486e-01 155 2017 1 3.16636e+01 1.72188e+00 151 2017 2 4.00584e+01 2.22930e+00 131 2017 3 4.90144e+01 2.53923e+00 189 2017 4 5.63185e+01 1.78086e+00 99 2017 5 6.20967e+01 1.00554e+00 81 2017 6 6.35371e+01 3.32903e-02 20 2017 7 6.28940e+01 3.61542e-01 44 2017 8 5.76729e+01 1.52810e+00 46 2017 9 5.03313e+01 3.00539e+00 84 2017 10 4.13099e+01 2.65925e+00 188 2017 11 3.33644e+01 2.22624e+00 255 2017 12 2.88343e+01 1.45031e-01 99 2018 1 3.16519e+01 1.72893e+00 187 2018 2 4.05261e+01 2.23183e+00 80 2018 3 4.77643e+01 2.81983e+00 155 2018 4 5.66505e+01 2.16778e+00 129 2018 5 6.27722e+01 2.52365e-01 32 2018 6 6.34740e+01 9.31870e-02 51 2018 7 6.24608e+01 6.56779e-01 53 2018 8 5.62035e+01 7.59348e-01 34 2018 9 5.07250e+01 1.99510e+00 104 2018 10 4.21764e+01 3.46046e+00 184 2018 11 3.25793e+01 1.41422e+00 77 2018 12 2.91703e+01 4.51950e-01 48 2019 1 3.17484e+01 1.65791e+00 167 2019 2 3.89954e+01 2.70529e+00 48 2019 3 4.87938e+01 2.83076e+00 137 2019 4 5.74071e+01 1.82330e+00 103 2019 5 6.20291e+01 1.04440e+00 104 2019 6 6.35054e+01 6.57791e-02 32 2019 7 6.14220e+01 2.95850e-01 47 2019 8 5.97034e+01 1.02743e+00 29 2019 9 5.06233e+01 2.20707e+00 156 2019 10 4.29889e+01 2.76202e+00 153 2019 11 3.29906e+01 2.17266e+00 149 2019 12 2.91884e+01 5.24830e-01 88 2020 1 3.08856e+01 1.78182e+00 124 2020 2 3.94672e+01 3.39756e+00 140 2020 3 4.95745e+01 2.49775e+00 109 2020 4 5.62692e+01 2.13712e+00 78 2020 5 6.14412e+01 8.43814e-01 108 2020 6 6.36776e+01 4.25657e-02 30 2020 7 6.20667e+01 3.30763e-03 16 2020 8 5.97388e+01 8.59927e-01 48 2020 9 5.16172e+01 8.64809e-01 20 2020 10 4.02789e+01 1.78589e+00 105 2020 11 3.32300e+01 2.07895e+00 150 2020 12 2.88501e+01 3.86362e-01 214 2021 1 3.15138e+01 1.65181e+00 31 2021 2 4.08839e+01 1.78091e+00 47 2021 3 4.78866e+01 1.86050e+00 139 2021 4 5.50391e+01 8.25380e-01 80 2021 5 6.25552e+01 4.19964e-01 111 2021 6 6.34593e+01 1.43596e-01 48 2021 7 6.20502e+01 5.88659e-01 32 2021 8 5.81376e+01 8.35426e-01 51 2021 9 5.44776e+01 2.16339e-01 23 2021 10 4.09334e+01 1.91294e+00 32 2021 11 3.26561e+01 1.80612e+00 210 2021 12 2.87473e+01 5.17599e-01 88 2022 1 3.16668e+01 1.96127e+00 172 2022 2 3.89397e+01 2.63588e+00 146 2022 3 4.89947e+01 3.07101e+00 165 2022 4 5.86848e+01 1.79130e-01 38 2022 5 6.22956e+01 8.39293e-01 80 2022 6 6.32805e+01 1.01097e-01 48 2022 7 6.21731e+01 4.93483e-01 64 2022 8 5.88954e+01 2.39076e+00 48 2022 9 4.87582e+01 1.13254e+00 69 2022 10 4.23535e+01 2.53771e+00 292 2022 11 3.47155e+01 1.66993e+00 137 2022 12 2.89223e+01 4.62567e-01 212 2023 1 3.12733e+01 1.67556e+00 211 2023 2 3.85747e+01 2.52753e+00 175 2023 3 4.89513e+01 1.81223e+00 143 2023 4 5.74360e+01 1.60581e+00 80 2023 5 6.12173e+01 7.43148e-01 70 2023 6 6.34730e+01 9.83913e-02 79 2023 7 6.22230e+01 1.06089e+00 32 2023 8 5.82681e+01 1.17738e+00 75 2023 9 5.10261e+01 1.66099e+00 115 2023 10 4.08057e+01 2.45565e+00 182 2023 11 3.42835e+01 2.23026e+00 160 2023 12 2.87407e+01 3.59888e-02 32 2024 1 3.26193e+01 2.02856e+00 22 2024 2 4.05696e+01 1.99042e+00 112 2024 3 5.09269e+01 2.03997e+00 73 2024 4 nan nan 0