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 2.55993e+01 1.74532e+00 128 2002 8 2.17540e+01 1.82153e+00 112 2002 9 1.23648e+01 7.99926e+00 80 2002 10 5.91954e+00 5.71266e+00 128 2002 11 3.03673e+00 3.51725e+00 182 2002 12 2.94013e+00 2.13425e+00 175 2003 1 1.19525e+00 1.16302e+00 224 2003 2 5.01230e+00 2.70636e+00 144 2003 3 3.64758e+00 3.23766e+00 158 2003 4 5.58915e+00 3.23264e+00 122 2003 5 1.53788e+01 5.13430e+00 91 2003 6 4.65094e+00 1.24551e+00 80 2003 7 9.40528e+00 3.40767e+00 53 2003 8 8.37049e+00 4.15094e+00 118 2003 9 8.87666e+00 3.24429e+00 171 2003 10 7.68670e+00 4.65258e+00 217 2003 11 1.35654e+01 6.03197e+00 256 2003 12 5.45144e+00 3.18330e+00 254 2004 1 1.06403e+01 1.13941e+00 154 2004 2 1.04465e+01 3.11612e+00 80 2004 3 1.07258e+01 4.55986e+00 240 2004 4 1.47914e+01 4.11961e+00 169 2004 5 1.78928e+01 3.41788e+00 148 2004 6 1.16364e+01 6.44337e+00 64 2004 7 8.85448e+00 4.64627e+00 96 2004 8 1.30263e+01 4.61356e+00 96 2004 9 7.29894e+00 6.52360e+00 144 2004 10 7.91137e+00 5.50292e+00 112 2004 11 4.08966e+00 1.82422e+00 131 2004 12 2.50165e+00 1.14177e+00 142 2005 1 5.71825e+00 3.39936e+00 160 2005 2 7.40248e+00 3.54412e+00 112 2005 3 8.28030e+00 2.70871e+00 176 2005 4 2.49801e+00 3.03072e+00 112 2005 5 7.85914e+00 4.08429e+00 128 2005 6 1.03484e+01 5.43170e+00 64 2005 7 9.07754e+00 7.61357e+00 144 2005 8 1.56605e+01 4.44282e+00 58 2005 9 5.63687e+00 4.35584e+00 145 2005 10 6.77910e+00 4.21458e+00 272 2005 11 9.98555e+00 4.16131e+00 187 2005 12 9.06784e+00 2.40819e+00 112 2006 1 8.30888e+00 3.61086e+00 144 2006 2 6.18659e+00 2.77184e+00 176 2006 3 1.37697e+01 3.25546e+00 231 2006 4 2.29955e+01 4.75612e+00 192 2006 5 1.66196e+01 6.90491e+00 160 2006 6 1.42089e+01 7.71280e+00 169 2006 7 2.53496e+01 3.88878e+00 58 2006 8 2.00453e+01 5.13708e+00 79 2006 9 1.37255e+01 4.46913e+00 178 2006 10 1.29122e+01 5.20093e+00 222 2006 11 7.11280e+00 3.76499e+00 260 2006 12 9.81705e+00 3.82366e+00 160 2007 1 7.64711e+00 3.08027e+00 98 2007 2 1.06281e+01 3.60882e+00 128 2007 3 1.54041e+01 4.22483e+00 224 2007 4 1.20280e+01 6.99975e+00 142 2007 5 1.88487e+01 4.45237e+00 96 2007 6 2.23422e+01 2.08330e+00 112 2007 7 1.37628e+01 6.96346e+00 96 2007 8 2.22149e+01 4.47009e+00 123 2007 9 1.32954e+01 1.03643e+01 144 2007 10 6.36316e+00 4.87010e+00 253 2007 11 7.66031e+00 3.92155e+00 238 2007 12 1.28241e+01 4.30586e+00 128 2008 1 5.96657e+00 3.61290e+00 128 2008 2 9.04078e+00 4.01309e+00 192 2008 3 3.08812e+00 1.89859e+00 167 2008 4 1.05517e+01 4.73874e+00 160 2008 5 7.01786e+00 5.93884e+00 112 2008 6 4.07779e+00 2.98794e+00 126 2008 7 5.49934e+00 3.22287e+00 66 2008 8 9.16479e+00 2.13922e+00 97 2008 9 7.09805e+00 4.38812e+00 192 2008 10 9.31600e+00 3.99578e+00 192 2008 11 1.54368e+01 3.50373e+00 272 2008 12 1.06856e+01 4.75963e+00 112 2009 1 8.04007e+00 4.43768e+00 205 2009 2 2.53787e+00 1.49382e+00 112 2009 3 1.15584e+01 6.24545e+00 129 2009 4 5.00982e+00 1.56173e+00 128 2009 5 1.27758e+01 4.37896e+00 64 2009 6 7.01258e+00 2.49710e+00 144 2009 7 2.23760e+01 1.78031e+00 97 2009 8 1.98997e+01 3.32159e+00 112 2009 9 1.80259e+01 4.84963e+00 152 2009 10 8.16679e+00 5.71316e+00 172 2009 11 5.75187e+00 4.24867e+00 224 2009 12 2.99661e+00 2.48985e+00 80 2010 1 2.33288e+00 2.27360e+00 144 2010 2 9.69407e-01 1.85487e+00 144 2010 3 8.99296e-01 1.31157e+00 140 2010 4 2.03294e+00 1.28105e+00 192 2010 5 7.93026e+00 2.00419e+00 144 2010 6 5.26498e+00 2.90553e+00 160 2010 7 1.62283e+01 4.32780e+00 124 2010 8 1.20703e+01 1.01698e+00 32 2010 9 1.16047e+01 2.48712e+00 208 2010 10 1.29473e+01 4.22745e+00 320 2010 11 9.32570e+00 3.10600e+00 191 2010 12 3.07717e+00 2.46666e+00 224 2011 1 2.63742e+00 2.17445e+00 176 2011 2 6.59955e+00 4.14704e+00 183 2011 3 1.09068e+01 4.15036e+00 176 2011 4 1.27389e+01 2.77611e+00 144 2011 5 9.79134e+00 6.92293e+00 240 2011 6 4.67959e+00 3.05112e+00 128 2011 7 1.01730e+01 4.14181e+00 112 2011 8 6.88499e+00 4.55723e+00 178 2011 9 7.94960e+00 4.05053e+00 200 2011 10 8.02409e+00 2.77386e+00 272 2011 11 8.42746e+00 1.97168e+00 176 2011 12 9.09149e+00 3.27206e+00 121 2012 1 7.57490e+00 3.41202e+00 229 2012 2 9.87995e+00 2.64996e+00 56 2012 3 1.45975e+01 4.96648e+00 169 2012 4 2.10589e+01 4.50340e+00 208 2012 5 2.26366e+01 3.56234e+00 144 2012 6 2.15963e+01 3.40172e+00 97 2012 7 2.27327e+01 3.76288e+00 64 2012 8 1.05021e+01 2.63696e+00 76 2012 9 8.19443e+00 5.18653e+00 224 2012 10 1.10013e+01 3.99448e+00 288 2012 11 7.72636e+00 4.23672e+00 304 2012 12 1.07852e+01 3.42298e+00 85 2013 1 1.14331e+01 3.03538e+00 144 2013 2 1.15201e+01 3.82366e+00 82 2013 3 2.10398e+00 1.76425e+00 184 2013 4 7.02237e+00 1.97471e+00 96 2013 5 9.59059e+00 3.31903e+00 171 2013 6 1.23212e+01 3.40916e+00 105 2013 7 1.11834e+01 3.73224e+00 128 2013 8 5.58193e+00 3.43152e+00 80 2013 9 1.06338e+01 6.35556e+00 240 2013 10 1.17236e+01 4.14836e+00 224 2013 11 9.15096e+00 2.73801e+00 160 2013 12 1.29737e+01 3.58051e+00 112 2014 1 5.95489e+00 2.55165e+00 128 2014 2 8.57426e+00 3.77190e+00 152 2014 3 4.88652e+00 3.11429e+00 176 2014 4 5.67869e+00 2.62540e+00 112 2014 5 3.35182e+00 2.58995e+00 176 2014 6 4.77036e+00 4.52045e+00 148 2014 7 7.36479e+00 4.23360e+00 80 2014 8 1.93883e+01 2.10017e+00 112 2014 9 2.17825e+01 2.14116e+00 160 2014 10 1.29475e+01 3.74434e+00 324 2014 11 7.13008e+00 3.26016e+00 210 2014 12 8.29307e+00 3.93197e+00 172 2015 1 7.85093e+00 4.40455e+00 165 2015 2 9.21826e+00 3.01085e+00 176 2015 3 9.86268e+00 3.06069e+00 80 2015 4 1.37944e+01 4.00455e+00 64 2015 5 1.87435e+01 4.16825e+00 176 2015 6 1.55797e+01 4.03370e+00 144 2015 7 1.09685e+01 2.94730e+00 144 2015 8 1.46463e+01 3.78475e+00 150 2015 9 1.70271e+01 5.40762e+00 144 2015 10 6.27137e+00 4.39239e+00 156 2015 11 3.79765e+00 2.02921e+00 207 2015 12 5.86300e+00 4.18634e+00 96 2016 1 1.75503e+00 2.11492e+00 160 2016 2 1.01751e+00 1.76689e+00 233 2016 3 2.53417e+00 1.72834e+00 112 2016 4 2.52891e+00 3.79832e+00 160 2016 5 6.06037e+00 6.09616e+00 160 2016 6 9.50574e+00 8.33792e+00 159 2016 7 1.80796e+00 7.20257e-01 112 2016 8 1.64076e+01 2.97729e+00 159 2016 9 1.33833e+01 4.30634e+00 208 2016 10 1.35667e+01 2.95006e+00 288 2016 11 1.39602e+01 2.34426e+00 263 2016 12 9.79432e+00 3.09282e+00 180 2017 1 7.23858e+00 5.98545e+00 174 2017 2 2.15160e+00 1.82432e+00 224 2017 3 7.73085e+00 4.57111e+00 160 2017 4 8.88471e+00 4.88233e+00 176 2017 5 6.91698e+00 5.79340e+00 120 2017 6 1.06349e+01 4.13886e+00 48 2017 7 1.19426e+01 4.08491e+00 176 2017 8 8.69839e+00 4.80286e+00 112 2017 9 8.94006e+00 2.36458e+00 169 2017 10 5.57899e+00 2.34607e+00 201 2017 11 1.05664e+01 3.15676e+00 254 2017 12 8.62429e+00 3.80588e+00 128 2018 1 7.61389e+00 3.89020e+00 208 2018 2 1.73497e+01 6.75895e+00 96 2018 3 1.52093e+01 5.68642e+00 224 2018 4 1.76371e+01 5.10292e+00 212 2018 5 7.43843e+00 2.91091e+00 112 2018 6 1.03076e+01 1.52563e+00 80 2018 7 1.17470e+01 4.12623e+00 122 2018 8 1.41950e+01 1.57227e+00 112 2018 9 1.29248e+01 4.72914e+00 215 2018 10 4.55051e+00 4.09950e+00 292 2018 11 1.40753e+00 8.82500e-01 96 2018 12 1.08070e+00 7.43025e-01 80 2019 1 6.66654e-01 1.14411e+00 192 2019 2 1.05235e+00 1.06539e+00 35 2019 3 5.35831e+00 3.72796e+00 176 2019 4 6.35153e+00 3.24010e+00 126 2019 5 1.04741e+01 3.72213e+00 224 2019 6 9.42117e+00 5.22597e+00 96 2019 7 5.65809e+00 3.74223e+00 126 2019 8 1.27294e+01 2.81683e+00 68 2019 9 8.37150e+00 3.13053e+00 271 2019 10 1.14743e+01 4.13048e+00 159 2019 11 8.37694e+00 2.36374e+00 176 2019 12 8.90120e+00 1.96891e+00 128 2020 1 7.61188e+00 1.95966e+00 128 2020 2 6.24185e+00 2.66131e+00 128 2020 3 1.08402e+01 7.82108e+00 96 2020 4 3.58624e+00 2.60897e+00 143 2020 5 2.75321e+00 3.77904e+00 158 2020 6 1.43501e+01 5.49535e+00 112 2020 7 1.10019e+01 5.81308e+00 73 2020 8 1.09330e+01 2.14570e+00 64 2020 9 2.25783e+00 2.22400e+00 96 2020 10 3.98044e+00 4.18950e+00 239 2020 11 2.77823e+00 2.83086e+00 208 2020 12 6.79191e+00 3.06860e+00 224 2021 1 4.66423e+00 3.18082e+00 144 2021 2 7.21783e+00 1.60269e+00 96 2021 3 1.06344e+01 2.28537e+00 128 2021 4 1.20415e+01 6.63576e+00 192 2021 5 1.40445e+01 6.18992e+00 144 2021 6 1.42830e+01 2.70322e+00 61 2021 7 8.26003e+00 4.96209e+00 160 2021 8 8.63968e+00 4.36618e+00 134 2021 9 6.48101e+00 4.54619e+00 144 2021 10 3.15927e+00 3.90572e+00 144 2021 11 5.67260e+00 2.99181e+00 256 2021 12 6.66938e+00 5.73705e+00 98 2022 1 7.30728e+00 4.13178e+00 160 2022 2 1.24076e+01 3.96325e+00 213 2022 3 1.52872e+01 2.62026e+00 236 2022 4 2.24778e+01 3.53060e+00 68 2022 5 1.66586e+01 3.72694e+00 112 2022 6 2.59347e+01 4.08585e+00 160 2022 7 2.18449e+01 7.90260e+00 140 2022 8 6.43735e+00 3.09623e+00 190 2022 9 1.25845e+01 4.87906e+00 233 2022 10 1.20292e+01 4.66774e+00 277 2022 11 1.07528e+01 2.92673e+00 180 2022 12 1.15373e+01 2.57953e+00 136 2023 1 1.37715e+01 3.69497e+00 165 2023 2 1.16441e+01 2.69067e+00 144 2023 3 1.37277e+01 2.63071e+00 64 2023 4 1.61368e+01 3.66114e+00 80 2023 5 2.69552e+01 6.43494e+00 112 2023 6 1.49711e+01 5.55652e+00 53 2023 7 8.91684e+00 3.19890e+00 130 2023 8 9.25535e+00 3.98251e+00 169 2023 9 6.41315e+00 5.14280e+00 144 2023 10 6.20219e+00 3.82761e+00 256 2023 11 6.88361e+00 2.54479e+00 192 2023 12 6.61776e+00 1.76147e+00 128 2024 1 5.87586e+00 3.73362e+00 128 2024 2 2.41223e+00 1.73698e+00 112 2024 3 6.40026e+00 3.24385e+00 126 2024 4 2.82827e+00 1.32288e+00 32