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 2.27072e+01 1.14909e+00 79 2002 8 2.25365e+01 6.45100e+00 140 2002 9 1.68921e+01 5.66137e+00 160 2002 10 1.50107e+01 6.40290e+00 224 2002 11 1.16768e+01 4.24117e+00 215 2002 12 4.78783e+00 3.55069e+00 218 2003 1 9.47962e+00 5.82743e+00 288 2003 2 1.47048e+01 3.32597e+00 164 2003 3 1.13363e+00 1.60586e+00 48 2003 4 7.64876e+00 8.83092e+00 128 2003 5 4.72077e+00 6.28962e+00 76 2003 6 1.76364e+01 1.33234e+01 95 2003 7 8.23036e+00 5.85315e+00 32 2003 8 9.58949e+00 1.16743e+01 99 2003 9 1.21970e+01 9.47962e+00 160 2003 10 1.50228e+01 7.23364e+00 254 2003 11 9.84749e+00 5.29042e+00 304 2003 12 9.46041e+00 6.14946e+00 256 2004 1 1.26221e+01 4.34394e+00 167 2004 2 1.65254e+01 4.07796e+00 80 2004 3 1.18723e+01 8.04316e+00 203 2004 4 1.07273e+01 7.27707e+00 175 2004 5 1.57086e+01 5.08697e+00 171 2004 6 2.05118e+01 9.11266e+00 119 2004 7 1.11056e+01 7.71850e+00 69 2004 8 2.12899e+01 6.57728e+00 160 2004 9 9.14685e+00 5.09456e+00 121 2004 10 1.86518e+00 2.77348e+00 96 2004 11 1.19311e+00 2.45679e+00 186 2004 12 4.80501e-01 5.51925e-01 132 2005 1 7.71906e+00 7.10120e+00 224 2005 2 5.55693e+00 5.60470e+00 142 2005 3 5.80910e+00 3.08098e+00 192 2005 4 1.23147e+01 1.79703e+01 85 2005 5 1.91273e+01 1.39752e+01 204 2005 6 1.28698e+01 1.21662e+01 122 2005 7 1.22976e+01 9.40309e+00 52 2005 8 1.42381e+01 3.67283e+00 29 2005 9 8.62115e+00 4.56962e+00 112 2005 10 7.38290e+00 6.75087e+00 288 2005 11 1.47356e+01 4.60365e+00 320 2005 12 1.44875e+01 4.13072e+00 224 2006 1 1.18517e+01 5.14534e+00 204 2006 2 9.07419e+00 3.59903e+00 192 2006 3 6.77304e+00 3.23795e+00 256 2006 4 1.44244e+01 8.08026e+00 205 2006 5 2.57658e+01 5.55613e+00 188 2006 6 2.21530e+01 4.75517e+00 98 2006 7 2.34526e+01 5.51096e+00 114 2006 8 2.53770e+01 7.03492e+00 158 2006 9 1.66665e+01 4.60481e+00 176 2006 10 1.65772e+01 7.08294e+00 272 2006 11 1.69450e+01 5.84151e+00 256 2006 12 1.65377e+01 6.88312e+00 144 2007 1 2.22900e+01 5.64437e+00 160 2007 2 1.91612e+01 8.37319e+00 240 2007 3 2.01955e+01 5.37023e+00 288 2007 4 2.32296e+01 5.31115e+00 212 2007 5 2.73576e+01 4.52036e+00 128 2007 6 2.64361e+01 5.80040e+00 128 2007 7 1.74041e+01 8.77668e+00 143 2007 8 1.36982e+01 4.63961e+00 128 2007 9 1.92781e+01 5.89100e+00 154 2007 10 2.42905e+01 3.55524e+00 152 2007 11 2.48480e+01 2.97561e+00 304 2007 12 2.17502e+01 8.87212e+00 160 2008 1 2.70162e+01 6.65895e+00 240 2008 2 2.84419e+01 4.66043e+00 288 2008 3 1.53737e+01 8.35514e+00 208 2008 4 1.52720e+01 1.06456e+01 198 2008 5 1.44869e+01 5.40500e+00 208 2008 6 2.35502e+01 6.87411e+00 158 2008 7 2.46098e+01 5.10958e+00 82 2008 8 1.71766e+01 9.33737e+00 80 2008 9 1.38487e+01 6.15052e+00 214 2008 10 1.43037e+01 5.44654e+00 302 2008 11 1.06297e+01 5.72305e+00 272 2008 12 3.83993e+00 4.17590e+00 240 2009 1 7.49566e+00 5.59459e+00 154 2009 2 1.03047e+01 3.79940e+00 224 2009 3 2.02246e+01 5.15531e+00 249 2009 4 9.22675e+00 6.39985e+00 150 2009 5 9.71062e+00 5.38872e+00 142 2009 6 2.40363e+01 6.90057e+00 112 2009 7 2.19285e+01 5.91401e+00 96 2009 8 1.37244e+01 6.93805e+00 128 2009 9 1.69464e+01 7.06161e+00 236 2009 10 1.35815e+01 6.05534e+00 216 2009 11 1.03573e+01 4.31257e+00 208 2009 12 3.75975e+00 1.46355e+00 48 2010 1 2.14954e+00 1.90829e+00 208 2010 2 1.99273e+00 3.19809e+00 240 2010 3 6.61946e+00 6.86998e+00 231 2010 4 4.35220e+00 4.72756e+00 210 2010 5 1.47273e+01 1.21286e+01 176 2010 6 1.68493e+01 8.82922e+00 197 2010 7 1.69827e+01 7.61210e+00 80 2010 8 2.01218e+01 2.41868e+00 81 2010 9 1.60895e+01 6.36485e+00 205 2010 10 1.77785e+01 5.64283e+00 384 2010 11 2.08652e+01 4.98641e+00 317 2010 12 1.64515e+01 6.32452e+00 288 2011 1 1.80019e+01 4.28319e+00 176 2011 2 2.34307e+01 3.24955e+00 160 2011 3 2.07008e+01 3.63630e+00 208 2011 4 1.66301e+01 5.76177e+00 233 2011 5 2.06069e+01 8.08351e+00 222 2011 6 2.26040e+01 3.84189e+00 119 2011 7 2.01673e+01 7.97896e+00 99 2011 8 2.02528e+01 6.08254e+00 140 2011 9 2.07255e+01 4.54391e+00 214 2011 10 1.77956e+01 6.43975e+00 287 2011 11 2.46605e+01 5.52583e+00 288 2011 12 2.47268e+01 6.31030e+00 284 2012 1 1.84306e+01 8.28491e+00 261 2012 2 1.93112e+01 1.13438e+00 48 2012 3 2.83502e+01 6.14858e+00 256 2012 4 2.28607e+01 3.41224e+00 240 2012 5 2.40104e+01 3.75156e+00 147 2012 6 1.91295e+01 8.80287e+00 110 2012 7 1.10943e+01 8.86777e+00 130 2012 8 1.20674e+01 4.97205e+00 96 2012 9 7.81684e+00 8.13412e+00 155 2012 10 1.03107e+01 1.01394e+01 243 2012 11 9.39802e+00 4.47737e+00 280 2012 12 8.02006e+00 3.58481e+00 137 2013 1 1.52028e+01 6.20987e+00 144 2013 2 1.54813e+01 2.97136e+00 160 2013 3 4.65035e+00 5.19867e+00 240 2013 4 1.03176e+01 7.44850e+00 140 2013 5 9.63512e+00 4.82865e+00 136 2013 6 1.64331e+01 1.01572e+01 128 2013 7 1.46829e+01 1.16451e+01 32 2013 8 2.27291e+01 1.43742e+01 82 2013 9 1.22127e+01 1.32486e+01 208 2013 10 1.04634e+01 8.71546e+00 147 2013 11 8.79877e+00 6.20933e+00 174 2013 12 1.07485e+01 6.66096e+00 160 2014 1 1.08947e+01 5.19116e+00 188 2014 2 5.52402e+00 3.53546e+00 190 2014 3 5.35817e+00 4.29733e+00 208 2014 4 2.94100e+00 3.83329e+00 109 2014 5 1.40077e+01 1.51685e+01 71 2014 6 2.68841e+01 1.71747e+01 72 2014 7 1.42945e+01 5.29450e+00 132 2014 8 2.03111e+01 5.87644e+00 168 2014 9 1.52596e+01 7.16044e+00 128 2014 10 1.44576e+01 5.81827e+00 327 2014 11 1.64061e+01 3.74853e+00 224 2014 12 2.23274e+01 6.82165e+00 240 2015 1 1.45327e+01 8.32206e+00 207 2015 2 6.21217e+00 4.36533e+00 208 2015 3 4.04752e+00 2.74147e+00 80 2015 4 3.50400e+00 3.89439e+00 65 2015 5 1.31817e+01 7.70631e+00 205 2015 6 1.47342e+01 8.50632e+00 128 2015 7 1.52471e+01 7.07389e+00 75 2015 8 1.34682e+01 3.84580e+00 112 2015 9 1.36921e+01 6.00960e+00 120 2015 10 1.33754e+01 2.51673e+00 204 2015 11 1.33341e+01 6.08227e+00 177 2015 12 1.25395e+01 4.15013e+00 112 2016 1 1.04579e+01 6.59863e+00 198 2016 2 4.65877e+00 4.20924e+00 319 2016 3 7.89486e+00 5.09528e+00 224 2016 4 8.72954e+00 6.71906e+00 142 2016 5 1.01513e+01 6.95317e+00 139 2016 6 2.05355e+01 6.06668e+00 167 2016 7 1.62050e+01 6.63625e+00 202 2016 8 1.47174e+01 8.71300e+00 193 2016 9 1.43756e+01 7.29051e+00 236 2016 10 1.34065e+01 6.93357e+00 264 2016 11 1.83333e+01 5.68025e+00 204 2016 12 2.14760e+01 4.78009e+00 209 2017 1 1.73007e+01 6.52158e+00 144 2017 2 1.33862e+01 3.86168e+00 272 2017 3 1.79212e+01 3.90586e+00 239 2017 4 1.76009e+01 5.75533e+00 180 2017 5 1.70365e+01 3.19393e+00 128 2017 6 1.77756e+01 7.11525e+00 64 2017 7 1.58140e+01 8.66220e+00 110 2017 8 1.54267e+01 7.64725e+00 112 2017 9 1.32948e+01 6.41388e+00 206 2017 10 9.70326e+00 6.25055e+00 320 2017 11 1.88673e+01 4.55409e+00 280 2017 12 1.70666e+01 5.43628e+00 178 2018 1 1.35909e+01 4.70683e+00 221 2018 2 1.38340e+01 6.65956e+00 140 2018 3 1.36898e+01 6.72068e+00 237 2018 4 1.73324e+01 3.86836e+00 191 2018 5 1.29940e+01 6.40996e+00 144 2018 6 1.53012e+01 7.19249e+00 96 2018 7 2.21524e+01 9.59314e+00 107 2018 8 1.05618e+01 6.64703e+00 144 2018 9 1.64635e+01 1.31683e+01 229 2018 10 7.85564e+00 7.53619e+00 336 2018 11 3.68163e+00 3.29390e+00 94 2018 12 3.34365e+00 2.78584e+00 160 2019 1 5.28821e+00 1.10638e+01 168 2019 2 4.16189e+00 4.34157e+00 24 2019 3 5.50583e+00 6.74209e+00 249 2019 4 3.28426e+00 1.14611e+00 110 2019 5 1.25500e+01 6.65902e+00 223 2019 6 2.30381e+01 7.56133e+00 80 2019 7 1.57109e+01 8.97838e+00 93 2019 8 1.49014e+01 7.80512e+00 144 2019 9 1.69594e+01 6.48982e+00 229 2019 10 1.86795e+01 6.83964e+00 204 2019 11 1.83818e+01 3.57581e+00 182 2019 12 1.42436e+01 6.24603e+00 112 2020 1 1.67516e+01 2.39776e+00 160 2020 2 1.57677e+01 6.20069e+00 174 2020 3 1.92119e+01 4.83449e+00 176 2020 4 9.09913e+00 3.75210e+00 152 2020 5 1.78397e+01 4.57801e+00 158 2020 6 1.25924e+01 8.72884e+00 160 2020 7 1.88828e+01 6.07711e+00 96 2020 8 8.08119e+00 1.04633e+00 46 2020 9 7.53779e+00 2.61975e+00 92 2020 10 7.13868e+00 7.17622e+00 217 2020 11 9.61428e+00 5.71428e+00 272 2020 12 6.79351e+00 6.21750e+00 202 2021 1 3.53304e+00 3.52391e+00 132 2021 2 4.44901e+00 2.73020e+00 128 2021 3 3.60521e+00 2.90750e+00 160 2021 4 2.24357e+00 3.35928e+00 176 2021 5 1.04051e+01 6.45197e+00 207 2021 6 1.91543e+01 9.06221e+00 64 2021 7 7.96339e+00 9.09261e+00 63 2021 8 1.26263e+01 1.77105e+01 122 2021 9 1.16567e+01 1.28440e+01 124 2021 10 7.38155e+00 8.25555e+00 94 2021 11 1.28835e+00 1.95099e+00 240 2021 12 3.59233e+00 4.98253e+00 175 2022 1 3.18895e+00 2.59297e+00 224 2022 2 8.84323e+00 5.71745e+00 176 2022 3 9.74162e+00 5.92792e+00 181 2022 4 8.68378e+00 9.36761e+00 91 2022 5 8.50185e+00 6.70528e+00 129 2022 6 2.12071e+01 6.07208e+00 166 2022 7 1.85356e+01 1.11553e+01 115 2022 8 2.02321e+01 4.73746e+00 158 2022 9 2.06788e+01 4.76605e+00 112 2022 10 1.28053e+01 6.24051e+00 368 2022 11 1.64563e+01 6.59638e+00 140 2022 12 1.80045e+01 5.69495e+00 255 2023 1 1.84779e+01 5.54063e+00 224 2023 2 1.93935e+01 5.77328e+00 160 2023 3 1.49661e+01 4.76539e+00 176 2023 4 2.02452e+01 6.93548e+00 112 2023 5 1.97775e+01 7.76336e+00 124 2023 6 2.30909e+01 4.64015e+00 116 2023 7 2.41543e+01 4.74560e+00 76 2023 8 1.83859e+01 9.81218e+00 141 2023 9 1.14309e+01 6.84979e+00 161 2023 10 1.45193e+01 6.59368e+00 235 2023 11 8.45811e+00 6.48962e+00 226 2023 12 1.78097e+00 1.50948e+00 61 2024 1 1.40883e+00 1.18252e+00 96 2024 2 3.83678e+00 6.31040e+00 144 2024 3 7.58989e+00 6.70593e+00 175 2024 4 nan nan 0