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 2.25703e+00 3.77425e-01 69 2002 8 2.14598e+00 4.73074e-01 64 2002 9 2.60150e+00 2.78495e-01 90 2002 10 3.48910e+00 1.49381e+00 163 2002 11 3.82150e+00 5.82301e-01 199 2002 12 3.72149e+00 7.01811e-01 192 2003 1 3.16001e+00 9.37963e-01 240 2003 2 3.10633e+00 6.48000e-01 173 2003 3 6.79607e+00 2.47839e+00 80 2003 4 4.15615e+00 7.67809e-01 144 2003 5 4.97693e+00 1.69973e+00 51 2003 6 2.38332e+00 6.51447e-01 96 2003 7 1.00378e+01 1.37580e+01 60 2003 8 5.03831e+00 2.10032e+00 64 2003 9 4.94522e+00 2.23591e+00 128 2003 10 4.16575e+00 1.35541e+00 224 2003 11 3.99219e+00 9.28322e-01 271 2003 12 3.20445e+00 8.79900e-01 161 2004 1 2.76101e+00 4.96749e-01 176 2004 2 4.01484e+00 9.73778e-01 48 2004 3 2.64673e+00 4.30058e-01 192 2004 4 2.24869e+00 4.40644e-01 164 2004 5 2.22618e+00 8.56543e-01 192 2004 6 1.80388e+00 8.14357e-01 76 2004 7 2.37111e+00 6.63625e-01 96 2004 8 2.17524e+00 5.24118e-01 112 2004 9 2.91057e+00 7.64426e-01 64 2004 10 3.26865e+00 1.01016e+00 110 2004 11 3.78322e+00 1.12493e+00 201 2004 12 4.47573e+00 5.38080e-01 151 2005 1 3.73471e+00 6.65613e-01 160 2005 2 3.59496e+00 6.76609e-01 143 2005 3 2.82913e+00 7.40080e-01 221 2005 4 5.94018e+00 3.02170e+00 176 2005 5 3.89315e+00 9.81552e-01 176 2005 6 3.45463e+00 8.09240e-01 64 2005 7 3.66216e+00 8.07170e-01 104 2005 8 5.18523e+00 2.64132e+00 91 2005 9 5.84521e+00 3.66286e+00 80 2005 10 4.55376e+00 1.22047e+00 292 2005 11 3.34786e+00 1.67884e+00 261 2005 12 2.87708e+00 5.46859e-01 170 2006 1 3.20622e+00 7.35178e-01 180 2006 2 2.98748e+00 8.07118e-01 200 2006 3 3.05970e+00 6.58885e-01 250 2006 4 2.12300e+00 8.91478e-01 191 2006 5 1.72048e+00 3.81381e-01 160 2006 6 1.89186e+00 3.62409e-01 117 2006 7 1.95021e+00 4.28059e-01 96 2006 8 2.30550e+00 4.72541e-01 141 2006 9 2.41290e+00 4.33642e-01 176 2006 10 2.80492e+00 4.73233e-01 177 2006 11 2.85870e+00 6.25468e-01 247 2006 12 2.90442e+00 8.26692e-01 142 2007 1 2.83032e+00 1.02711e+00 98 2007 2 3.10926e+00 5.68060e-01 176 2007 3 2.36071e+00 4.02417e-01 298 2007 4 2.21035e+00 4.06581e-01 160 2007 5 2.34774e+00 5.65618e-01 112 2007 6 2.00651e+00 4.87390e-01 96 2007 7 2.59828e+00 4.87996e-01 145 2007 8 2.19834e+00 4.30385e-01 112 2007 9 2.76604e+00 5.70329e-01 115 2007 10 2.45014e+00 5.26400e-01 149 2007 11 3.37000e+00 6.69606e-01 284 2007 12 2.59604e+00 9.39078e-01 164 2008 1 3.36194e+00 1.24459e+00 204 2008 2 2.41849e+00 5.39384e-01 240 2008 3 3.72439e+00 6.68256e-01 176 2008 4 2.86871e+00 7.39278e-01 176 2008 5 2.03899e+00 5.04498e-01 176 2008 6 2.18574e+00 7.65253e-01 112 2008 7 1.87642e+00 5.48889e-01 80 2008 8 1.40577e+00 1.01555e-01 48 2008 9 4.78209e+00 2.07761e+00 128 2008 10 3.70519e+00 9.40558e-01 272 2008 11 3.19276e+00 7.09143e-01 281 2008 12 3.36224e+00 5.80394e-01 199 2009 1 2.87312e+00 5.76944e-01 155 2009 2 2.63184e+00 4.23876e-01 208 2009 3 2.64626e+00 8.49024e-01 192 2009 4 4.21083e+00 1.44824e+00 160 2009 5 4.66544e+00 4.68359e+00 160 2009 6 1.52821e+00 2.97303e-01 80 2009 7 2.07761e+00 4.53375e-01 56 2009 8 2.10551e+00 8.14282e-01 97 2009 9 3.36526e+00 1.38566e+00 96 2009 10 3.61526e+00 1.28412e+00 238 2009 11 3.58441e+00 8.82372e-01 196 2009 12 4.38675e+00 1.26802e+00 64 2010 1 4.73022e+00 8.02632e-01 161 2010 2 4.68473e+00 8.94539e-01 183 2010 3 3.49971e+00 7.41491e-01 167 2010 4 4.12036e+00 1.26901e+00 223 2010 5 3.92013e+00 7.31131e-01 117 2010 6 2.73363e+00 7.41913e-01 118 2010 7 2.11801e+00 3.58166e-01 73 2010 8 1.78522e+00 3.26121e-01 128 2010 9 2.82605e+00 6.92176e-01 171 2010 10 2.74401e+00 1.18316e+00 304 2010 11 2.31326e+00 7.07078e-01 289 2010 12 3.56266e+00 1.42127e+00 212 2011 1 4.18284e+00 2.07082e+00 214 2011 2 2.55981e+00 4.62549e-01 176 2011 3 2.30543e+00 7.39696e-01 174 2011 4 2.37321e+00 5.66310e-01 144 2011 5 2.05234e+00 6.85497e-01 210 2011 6 2.45050e+00 6.07777e-01 185 2011 7 2.23517e+00 6.40392e-01 127 2011 8 1.99478e+00 3.82434e-01 144 2011 9 2.06606e+00 4.85778e-01 144 2011 10 2.83290e+00 1.01326e+00 288 2011 11 2.80888e+00 8.62778e-01 233 2011 12 3.18051e+00 6.68262e-01 240 2012 1 3.00418e+00 8.00272e-01 196 2012 2 3.37163e+00 5.07822e-01 38 2012 3 2.53982e+00 9.97147e-01 233 2012 4 1.90281e+00 4.49959e-01 208 2012 5 1.65965e+00 3.79181e-01 176 2012 6 2.82303e+00 1.17667e+00 112 2012 7 2.66513e+00 5.37218e-01 64 2012 8 2.88124e+00 1.09861e+00 80 2012 9 3.79089e+00 1.74424e+00 95 2012 10 6.10766e+00 2.03055e+00 217 2012 11 2.56730e+00 5.47159e-01 288 2012 12 3.74939e+00 2.37523e+00 80 2013 1 2.37483e+00 1.01717e+00 149 2013 2 3.16972e+00 8.65929e-01 128 2013 3 3.50256e+00 7.32786e-01 231 2013 4 3.19896e+00 5.18372e-01 48 2013 5 2.55582e+00 5.50361e-01 160 2013 6 2.75475e+00 6.79451e-01 80 2013 7 4.07035e+00 1.41585e+00 60 2013 8 4.36670e+00 2.04332e+00 119 2013 9 4.02444e+00 1.18834e+00 167 2013 10 6.31259e+00 4.17286e+00 240 2013 11 4.52596e+00 5.64412e-01 78 2013 12 3.58265e+00 1.77063e+00 192 2014 1 3.52893e+00 6.24751e-01 128 2014 2 3.15758e+00 9.03110e-01 144 2014 3 4.33497e+00 7.76155e-01 160 2014 4 4.29925e+00 1.24605e+00 128 2014 5 6.79260e+00 3.34433e+00 144 2014 6 3.37212e+00 1.14376e+00 145 2014 7 2.42506e+00 4.89533e-01 96 2014 8 1.75461e+00 6.63151e-01 121 2014 9 1.96923e+00 6.28062e-01 122 2014 10 3.06289e+00 1.82432e+00 285 2014 11 3.46525e+00 9.10129e-01 240 2014 12 3.37483e+00 5.70104e-01 176 2015 1 4.82391e+00 1.17433e+00 202 2015 2 3.94958e+00 9.46528e-01 256 2015 3 4.43816e+00 4.25096e-01 128 2015 4 2.39485e+00 2.30481e-01 48 2015 5 2.99412e+00 1.09201e+00 152 2015 6 3.04874e+00 9.20899e-01 99 2015 7 1.70329e+00 3.99825e-01 75 2015 8 2.35556e+00 4.91674e-01 127 2015 9 2.73250e+00 3.12411e-01 80 2015 10 2.65742e+00 9.12622e-01 192 2015 11 3.44133e+00 1.26030e+00 228 2015 12 4.71204e+00 1.43057e+00 176 2016 1 4.73052e+00 8.55909e-01 139 2016 2 3.96240e+00 1.07399e+00 256 2016 3 2.84303e+00 6.69297e-01 192 2016 4 4.97431e+00 3.79502e+00 95 2016 5 2.69605e+00 5.37409e-01 131 2016 6 2.26161e+00 4.70890e-01 151 2016 7 1.94866e+00 3.99113e-01 171 2016 8 2.72486e+00 4.56821e-01 124 2016 9 4.04769e+00 1.28283e+00 145 2016 10 3.88280e+00 1.71273e+00 304 2016 11 2.57743e+00 7.05136e-01 256 2016 12 2.87818e+00 6.65843e-01 218 2017 1 3.05296e+00 9.76715e-01 184 2017 2 3.01048e+00 6.35912e-01 318 2017 3 3.30692e+00 1.14094e+00 201 2017 4 2.68011e+00 1.08303e+00 144 2017 5 1.97950e+00 2.26362e-01 129 2017 6 2.55199e+00 4.52765e-01 71 2017 7 3.96307e+00 3.03067e+00 112 2017 8 2.64009e+00 4.18355e-01 86 2017 9 2.77747e+00 5.02998e-01 176 2017 10 3.35526e+00 9.45708e-01 199 2017 11 2.86584e+00 7.56754e-01 304 2017 12 3.69739e+00 1.48107e+00 144 2018 1 3.62869e+00 9.25070e-01 165 2018 2 2.29402e+00 5.12340e-01 144 2018 3 2.59676e+00 8.07718e-01 232 2018 4 2.56003e+00 1.08795e+00 160 2018 5 2.23982e+00 5.69421e-01 130 2018 6 2.40318e+00 6.77523e-01 123 2018 7 2.63575e+00 1.20193e+00 124 2018 8 2.43405e+00 1.51292e+00 43 2018 9 3.69960e+00 1.75231e+00 157 2018 10 4.26456e+00 1.49169e+00 240 2018 11 4.01784e+00 9.03282e-01 112 2018 12 3.92247e+00 5.36704e-01 123 2019 1 4.65399e+00 1.10776e+00 208 2019 2 5.12801e+00 7.71614e-01 48 2019 3 4.28357e+00 8.73305e-01 240 2019 4 3.62821e+00 6.95937e-01 128 2019 5 2.92567e+00 5.93804e-01 222 2019 6 1.74076e+00 4.13935e-01 144 2019 7 2.21255e+00 7.87819e-01 113 2019 8 2.64329e+00 9.18867e-01 125 2019 9 3.35803e+00 1.04378e+00 274 2019 10 2.69592e+00 5.89738e-01 134 2019 11 2.77847e+00 6.30810e-01 203 2019 12 3.66259e+00 1.24876e+00 108 2020 1 2.67055e+00 5.20316e-01 160 2020 2 3.81321e+00 7.18026e-01 131 2020 3 3.82644e+00 1.36420e+00 135 2020 4 3.36091e+00 8.13523e-01 153 2020 5 3.05898e+00 6.73390e-01 160 2020 6 2.93042e+00 1.00051e+00 77 2020 7 1.96549e+00 4.88495e-01 96 2020 8 1.52929e+00 1.47296e-01 48 2020 9 3.49370e+00 2.05990e+00 112 2020 10 5.26196e+00 1.16725e+00 192 2020 11 4.90876e+00 1.31568e+00 320 2020 12 4.51737e+00 1.05095e+00 304 2021 1 3.75381e+00 5.85984e-01 144 2021 2 3.97997e+00 7.75299e-01 113 2021 3 5.64432e+00 1.19230e+00 152 2021 4 4.12305e+00 9.43575e-01 160 2021 5 3.89142e+00 7.55702e-01 192 2021 6 1.54982e+00 2.70803e-01 64 2021 7 2.74085e+00 1.08937e+00 87 2021 8 2.98382e+00 8.01512e-01 127 2021 9 5.29566e+00 2.52879e+00 96 2021 10 7.83448e+00 5.12465e+00 146 2021 11 4.59206e+00 1.51445e+00 256 2021 12 3.47541e+00 5.85323e-01 144 2022 1 3.92409e+00 7.53428e-01 208 2022 2 2.96365e+00 8.26414e-01 170 2022 3 2.38516e+00 5.45596e-01 208 2022 4 3.68792e+00 6.68478e-01 64 2022 5 3.46095e+00 1.62307e+00 112 2022 6 2.27570e+00 6.27554e-01 176 2022 7 2.40009e+00 2.69516e-01 72 2022 8 2.70374e+00 6.96893e-01 96 2022 9 3.81552e+00 1.13818e+00 161 2022 10 2.94608e+00 7.29034e-01 312 2022 11 2.58178e+00 7.12823e-01 160 2022 12 3.14165e+00 7.92572e-01 188 2023 1 2.46342e+00 4.99321e-01 235 2023 2 2.52614e+00 6.73470e-01 172 2023 3 2.39933e+00 6.28142e-01 128 2023 4 2.20380e+00 5.05255e-01 112 2023 5 2.38380e+00 6.14020e-01 85 2023 6 1.84064e+00 4.75193e-01 128 2023 7 1.79791e+00 4.96415e-01 72 2023 8 2.25333e+00 6.80305e-01 144 2023 9 3.07614e+00 8.39243e-01 176 2023 10 3.44545e+00 1.24061e+00 208 2023 11 3.03275e+00 8.37765e-01 162 2023 12 4.58246e+00 1.15456e+00 98 2024 1 4.09750e+00 6.47775e-01 111 2024 2 2.99076e+00 6.19419e-01 128 2024 3 3.81898e+00 1.63160e-01 80 2024 4 nan nan 0