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 2.23526e+00 9.51936e-01 3 2002 8 2.29592e+00 4.47881e-01 51 2002 9 1.69943e+00 1.13888e+00 72 2002 10 6.43735e-01 6.63468e-01 96 2002 11 1.08920e+00 8.95869e-01 155 2002 12 1.83069e+00 5.67836e-01 170 2003 1 1.84572e+00 9.48130e-01 211 2003 2 2.71431e+00 3.76916e-01 104 2003 3 9.13045e-02 1.05231e+00 40 2003 4 1.58713e+00 1.00569e+00 99 2003 5 2.82063e+00 1.40471e-01 12 2003 6 2.38201e+00 1.90870e-01 40 2003 7 8.42114e-01 2.93862e-01 18 2003 8 1.83439e+00 3.10807e-02 6 2003 9 8.40851e-01 7.31709e-01 62 2003 10 1.77371e+00 7.52541e-01 149 2003 11 1.32102e+00 6.47231e-01 190 2003 12 1.93089e+00 6.70925e-01 158 2004 1 2.70273e+00 7.74281e-01 138 2004 2 1.04334e+00 1.06819e+00 48 2004 3 1.66828e+00 7.52278e-01 144 2004 4 2.93102e+00 2.69573e-01 87 2004 5 3.11733e+00 2.62740e-01 75 2004 6 3.15276e+00 2.11754e-01 32 2004 7 2.39911e+00 2.20511e-01 14 2004 8 1.81876e+00 1.10440e+00 49 2004 9 1.71507e+00 6.72971e-01 71 2004 10 1.38651e+00 5.79149e-01 96 2004 11 1.15508e+00 9.71366e-01 115 2004 12 8.57519e-01 8.05231e-01 74 2005 1 1.91093e+00 9.85733e-01 101 2005 2 2.32830e+00 3.74592e-01 112 2005 3 1.31400e+00 8.74393e-01 136 2005 4 -2.80649e-01 4.75793e-01 76 2005 5 2.04299e+00 9.05162e-01 48 2005 6 2.61364e+00 4.25438e-01 32 2005 7 1.21828e+00 4.84247e-01 59 2005 8 1.88583e+00 8.12624e-01 25 2005 9 3.55820e+00 1.93630e-01 15 2005 10 2.73550e+00 4.76856e-01 196 2005 11 2.90430e+00 4.54680e-01 172 2005 12 2.07869e+00 5.78870e-01 131 2006 1 2.05732e+00 4.63451e-01 97 2006 2 1.66714e+00 8.34285e-01 125 2006 3 2.53404e+00 6.84554e-01 200 2006 4 2.79452e+00 5.05326e-01 105 2006 5 2.68331e+00 4.19486e-01 93 2006 6 2.97099e+00 2.41052e-01 37 2006 7 2.44347e+00 4.60258e-01 32 2006 8 2.86594e+00 5.06008e-01 64 2006 9 1.70555e+00 9.06940e-01 79 2006 10 2.45970e+00 4.17144e-01 187 2006 11 2.72550e+00 3.70450e-01 195 2006 12 2.06861e+00 6.46287e-01 85 2007 1 8.54428e-01 3.62136e-01 32 2007 2 1.24416e+00 1.37796e+00 172 2007 3 2.66614e+00 5.36159e-01 181 2007 4 2.79591e+00 5.44882e-01 161 2007 5 3.09021e+00 5.28461e-01 50 2007 6 2.97522e+00 3.82638e-01 47 2007 7 3.30022e+00 2.31568e-01 67 2007 8 2.94410e+00 3.71660e-01 52 2007 9 2.28472e+00 2.38283e-01 64 2007 10 2.27439e+00 3.57543e-01 92 2007 11 2.56957e+00 3.13340e-01 196 2007 12 2.53596e+00 4.26946e-01 121 2008 1 2.10532e+00 4.79998e-01 173 2008 2 2.12920e+00 8.30971e-01 178 2008 3 1.10837e+00 6.54593e-01 155 2008 4 2.38974e+00 6.00259e-01 96 2008 5 2.90346e+00 4.03132e-01 117 2008 6 3.55145e+00 1.66120e+00 62 2008 7 3.06882e+00 3.37502e-01 32 2008 8 2.39360e+00 6.85337e-01 12 2008 9 1.21027e+00 7.21814e-01 96 2008 10 2.00074e+00 4.61901e-01 222 2008 11 2.25718e+00 4.90892e-01 214 2008 12 1.84020e+00 6.89649e-01 194 2009 1 2.13703e+00 4.03860e-01 122 2009 2 2.50125e+00 4.55836e-01 209 2009 3 2.91537e+00 3.91556e-01 130 2009 4 9.51306e-01 3.69765e-01 30 2009 5 2.25300e+00 5.07679e-01 65 2009 6 3.09272e+00 1.81310e-01 32 2009 7 3.52716e+00 1.47334e-01 20 2009 8 2.85988e+00 4.38377e-01 48 2009 9 2.07006e+00 7.52850e-01 47 2009 10 1.50593e+00 1.11871e+00 138 2009 11 2.09627e+00 5.08433e-01 143 2009 12 -5.34409e-01 6.19774e-01 17 2010 1 4.24910e-01 9.16285e-01 101 2010 2 3.68341e-01 8.02238e-01 76 2010 3 1.97578e+00 5.21779e-01 142 2010 4 2.19030e+00 4.16460e-01 121 2010 5 2.04978e+00 3.83862e-01 32 2010 6 2.72446e+00 2.56475e-01 67 2010 7 2.41565e+00 2.59466e-01 24 2010 8 3.29978e+00 2.71645e-01 9 2010 9 2.08090e+00 8.09561e-01 153 2010 10 2.06227e+00 4.52593e-01 233 2010 11 2.48404e+00 4.98594e-01 236 2010 12 2.67417e+00 5.52655e-01 216 2011 1 2.59417e+00 3.67171e-01 167 2011 2 1.87343e+00 9.01184e-01 122 2011 3 2.61334e+00 3.20326e-01 112 2011 4 2.59406e+00 3.61830e-01 104 2011 5 3.38109e+00 1.78241e-01 83 2011 6 3.02803e+00 9.83478e-02 39 2011 7 3.24241e+00 1.14771e-01 42 2011 8 3.09887e+00 1.76562e-01 78 2011 9 3.16109e+00 6.35715e-01 105 2011 10 2.19947e+00 5.48356e-01 225 2011 11 2.26342e+00 4.76712e-01 164 2011 12 2.80076e+00 3.99665e-01 182 2012 1 2.89343e+00 4.51843e-01 134 2012 2 2.89295e+00 3.55836e-01 40 2012 3 2.70256e+00 5.22802e-01 173 2012 4 3.15538e+00 2.50420e-01 120 2012 5 2.88912e+00 4.01954e-01 70 2012 6 3.24271e+00 6.65943e-02 16 2012 7 1.64706e+00 6.88973e-01 48 2012 8 -9.48542e-02 1.57935e+00 25 2012 9 5.23617e-01 5.60661e-01 62 2012 10 1.47953e+00 7.62559e-01 179 2012 11 3.01426e+00 3.09824e-01 156 2012 12 3.20215e+00 3.31688e-01 96 2013 1 2.97172e+00 6.43636e-01 127 2013 2 2.39243e+00 8.03166e-01 101 2013 3 2.76405e-01 1.08014e+00 80 2013 4 1.78417e+00 1.03925e+00 51 2013 5 2.67613e+00 4.29439e-01 65 2013 6 2.62955e+00 2.06737e-01 29 2013 7 nan nan 0 2013 8 6.41627e-01 6.36634e-01 32 2013 9 1.13438e+00 8.85399e-01 131 2013 10 1.41325e+00 1.22538e+00 139 2013 11 2.45114e+00 6.73066e-01 123 2013 12 1.77884e+00 7.60607e-01 136 2014 1 7.69705e-01 8.14841e-01 87 2014 2 1.48141e+00 1.23660e+00 155 2014 3 9.15365e-01 8.50275e-01 53 2014 4 3.75643e-01 5.27447e-01 52 2014 5 6.94261e-01 7.18994e-01 48 2014 6 3.03387e+00 5.67909e-01 47 2014 7 3.09478e+00 1.86077e-01 59 2014 8 3.08753e+00 1.42177e-01 50 2014 9 2.93383e+00 3.78637e-01 125 2014 10 2.07076e+00 7.78539e-01 264 2014 11 2.18285e+00 4.87557e-01 182 2014 12 2.01569e+00 9.86333e-01 137 2015 1 6.50020e-01 1.01985e+00 104 2015 2 -2.79169e-01 1.08692e+00 98 2015 3 2.20450e+00 1.96449e+00 92 2015 4 2.63126e+00 4.38727e-01 62 2015 5 2.74871e+00 3.00295e-01 94 2015 6 2.66050e+00 1.51996e-01 57 2015 7 2.99622e+00 2.61672e-01 44 2015 8 1.71318e+00 6.54028e-01 27 2015 9 1.71850e+00 6.29716e-01 17 2015 10 2.21658e+00 6.48780e-01 194 2015 11 1.80705e+00 1.89892e+00 89 2015 12 1.50629e+00 6.20373e-01 92 2016 1 2.74889e-01 8.41334e-01 80 2016 2 1.36103e+00 7.16000e-01 201 2016 3 2.30102e+00 3.77442e-01 158 2016 4 2.29337e-02 4.41472e-01 16 2016 5 2.93523e+00 3.20295e-01 56 2016 6 3.23284e+00 1.94575e-01 95 2016 7 2.87494e+00 4.23984e-01 153 2016 8 1.70054e+00 1.54449e+00 107 2016 9 1.23982e+00 5.78874e-01 102 2016 10 2.15515e+00 5.35014e-01 275 2016 11 2.45584e+00 4.94604e-01 174 2016 12 2.64769e+00 8.82428e-01 155 2017 1 2.27296e+00 7.72392e-01 151 2017 2 1.97679e+00 6.37176e-01 131 2017 3 2.29745e+00 7.66630e-01 189 2017 4 2.69962e+00 4.42811e-01 99 2017 5 2.86848e+00 6.87418e-01 81 2017 6 2.64574e+00 3.51206e-01 20 2017 7 1.05418e+00 9.75697e-01 44 2017 8 2.12012e+00 1.43145e+00 46 2017 9 1.32842e+00 1.09781e+00 84 2017 10 2.08365e+00 7.03102e-01 188 2017 11 2.70252e+00 5.47104e-01 255 2017 12 3.13653e+00 5.69493e-01 99 2018 1 3.00303e+00 5.66170e-01 187 2018 2 2.87564e+00 2.60836e-01 80 2018 3 2.54321e+00 6.89655e-01 155 2018 4 2.80911e+00 3.20959e-01 129 2018 5 2.16664e+00 2.98813e-01 32 2018 6 2.40773e+00 5.73097e-01 51 2018 7 2.76994e+00 6.41213e-01 53 2018 8 1.91633e+00 5.23759e-01 34 2018 9 1.92143e+00 1.07006e+00 104 2018 10 1.32604e+00 1.18756e+00 184 2018 11 7.60099e-01 7.51385e-01 77 2018 12 1.98553e-01 7.08433e-01 48 2019 1 2.13215e-01 8.06499e-01 167 2019 2 1.07102e+00 5.67688e-01 48 2019 3 1.11591e+00 7.84690e-01 137 2019 4 1.61787e+00 5.87708e-01 103 2019 5 2.98392e+00 5.16666e-01 104 2019 6 2.84974e+00 3.51912e-01 32 2019 7 2.88408e+00 7.22154e-01 47 2019 8 3.11623e+00 1.17624e+00 29 2019 9 2.51389e+00 7.26742e-01 156 2019 10 2.40179e+00 3.62062e-01 153 2019 11 2.55380e+00 6.04101e-01 149 2019 12 2.30719e+00 8.64811e-01 88 2020 1 2.37394e+00 7.92264e-01 124 2020 2 1.80149e+00 8.90227e-01 140 2020 3 1.25009e+00 6.34741e-01 109 2020 4 2.35123e+00 3.14051e-01 78 2020 5 2.51438e+00 4.37610e-01 108 2020 6 3.90290e-01 6.56521e-01 30 2020 7 3.97619e+00 8.54012e-02 16 2020 8 3.02692e+00 2.75529e-01 48 2020 9 1.73687e+00 1.73175e+00 20 2020 10 1.30020e+00 7.56009e-01 105 2020 11 1.72161e+00 9.66196e-01 150 2020 12 2.49846e+00 6.10350e-01 214 2021 1 8.42871e-01 7.62609e-01 31 2021 2 4.78207e-01 5.05051e-01 47 2021 3 1.35318e+00 6.96258e-01 139 2021 4 2.58349e+00 4.98282e-01 80 2021 5 2.65041e+00 5.74519e-01 111 2021 6 2.86383e+00 6.85946e-01 48 2021 7 1.02973e+00 9.89808e-01 32 2021 8 2.58665e-01 7.88471e-01 51 2021 9 8.53312e-01 6.93326e-01 23 2021 10 1.03200e+00 7.06505e-01 32 2021 11 2.02373e+00 4.39009e-01 210 2021 12 2.28658e+00 6.06822e-01 88 2022 1 1.91565e+00 7.54812e-01 172 2022 2 2.16017e+00 4.98884e-01 146 2022 3 9.08593e-01 1.49723e+00 165 2022 4 2.51444e+00 4.78613e-01 38 2022 5 2.42016e+00 4.65455e-01 80 2022 6 2.02237e+00 4.04021e-01 48 2022 7 2.88747e+00 6.82831e-01 64 2022 8 2.65167e+00 1.03732e+00 48 2022 9 1.67799e+00 7.37281e-01 69 2022 10 2.43127e+00 4.20091e-01 292 2022 11 2.81260e+00 4.70075e-01 137 2022 12 3.10850e+00 7.36335e-01 212 2023 1 2.74245e+00 7.11345e-01 211 2023 2 1.31212e+00 8.33503e-01 175 2023 3 1.61117e+00 9.96191e-01 143 2023 4 2.80127e+00 6.29308e-01 80 2023 5 3.04899e+00 4.09758e-01 70 2023 6 2.88481e+00 4.10615e-01 79 2023 7 2.68758e+00 8.63835e-01 32 2023 8 2.82432e+00 4.65641e-01 75 2023 9 1.36495e+00 1.29239e+00 115 2023 10 1.84158e+00 7.21721e-01 182 2023 11 2.35121e+00 8.16389e-01 160 2023 12 2.38052e-01 7.37155e-01 32 2024 1 -6.17641e-01 8.41886e-01 22 2024 2 1.07787e+00 5.32441e-01 112 2024 3 1.57607e+00 4.24740e-01 73 2024 4 nan nan 0