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 2.65499e+00 5.02426e-01 80 2002 8 2.85684e+00 7.75199e-01 128 2002 9 3.29874e+00 1.11110e+00 158 2002 10 3.69617e+00 1.07502e+00 222 2002 11 2.59600e+00 1.16213e+00 235 2002 12 3.88455e+00 1.45932e+00 164 2003 1 6.33661e+00 3.78563e+00 272 2003 2 2.60300e+00 8.05189e-01 160 2003 3 3.11665e+01 2.19364e+01 59 2003 4 6.32346e+00 4.87493e+00 104 2003 5 1.42436e+01 4.68076e+00 26 2003 6 3.72672e+00 2.86762e+00 87 2003 7 7.27341e+00 4.48541e+00 48 2003 8 4.83193e+00 2.31091e+00 108 2003 9 3.69401e+00 3.00348e+00 168 2003 10 4.67858e+00 2.52998e+00 223 2003 11 2.73872e+00 8.42449e-01 254 2003 12 3.50717e+00 1.16655e+00 224 2004 1 4.31885e+00 1.86887e+00 208 2004 2 3.19141e+00 1.45210e+00 48 2004 3 6.07580e+00 3.04756e+00 247 2004 4 4.47513e+00 3.23571e+00 164 2004 5 3.96975e+00 1.95948e+00 208 2004 6 3.45291e+00 1.17734e+00 114 2004 7 8.82361e+00 3.68855e+00 74 2004 8 3.86442e+00 1.95890e+00 138 2004 9 4.16973e+00 1.96711e+00 112 2004 10 9.85918e+00 2.56961e+00 64 2004 11 8.59653e+00 4.74695e+00 101 2004 12 9.78866e+00 3.16601e+00 144 2005 1 7.79564e+00 4.55719e+00 192 2005 2 1.15481e+01 4.94691e+00 128 2005 3 6.65791e+00 2.92081e+00 160 2005 4 9.77057e+00 9.80256e+00 75 2005 5 5.76729e+00 9.24986e+00 117 2005 6 3.62319e+00 2.05586e+00 96 2005 7 1.07994e+01 1.29222e+01 128 2005 8 7.45804e-01 5.49837e-02 16 2005 9 7.86371e+00 4.23365e+00 98 2005 10 5.03445e+00 2.29953e+00 240 2005 11 3.33516e+00 7.85724e-01 272 2005 12 2.55371e+00 8.89510e-01 256 2006 1 3.04527e+00 7.27160e-01 217 2006 2 4.46656e+00 1.83832e+00 192 2006 3 2.61617e+01 2.58407e+01 258 2006 4 1.59050e+01 1.18123e+01 143 2006 5 2.98654e+00 1.64410e+00 204 2006 6 3.02170e+00 1.43639e+00 96 2006 7 5.26916e+00 4.05205e+00 144 2006 8 4.11118e+00 3.11026e+00 108 2006 9 4.41613e+00 1.32143e+00 185 2006 10 3.12177e+00 9.13839e-01 208 2006 11 2.02379e+00 5.44494e-01 265 2006 12 2.38622e+00 8.87670e-01 141 2007 1 1.78455e+00 6.33754e-01 144 2007 2 1.58578e+00 7.83184e-01 212 2007 3 1.82762e+00 5.99979e-01 302 2007 4 2.41467e+00 1.20486e+00 192 2007 5 1.72527e+00 3.27636e-01 100 2007 6 2.32491e+00 5.48350e-01 155 2007 7 4.31070e+00 1.14123e+00 117 2007 8 4.19043e+00 1.40844e+00 129 2007 9 4.55502e+00 1.40858e+00 165 2007 10 2.24211e+00 5.66475e-01 208 2007 11 1.29129e+00 1.90397e-01 301 2007 12 1.38087e+00 2.69261e-01 234 2008 1 1.06829e+00 2.84302e-01 232 2008 2 1.26135e+00 5.36523e-01 271 2008 3 3.75574e+00 3.18118e+00 240 2008 4 1.41945e+01 1.49917e+01 183 2008 5 1.00121e+01 5.46185e+00 157 2008 6 1.07964e+01 1.12396e+01 116 2008 7 6.58408e+00 8.17828e+00 124 2008 8 3.94492e+00 1.01065e+00 96 2008 9 9.18145e+00 9.65925e+00 221 2008 10 6.62437e+00 4.33893e+00 272 2008 11 3.79588e+00 2.00545e+00 256 2008 12 9.39009e+00 1.64451e+01 224 2009 1 4.78230e+00 1.65718e+00 176 2009 2 3.86137e+00 8.55842e-01 256 2009 3 2.15254e+00 4.41002e-01 256 2009 4 8.42996e+00 1.01723e+01 139 2009 5 1.06668e+01 1.09790e+01 77 2009 6 4.35332e+00 2.72347e+00 140 2009 7 4.68957e+00 4.07210e+00 96 2009 8 7.50488e+00 5.80487e+00 144 2009 9 4.48886e+00 2.82891e+00 221 2009 10 3.65589e+00 9.60341e-01 199 2009 11 3.24704e+00 2.59240e+00 174 2009 12 2.65458e+00 3.50784e-01 64 2010 1 8.07007e+00 3.15260e+00 237 2010 2 8.11990e+00 3.36775e+00 190 2010 3 1.05201e+01 7.28570e+00 240 2010 4 2.80828e+01 2.41870e+01 130 2010 5 1.10624e+01 1.05977e+01 170 2010 6 5.64781e+00 1.89579e+00 144 2010 7 4.87858e+00 2.03947e+00 112 2010 8 5.91076e+00 6.01836e+00 105 2010 9 5.13432e+00 2.69583e+00 199 2010 10 3.84971e+00 3.06343e+00 376 2010 11 2.11736e+00 6.58626e-01 305 2010 12 1.69525e+00 4.15394e-01 272 2011 1 1.79987e+00 3.18384e-01 203 2011 2 2.39178e+00 6.24007e-01 192 2011 3 2.57307e+00 7.98430e-01 224 2011 4 2.63348e+00 1.25932e+00 272 2011 5 2.61227e+00 9.35805e-01 192 2011 6 2.62315e+00 2.27049e-01 80 2011 7 4.31730e+00 2.20415e+00 112 2011 8 3.19462e+00 1.19459e+00 180 2011 9 2.88775e+00 1.61352e+00 194 2011 10 1.79807e+00 4.34538e-01 256 2011 11 1.02216e+00 1.42663e-01 272 2011 12 9.67145e-01 1.40952e-01 256 2012 1 1.17101e+00 2.42650e-01 312 2012 2 9.53337e-01 1.03245e-01 96 2012 3 1.21897e+00 2.45095e-01 203 2012 4 2.14338e+00 3.72276e-01 250 2012 5 2.80869e+00 7.48401e-01 121 2012 6 5.07945e+00 4.86166e+00 104 2012 7 1.15993e+01 9.38964e+00 128 2012 8 6.31511e+00 4.40205e+00 61 2012 9 4.73844e+00 3.47686e+00 115 2012 10 5.80100e+00 5.99722e+00 228 2012 11 7.11537e+00 3.44527e+00 256 2012 12 5.26196e+00 1.92132e+00 192 2013 1 3.67288e+00 2.36517e+00 176 2013 2 2.43900e+00 4.91395e-01 160 2013 3 8.51259e+00 1.32680e+01 196 2013 4 6.74575e+00 3.64466e+00 93 2013 5 7.18178e+00 3.53370e+00 132 2013 6 5.90286e+00 3.50816e+00 107 2013 7 5.10304e+00 1.17109e+00 32 2013 8 6.51074e+00 7.08563e+00 53 2013 9 2.34994e+00 2.04569e+00 153 2013 10 8.56224e+00 1.41023e+01 246 2013 11 5.75725e+00 4.25149e+00 132 2013 12 2.73936e+00 2.77022e+00 180 2014 1 2.17741e+00 1.81613e-01 112 2014 2 1.12387e+01 8.16693e+00 159 2014 3 1.93222e+01 2.04958e+01 181 2014 4 1.47381e+01 1.27650e+01 112 2014 5 1.10886e+01 1.52182e+01 53 2014 6 3.92125e+00 3.41782e+00 85 2014 7 8.54683e+00 6.91035e+00 142 2014 8 3.71415e+00 9.47969e-01 99 2014 9 3.03945e+00 2.06338e+00 155 2014 10 4.81520e+00 2.64436e+00 347 2014 11 2.29664e+00 9.21095e-01 257 2014 12 1.70455e+00 6.64150e-01 224 2015 1 3.42493e+00 6.32820e+00 208 2015 2 4.79418e+00 4.26870e+00 176 2015 3 1.07419e+01 6.58833e+00 112 2015 4 2.50524e+01 2.17909e+01 48 2015 5 8.47493e+00 5.42820e+00 234 2015 6 3.76042e+00 1.52731e+00 115 2015 7 8.93664e+00 5.53917e+00 83 2015 8 5.85654e+00 1.85683e+00 112 2015 9 5.80973e+00 2.30452e+00 64 2015 10 4.49394e+00 1.33241e+00 224 2015 11 6.06638e+00 4.87463e+00 206 2015 12 2.39432e+00 7.89314e-01 128 2016 1 1.91771e+00 8.61833e-01 176 2016 2 4.77892e+00 2.25590e+00 288 2016 3 8.76273e+00 3.12364e+00 176 2016 4 1.05691e+01 8.73102e+00 128 2016 5 1.53970e+01 1.57760e+01 193 2016 6 6.04808e+00 2.09469e+00 128 2016 7 5.85500e+00 3.47465e+00 222 2016 8 6.14265e+00 3.78498e+00 192 2016 9 6.14134e+00 2.88321e+00 208 2016 10 3.05708e+00 1.25509e+00 256 2016 11 2.01370e+00 7.51746e-01 213 2016 12 1.38687e+00 2.80129e-01 215 2017 1 1.46096e+00 3.86331e-01 192 2017 2 3.15131e+00 1.69148e+00 267 2017 3 3.14745e+00 1.77659e+00 320 2017 4 4.05143e+00 9.06052e-01 203 2017 5 4.93552e+00 2.04729e+00 128 2017 6 3.68552e+00 1.22730e+00 112 2017 7 1.18270e+01 1.36914e+01 64 2017 8 5.70790e+00 3.24562e+00 144 2017 9 6.26488e+00 3.72549e+00 187 2017 10 8.93104e+00 4.18800e+00 217 2017 11 4.42522e+00 4.24426e+00 282 2017 12 2.39018e+00 1.35129e+00 192 2018 1 1.93245e+00 3.85389e-01 224 2018 2 2.34855e+00 1.11455e+00 126 2018 3 2.66058e+00 8.40223e-01 202 2018 4 5.52371e+00 2.94329e+00 144 2018 5 4.25608e+00 1.37476e+00 124 2018 6 6.07678e+00 1.79606e+00 64 2018 7 3.77140e+00 2.62474e+00 80 2018 8 4.28249e+00 2.86369e+00 114 2018 9 3.39683e+00 4.27331e+00 252 2018 10 3.73174e+00 2.10180e+00 272 2018 11 4.69118e+00 2.05450e+00 96 2018 12 6.39317e+00 2.95421e+00 185 2019 1 9.96747e+00 1.23753e+01 167 2019 2 1.24980e+01 1.98972e+01 99 2019 3 1.20645e+01 1.35216e+01 151 2019 4 2.26443e+01 2.19571e+01 95 2019 5 1.02441e+01 1.19323e+01 215 2019 6 3.67682e+00 1.42179e+00 68 2019 7 4.25709e+00 8.69526e-01 103 2019 8 5.93088e+00 2.68958e+00 144 2019 9 4.04286e+00 1.79275e+00 216 2019 10 3.86378e+00 1.14954e+00 198 2019 11 2.57674e+00 1.29471e+00 184 2019 12 2.41455e+00 6.09715e-01 160 2020 1 2.44497e+00 9.35683e-01 146 2020 2 1.96358e+00 3.47161e-01 152 2020 3 7.15975e+00 7.88040e+00 192 2020 4 5.24138e+00 1.38561e+00 192 2020 5 4.88628e+00 2.79535e+00 176 2020 6 7.30221e+00 3.60731e+00 140 2020 7 6.15862e+00 6.39460e+00 109 2020 8 2.95685e+01 3.83874e+01 41 2020 9 6.45590e+00 5.62296e+00 132 2020 10 8.04367e+00 9.26629e+00 258 2020 11 6.13140e+00 4.24759e+00 253 2020 12 3.91577e+00 2.19431e+00 166 2021 1 6.50216e+00 3.72971e+00 144 2021 2 1.01944e+01 6.13974e+00 108 2021 3 2.46622e+01 1.48360e+01 169 2021 4 3.96413e+01 2.19320e+01 145 2021 5 1.57806e+01 1.69869e+01 165 2021 6 4.48315e+00 2.45046e+00 63 2021 7 1.99499e+01 1.99534e+01 93 2021 8 7.93241e+00 4.74185e+00 112 2021 9 4.00752e+00 2.85782e+00 141 2021 10 8.26247e+00 8.01043e+00 176 2021 11 1.89142e+01 1.58136e+01 208 2021 12 1.56228e+01 1.26170e+01 129 2022 1 8.46165e+00 5.80453e+00 240 2022 2 8.29647e+00 5.51509e+00 204 2022 3 1.73909e+01 2.24607e+01 196 2022 4 9.56913e+00 1.12522e+01 63 2022 5 8.96688e+00 7.46660e+00 160 2022 6 5.34878e+00 2.10029e+00 144 2022 7 8.15230e+00 1.16530e+01 81 2022 8 3.68599e+00 1.90539e+00 112 2022 9 2.52466e+00 1.67426e+00 112 2022 10 5.25001e+00 1.96461e+00 334 2022 11 3.28573e+00 1.25047e+00 125 2022 12 2.08960e+00 3.74443e-01 241 2023 1 2.36150e+00 7.76406e-01 224 2023 2 2.25237e+00 3.36945e-01 170 2023 3 4.11986e+00 2.21819e+00 184 2023 4 3.87644e+00 1.67559e+00 112 2023 5 3.86617e+00 5.62309e-01 112 2023 6 2.98418e+00 1.43204e+00 80 2023 7 3.64385e+00 9.13538e-01 96 2023 8 3.04767e+00 2.17803e+00 173 2023 9 5.01190e+00 4.63387e+00 149 2023 10 4.36818e+00 2.09726e+00 202 2023 11 4.27016e+00 3.64253e+00 191 2023 12 4.13519e+00 2.10934e+00 80 2024 1 7.85807e+00 4.58441e+00 128 2024 2 2.09024e+01 2.34778e+01 139 2024 3 1.41916e+01 6.70378e+00 48 2024 4 nan nan 0