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 1.03658e+01 6.30790e+00 64 2002 8 1.76746e+01 4.41965e+00 96 2002 9 7.32724e+00 4.51005e+00 144 2002 10 9.87833e+00 7.38781e+00 176 2002 11 4.57626e+00 4.19315e+00 237 2002 12 1.80305e+00 1.66346e+00 168 2003 1 5.39419e+00 3.99646e+00 231 2003 2 6.55539e+00 4.19540e+00 144 2003 3 7.32383e-02 1.39114e-01 61 2003 4 6.02674e+00 6.32353e+00 161 2003 5 6.89699e+00 8.91442e+00 48 2003 6 1.83576e+01 1.11140e+01 48 2003 7 1.53800e+01 1.41294e+01 32 2003 8 3.48188e+00 5.16515e+00 74 2003 9 6.80879e+00 8.03591e+00 176 2003 10 1.06746e+01 8.73480e+00 208 2003 11 6.26329e+00 5.22956e+00 304 2003 12 5.42918e+00 4.16376e+00 224 2004 1 1.02466e+01 3.23427e+00 107 2004 2 6.34271e+00 6.94125e+00 64 2004 3 6.79521e+00 4.09461e+00 192 2004 4 1.15133e+01 4.21866e+00 144 2004 5 1.61559e+01 3.86364e+00 154 2004 6 2.17426e+01 3.95714e+00 108 2004 7 1.12490e+01 8.75171e+00 64 2004 8 1.57951e+01 7.25557e+00 90 2004 9 8.28514e+00 5.40511e+00 144 2004 10 1.08492e+01 1.11538e+01 138 2004 11 1.30320e+00 3.93890e+00 192 2004 12 4.71779e-01 4.78231e-01 138 2005 1 7.18333e+00 5.46262e+00 208 2005 2 3.90653e+00 3.27698e+00 140 2005 3 2.67807e+00 2.98811e+00 192 2005 4 4.85431e-01 1.01488e+00 66 2005 5 1.35620e+01 1.08818e+01 144 2005 6 1.40420e+01 1.02870e+01 112 2005 7 5.62996e+00 3.57615e+00 96 2005 8 2.14444e+00 1.29205e+00 18 2005 9 9.93979e+00 5.96341e+00 80 2005 10 7.41614e+00 4.19265e+00 240 2005 11 9.89399e+00 4.97570e+00 240 2005 12 5.70960e+00 3.57696e+00 208 2006 1 4.14765e+00 2.98983e+00 172 2006 2 6.01749e+00 3.81431e+00 169 2006 3 6.42274e+00 4.68896e+00 287 2006 4 1.48690e+01 6.23163e+00 192 2006 5 2.12090e+01 5.20712e+00 169 2006 6 2.09767e+01 6.11897e+00 112 2006 7 1.57531e+01 3.38348e+00 127 2006 8 1.32579e+01 4.30636e+00 138 2006 9 1.12270e+01 3.65237e+00 154 2006 10 1.16653e+01 6.07323e+00 224 2006 11 1.07010e+01 3.47307e+00 208 2006 12 1.13083e+01 6.39927e+00 123 2007 1 7.60414e+00 5.77071e+00 91 2007 2 7.01622e+00 6.21746e+00 199 2007 3 1.15429e+01 5.06498e+00 289 2007 4 1.77710e+01 3.64902e+00 187 2007 5 2.13756e+01 3.45738e+00 144 2007 6 1.98058e+01 3.81816e+00 112 2007 7 1.61874e+01 2.74057e+00 123 2007 8 1.06487e+01 3.09568e+00 128 2007 9 9.51139e+00 4.60148e+00 176 2007 10 1.75092e+01 3.85855e+00 147 2007 11 1.77105e+01 4.54905e+00 285 2007 12 1.43422e+01 6.99282e+00 160 2008 1 1.46002e+01 5.23362e+00 228 2008 2 1.50383e+01 5.11289e+00 272 2008 3 2.35334e+00 3.53055e+00 220 2008 4 1.02599e+01 6.03137e+00 192 2008 5 1.24733e+01 4.53545e+00 144 2008 6 1.59383e+01 5.84087e+00 115 2008 7 2.17858e+01 3.35848e+00 32 2008 8 1.73666e+01 1.07066e+01 64 2008 9 5.39988e+00 4.36524e+00 145 2008 10 5.63127e+00 2.89162e+00 272 2008 11 4.95498e+00 4.23124e+00 265 2008 12 1.97825e+00 2.17646e+00 195 2009 1 6.54308e+00 4.78029e+00 160 2009 2 1.07344e+01 2.95369e+00 239 2009 3 1.68267e+01 2.94289e+00 176 2009 4 5.36688e+00 4.80923e+00 138 2009 5 8.94476e+00 3.63807e+00 80 2009 6 1.49099e+01 3.27857e+00 66 2009 7 1.56376e+01 2.91794e+00 96 2009 8 1.59329e+01 5.74226e+00 112 2009 9 1.09619e+01 7.02703e+00 180 2009 10 8.82672e+00 6.26148e+00 221 2009 11 4.78044e+00 3.04189e+00 192 2009 12 6.21202e-01 7.24663e-01 64 2010 1 7.28845e-01 7.12953e-01 208 2010 2 1.51708e+00 2.36249e+00 208 2010 3 3.55413e+00 2.12038e+00 189 2010 4 3.06317e+00 4.01067e+00 237 2010 5 1.11569e+01 9.78802e+00 144 2010 6 1.38651e+01 6.50961e+00 174 2010 7 1.11303e+01 3.85459e+00 80 2010 8 1.66258e+01 5.57935e+00 65 2010 9 1.37189e+01 5.58521e+00 224 2010 10 1.46144e+01 5.30782e+00 320 2010 11 1.35921e+01 3.53235e+00 288 2010 12 1.11257e+01 3.84664e+00 213 2011 1 1.46986e+01 3.21683e+00 208 2011 2 1.71224e+01 4.54141e+00 147 2011 3 1.43892e+01 4.82626e+00 216 2011 4 1.35977e+01 4.65977e+00 208 2011 5 1.60602e+01 6.34809e+00 214 2011 6 1.35306e+01 6.30086e+00 138 2011 7 2.06257e+01 3.46801e+00 80 2011 8 1.80094e+01 5.81356e+00 176 2011 9 1.43441e+01 4.56261e+00 163 2011 10 1.21053e+01 5.12601e+00 288 2011 11 1.26522e+01 4.50959e+00 208 2011 12 1.36934e+01 4.77279e+00 283 2012 1 1.23657e+01 4.38591e+00 224 2012 2 1.39758e+01 5.38442e+00 74 2012 3 1.96476e+01 7.06845e+00 208 2012 4 1.86039e+01 3.78150e+00 244 2012 5 2.19433e+01 2.66877e+00 143 2012 6 1.45114e+01 9.25555e+00 91 2012 7 5.73135e+00 5.65465e+00 110 2012 8 5.95052e+00 5.34436e+00 80 2012 9 4.85229e+00 6.92481e+00 127 2012 10 3.38173e+00 7.37516e+00 208 2012 11 6.88111e+00 4.56606e+00 231 2012 12 6.44375e+00 3.04111e+00 112 2013 1 1.18631e+01 6.78815e+00 118 2013 2 1.29687e+01 2.89028e+00 144 2013 3 3.18158e+00 3.98847e+00 223 2013 4 5.64843e+00 5.52872e+00 96 2013 5 1.05528e+01 4.51454e+00 84 2013 6 1.18392e+01 6.19644e+00 105 2013 7 1.36440e+00 1.33695e+00 32 2013 8 1.59843e+01 2.05940e+01 43 2013 9 6.29475e+00 6.21639e+00 170 2013 10 1.05253e+01 1.19999e+01 192 2013 11 3.89395e+00 4.52212e+00 112 2013 12 6.71377e+00 3.98438e+00 172 2014 1 3.33976e+00 4.00808e+00 128 2014 2 6.83662e+00 5.47700e+00 164 2014 3 1.63973e+00 1.70021e+00 180 2014 4 2.22815e+00 3.18645e+00 128 2014 5 9.06016e+00 1.14864e+01 124 2014 6 2.00103e+01 1.23061e+01 103 2014 7 1.75808e+01 3.65250e+00 99 2014 8 2.06863e+01 4.37460e+00 164 2014 9 1.50003e+01 5.77063e+00 158 2014 10 1.24897e+01 5.52369e+00 304 2014 11 1.22135e+01 3.45064e+00 208 2014 12 1.04239e+01 7.39519e+00 224 2015 1 2.23580e+00 2.17419e+00 180 2015 2 2.93888e+00 5.12226e+00 176 2015 3 4.64636e+00 2.70776e+00 112 2015 4 6.65541e+00 3.83107e+00 64 2015 5 1.09059e+01 6.53357e+00 176 2015 6 1.27163e+01 6.70849e+00 127 2015 7 1.24852e+01 4.22367e+00 70 2015 8 1.67001e+01 4.34989e+00 82 2015 9 1.41937e+01 6.20540e+00 135 2015 10 1.11933e+01 4.94335e+00 211 2015 11 6.98820e+00 6.35992e+00 179 2015 12 8.13306e+00 6.85484e+00 128 2016 1 1.23181e+00 1.18467e+00 192 2016 2 2.24486e+00 2.21484e+00 272 2016 3 7.59689e+00 3.86260e+00 240 2016 4 6.28830e+00 7.22562e+00 92 2016 5 1.26861e+01 6.27596e+00 113 2016 6 1.81493e+01 4.63121e+00 163 2016 7 1.62189e+01 1.22414e+01 195 2016 8 9.06367e+00 6.58282e+00 157 2016 9 1.09679e+01 8.61063e+00 240 2016 10 7.61404e+00 5.83905e+00 256 2016 11 1.31194e+01 5.20487e+00 188 2016 12 1.04347e+01 4.69364e+00 192 2017 1 9.33971e+00 5.41316e+00 183 2017 2 5.28663e+00 4.25240e+00 271 2017 3 8.64097e+00 4.13889e+00 249 2017 4 1.35795e+01 4.58619e+00 144 2017 5 1.21471e+01 4.28385e+00 145 2017 6 1.16612e+01 2.05557e+00 48 2017 7 1.33743e+01 6.84428e+00 96 2017 8 9.28659e+00 4.40267e+00 72 2017 9 7.72304e+00 5.86091e+00 192 2017 10 8.12456e+00 3.58613e+00 247 2017 11 1.10691e+01 3.36604e+00 320 2017 12 1.21792e+01 5.53368e+00 187 2018 1 1.01824e+01 3.63414e+00 265 2018 2 1.19774e+01 4.11272e+00 80 2018 3 1.27995e+01 5.10441e+00 224 2018 4 1.03745e+01 4.89427e+00 174 2018 5 1.22383e+01 6.83423e+00 151 2018 6 8.58346e+00 7.65088e+00 70 2018 7 2.10949e+01 7.38905e+00 96 2018 8 6.11435e+00 6.61480e+00 71 2018 9 1.14833e+01 1.08707e+01 193 2018 10 2.90022e+00 4.14491e+00 333 2018 11 2.50986e+00 2.58542e+00 112 2018 12 3.93575e-01 7.01024e-01 142 2019 1 9.32124e-02 2.49601e-01 196 2019 2 9.06025e-01 1.51240e+00 64 2019 3 3.32473e+00 4.39983e+00 242 2019 4 3.13285e+00 2.24481e+00 94 2019 5 1.10568e+01 5.43981e+00 216 2019 6 1.77633e+01 4.86269e+00 73 2019 7 1.77526e+01 5.17642e+00 105 2019 8 1.37233e+01 8.07342e+00 180 2019 9 1.07278e+01 5.59749e+00 270 2019 10 7.45546e+00 5.22941e+00 155 2019 11 9.97532e+00 3.38816e+00 160 2019 12 9.51418e+00 3.77179e+00 112 2020 1 1.14150e+01 3.83986e+00 134 2020 2 9.33715e+00 4.95587e+00 160 2020 3 8.43210e+00 4.22123e+00 160 2020 4 8.48169e+00 1.78367e+00 96 2020 5 1.38721e+01 3.77273e+00 116 2020 6 7.37619e+00 4.42998e+00 96 2020 7 1.80656e+01 3.68665e+00 37 2020 8 1.13127e+01 4.42075e+00 58 2020 9 2.11379e+00 2.82614e+00 92 2020 10 2.73593e+00 4.83589e+00 189 2020 11 1.52789e+00 2.32965e+00 240 2020 12 2.20402e+00 2.57142e+00 186 2021 1 1.19915e-01 1.64098e-01 67 2021 2 1.33047e+00 2.27045e+00 115 2021 3 1.78025e+00 1.57487e+00 144 2021 4 2.73003e+00 3.61880e+00 152 2021 5 7.02417e+00 4.96381e+00 176 2021 6 1.83869e+01 5.31087e+00 47 2021 7 1.06247e+01 8.16975e+00 64 2021 8 3.52807e+00 4.06555e+00 126 2021 9 7.15158e+00 6.91161e+00 163 2021 10 8.95070e+00 7.28269e+00 60 2021 11 7.80304e-01 1.38801e+00 247 2021 12 4.98818e+00 6.59211e+00 160 2022 1 1.92763e+00 2.99225e+00 200 2022 2 9.23897e+00 6.16148e+00 181 2022 3 6.62189e+00 5.56235e+00 192 2022 4 1.24824e+00 1.09664e+00 48 2022 5 8.77506e+00 3.33819e+00 92 2022 6 1.60985e+01 7.54867e+00 186 2022 7 1.80635e+01 8.58536e+00 120 2022 8 1.86967e+01 6.73059e+00 110 2022 9 1.53832e+01 6.33533e+00 174 2022 10 1.22555e+01 6.00707e+00 318 2022 11 1.07409e+01 3.55291e+00 112 2022 12 1.12383e+01 5.86536e+00 240 2023 1 9.73513e+00 5.51141e+00 228 2023 2 9.18894e+00 4.57247e+00 160 2023 3 1.06875e+01 3.89518e+00 176 2023 4 1.86168e+01 2.45982e+00 96 2023 5 1.52457e+01 6.82996e+00 112 2023 6 1.60491e+01 4.85943e+00 128 2023 7 2.05323e+01 4.42776e+00 81 2023 8 1.42978e+01 7.43596e+00 160 2023 9 5.06121e+00 4.00988e+00 144 2023 10 8.49955e+00 5.19543e+00 272 2023 11 7.15397e+00 5.84945e+00 227 2023 12 1.24088e+00 1.04377e+00 48 2024 1 3.00442e-01 4.77660e-01 84 2024 2 3.24996e+00 5.12158e+00 128 2024 3 5.91778e+00 8.06974e+00 129 2024 4 nan nan 0