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 1.90501e+01 5.90238e+00 63 2002 8 2.04318e+01 6.46323e+00 48 2002 9 3.09244e+00 3.58172e+00 112 2002 10 7.06465e+00 6.97769e+00 144 2002 11 3.44821e+00 3.61150e+00 160 2002 12 3.92103e+00 5.25721e+00 205 2003 1 7.84800e+00 6.37164e+00 208 2003 2 1.22719e+01 7.06559e+00 161 2003 3 6.83849e+00 6.32613e+00 126 2003 4 9.59170e+00 5.81011e+00 194 2003 5 1.54195e+01 5.22965e+00 80 2003 6 2.09278e+01 4.94241e+00 81 2003 7 6.81427e+00 6.09732e+00 64 2003 8 1.43576e+01 1.14797e+01 97 2003 9 8.42375e+00 8.16423e+00 144 2003 10 9.28172e+00 7.45841e+00 224 2003 11 6.15737e+00 5.38387e+00 239 2003 12 6.86297e+00 7.15059e+00 192 2004 1 1.98501e+01 3.68586e+00 177 2004 2 4.20865e+00 1.70782e+00 64 2004 3 1.49803e+01 4.56797e+00 192 2004 4 1.98362e+01 4.86905e+00 148 2004 5 2.51296e+01 5.36848e+00 182 2004 6 3.04521e+01 2.74411e+00 32 2004 7 2.45635e+01 3.44818e+00 68 2004 8 2.45076e+01 3.41730e+00 112 2004 9 7.68685e+00 1.26861e+01 64 2004 10 1.36251e+01 1.33571e+01 121 2004 11 6.82712e+00 7.43106e+00 156 2004 12 2.65268e+00 3.53706e+00 144 2005 1 6.30338e+00 3.94628e+00 176 2005 2 9.18341e+00 7.40307e+00 152 2005 3 7.66349e+00 5.56757e+00 190 2005 4 5.35571e+00 6.37838e+00 132 2005 5 1.32868e+01 4.41341e+00 137 2005 6 9.30017e+00 6.34035e+00 80 2005 7 6.78220e+00 5.12008e+00 128 2005 8 1.45368e+01 1.13778e+01 48 2005 9 5.68474e+00 3.85973e+00 64 2005 10 6.88584e+00 3.86756e+00 244 2005 11 7.79863e+00 7.75951e+00 249 2005 12 1.36507e+00 1.39684e+00 128 2006 1 1.26305e+00 1.22327e+00 160 2006 2 4.97766e+00 5.47577e+00 154 2006 3 1.43852e+01 6.21600e+00 284 2006 4 1.88577e+01 6.97930e+00 187 2006 5 2.28727e+01 9.74103e+00 174 2006 6 1.87792e+01 1.20488e+01 160 2006 7 2.53209e+01 7.75937e+00 64 2006 8 2.06954e+01 4.75153e+00 112 2006 9 1.79133e+01 7.70343e+00 143 2006 10 1.26407e+01 1.02539e+01 268 2006 11 7.62402e+00 8.18668e+00 255 2006 12 1.11094e+01 9.64781e+00 128 2007 1 1.00545e+01 9.11705e+00 80 2007 2 8.48272e+00 5.79501e+00 176 2007 3 1.27062e+01 7.63648e+00 318 2007 4 1.40629e+01 8.66751e+00 192 2007 5 1.50310e+01 8.33946e+00 128 2007 6 1.99105e+01 5.57635e+00 125 2007 7 2.42056e+01 1.99825e+00 72 2007 8 1.32627e+01 8.85012e+00 66 2007 9 3.93644e+00 3.25237e+00 112 2007 10 2.19426e+00 2.83400e+00 192 2007 11 9.26766e+00 6.96237e+00 278 2007 12 9.46582e+00 6.08775e+00 102 2008 1 5.14627e+00 5.64374e+00 192 2008 2 9.49885e+00 6.91309e+00 272 2008 3 6.01518e+00 5.64633e+00 170 2008 4 1.60760e+01 6.39810e+00 144 2008 5 1.66025e+01 7.13155e+00 159 2008 6 2.05289e+01 5.42697e+00 161 2008 7 2.67863e+01 7.29526e+00 96 2008 8 2.65277e+01 3.88608e+00 48 2008 9 4.43607e+00 5.45705e+00 120 2008 10 3.59445e+00 3.46197e+00 288 2008 11 5.66267e+00 5.46876e+00 272 2008 12 9.95811e-01 9.70226e-01 167 2009 1 8.00498e+00 6.62808e+00 202 2009 2 1.55576e+01 5.80318e+00 208 2009 3 1.07659e+01 3.89524e+00 208 2009 4 4.32250e+00 4.25686e+00 138 2009 5 8.29068e+00 8.18278e+00 128 2009 6 2.25740e+01 4.64821e+00 112 2009 7 2.98289e+01 2.77968e+00 48 2009 8 1.22293e+01 6.86037e+00 112 2009 9 7.36919e+00 6.37792e+00 107 2009 10 6.41182e+00 6.29750e+00 207 2009 11 5.45208e+00 4.64893e+00 128 2009 12 1.99602e+00 1.98964e+00 64 2010 1 4.54196e+00 3.58387e+00 192 2010 2 5.40077e+00 3.99750e+00 203 2010 3 8.80298e+00 4.88754e+00 208 2010 4 7.84323e+00 3.88140e+00 192 2010 5 1.30929e+01 7.74835e+00 117 2010 6 2.08019e+01 5.45056e+00 103 2010 7 1.35544e+01 7.16149e+00 65 2010 8 2.89139e+01 6.90351e+00 75 2010 9 1.43912e+01 8.07559e+00 212 2010 10 1.92038e+01 6.61520e+00 336 2010 11 1.31073e+01 6.72866e+00 297 2010 12 8.60588e+00 6.27640e+00 228 2011 1 8.22218e+00 5.18496e+00 240 2011 2 1.21461e+01 4.48604e+00 206 2011 3 1.58176e+01 6.13965e+00 192 2011 4 1.97046e+01 6.05816e+00 192 2011 5 2.28732e+01 9.92207e+00 217 2011 6 2.43833e+01 4.58232e+00 176 2011 7 2.97141e+01 4.71409e+00 128 2011 8 2.57208e+01 5.04968e+00 201 2011 9 1.40842e+01 8.37545e+00 128 2011 10 1.27684e+01 6.69823e+00 282 2011 11 1.02459e+01 6.38103e+00 240 2011 12 7.85344e+00 4.96971e+00 224 2012 1 1.32348e+01 6.80974e+00 216 2012 2 1.40829e+01 5.83797e+00 64 2012 3 1.37139e+01 8.36576e+00 224 2012 4 2.19785e+01 6.37031e+00 240 2012 5 2.06320e+01 8.42278e+00 130 2012 6 1.57335e+01 8.72208e+00 116 2012 7 1.37330e+01 9.66754e+00 84 2012 8 1.76952e+01 1.12235e+01 122 2012 9 3.47648e+00 4.27794e+00 109 2012 10 3.38317e+00 3.67780e+00 228 2012 11 1.31810e+01 6.01059e+00 272 2012 12 5.46806e+00 3.55180e+00 64 2013 1 1.55377e+01 1.20435e+01 149 2013 2 6.73615e+00 6.33263e+00 104 2013 3 9.61845e+00 7.92781e+00 192 2013 4 8.61207e+00 4.69236e+00 96 2013 5 1.97919e+01 8.44493e+00 173 2013 6 1.47259e+01 9.94698e+00 96 2013 7 4.54132e-01 1.51447e-01 16 2013 8 9.45531e+00 1.01457e+01 116 2013 9 9.89477e+00 1.14378e+01 182 2013 10 6.82504e+00 5.55618e+00 239 2013 11 1.78539e+00 1.69014e+00 133 2013 12 7.16493e+00 4.67481e+00 128 2014 1 9.47338e+00 4.44360e+00 144 2014 2 1.31848e+01 4.08472e+00 160 2014 3 5.80462e+00 2.82737e+00 172 2014 4 1.28247e+01 8.77607e+00 159 2014 5 7.60834e+00 5.37407e+00 201 2014 6 1.20672e+01 9.18610e+00 135 2014 7 2.55350e+01 3.26672e+00 80 2014 8 2.84825e+01 6.90620e+00 166 2014 9 1.38054e+01 5.84701e+00 176 2014 10 1.67832e+01 7.21799e+00 300 2014 11 1.24713e+01 8.26684e+00 265 2014 12 1.25788e+01 7.65927e+00 208 2015 1 3.32520e+00 2.24198e+00 208 2015 2 1.00303e+01 6.95575e+00 208 2015 3 1.14479e+01 4.61655e+00 165 2015 4 1.71039e+01 5.04850e+00 96 2015 5 1.24674e+01 8.91620e+00 208 2015 6 1.46102e+01 9.29242e+00 80 2015 7 2.46033e+01 3.82920e+00 78 2015 8 2.46164e+01 7.54666e+00 114 2015 9 8.83561e+00 6.97363e+00 80 2015 10 9.65203e+00 7.95621e+00 218 2015 11 3.80658e+00 5.45228e+00 189 2015 12 3.02385e+00 2.77685e+00 144 2016 1 7.59037e-01 6.49124e-01 111 2016 2 4.84047e+00 4.98797e+00 272 2016 3 6.74075e+00 5.24631e+00 175 2016 4 9.37923e+00 7.26901e+00 128 2016 5 1.89420e+01 7.73236e+00 158 2016 6 2.82839e+01 3.65104e+00 144 2016 7 2.14204e+01 9.14040e+00 173 2016 8 1.46359e+01 6.70816e+00 79 2016 9 1.30143e+01 1.09277e+01 132 2016 10 1.14255e+01 7.72031e+00 272 2016 11 1.23497e+01 7.46842e+00 256 2016 12 1.05159e+01 6.11067e+00 224 2017 1 6.23117e+00 6.20783e+00 192 2017 2 9.01097e+00 5.38521e+00 256 2017 3 1.18538e+01 8.00741e+00 186 2017 4 1.64491e+01 8.21978e+00 144 2017 5 1.68011e+01 9.38236e+00 112 2017 6 2.13231e+01 3.10074e+00 64 2017 7 1.87590e+01 8.02849e+00 128 2017 8 1.40054e+01 9.52808e+00 112 2017 9 1.98569e+01 6.95273e+00 179 2017 10 5.19157e+00 5.86334e+00 228 2017 11 1.69350e+01 5.56432e+00 272 2017 12 7.66744e+00 7.07650e+00 160 2018 1 1.11321e+01 6.01149e+00 240 2018 2 1.45312e+01 7.95419e+00 139 2018 3 1.83755e+01 9.73866e+00 240 2018 4 1.91816e+01 6.86648e+00 208 2018 5 1.73514e+01 7.59331e+00 181 2018 6 1.90815e+01 7.65596e+00 101 2018 7 1.64419e+01 7.25949e+00 74 2018 8 1.18227e+01 9.22090e+00 80 2018 9 8.98551e+00 6.28915e+00 128 2018 10 2.65578e+00 2.44869e+00 272 2018 11 3.97149e+00 3.01698e+00 112 2018 12 1.28880e+00 1.51154e+00 112 2019 1 3.86519e+00 5.05663e+00 169 2019 2 3.86353e+00 1.06072e+00 32 2019 3 6.05846e+00 3.03819e+00 176 2019 4 5.41335e+00 4.44550e+00 96 2019 5 1.62710e+01 8.14502e+00 188 2019 6 2.65790e+01 5.88671e+00 96 2019 7 1.89194e+01 7.41750e+00 159 2019 8 1.94755e+01 3.93665e+00 103 2019 9 1.36706e+01 8.27454e+00 256 2019 10 1.03699e+01 1.01450e+01 132 2019 11 1.08402e+01 6.97073e+00 208 2019 12 2.25448e+00 3.17891e+00 96 2020 1 5.93037e+00 5.40401e+00 144 2020 2 3.45073e+00 4.99248e+00 160 2020 3 8.56579e+00 6.98573e+00 176 2020 4 1.25505e+01 5.50498e+00 192 2020 5 1.05552e+01 6.13917e+00 128 2020 6 1.62081e+01 1.10328e+01 109 2020 7 1.72503e+01 6.61150e+00 32 2020 8 2.72276e+01 6.37895e+00 74 2020 9 9.19116e+00 8.64004e+00 80 2020 10 4.38571e+00 5.02943e+00 192 2020 11 1.78207e+00 1.52580e+00 318 2020 12 3.15609e+00 3.22066e+00 269 2021 1 2.59537e+00 2.27208e+00 128 2021 2 9.01300e+00 5.76813e+00 128 2021 3 6.42256e+00 3.77309e+00 132 2021 4 1.01144e+01 5.36180e+00 160 2021 5 6.98095e+00 4.83992e+00 144 2021 6 2.58013e+01 4.39734e+00 39 2021 7 1.97070e+01 4.74158e+00 80 2021 8 1.35756e+01 1.02801e+01 124 2021 9 5.58111e+00 8.20998e+00 112 2021 10 2.29926e+00 3.26242e+00 192 2021 11 4.60908e+00 2.74232e+00 224 2021 12 7.50154e+00 5.42319e+00 135 2022 1 3.10951e+00 3.02040e+00 192 2022 2 1.03347e+01 6.12648e+00 144 2022 3 1.56576e+01 8.81509e+00 239 2022 4 7.97214e+00 4.89886e+00 53 2022 5 1.46137e+01 6.92459e+00 128 2022 6 2.09585e+01 5.38965e+00 146 2022 7 2.47711e+01 4.07458e+00 121 2022 8 1.97197e+01 4.78676e+00 109 2022 9 1.24740e+01 8.03685e+00 160 2022 10 1.70284e+01 5.92037e+00 288 2022 11 1.16732e+01 6.74094e+00 149 2022 12 8.97365e+00 8.10553e+00 161 2023 1 1.43951e+01 8.86230e+00 238 2023 2 1.12875e+01 5.87389e+00 160 2023 3 1.96170e+01 9.03067e+00 166 2023 4 1.52738e+01 9.48201e+00 96 2023 5 1.86090e+01 8.10051e+00 112 2023 6 2.62627e+01 5.88367e+00 108 2023 7 2.35355e+01 7.28413e+00 128 2023 8 1.97226e+01 5.43389e+00 132 2023 9 1.64323e+01 9.06920e+00 192 2023 10 8.67035e+00 5.91290e+00 224 2023 11 6.17137e+00 6.59367e+00 173 2023 12 3.34400e+00 3.97651e+00 96 2024 1 2.02657e+00 1.15875e+00 106 2024 2 1.20352e+01 7.04358e+00 160 2024 3 7.42347e+00 4.43424e+00 112 2024 4 nan nan 0