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 2.03782e+01 4.05215e+00 88 2002 8 1.42279e+01 5.00027e+00 63 2002 9 5.60619e+00 4.94915e+00 128 2002 10 7.57140e+00 4.65902e+00 162 2002 11 6.64248e+00 4.22014e+00 199 2002 12 4.43778e+00 3.51727e+00 177 2003 1 4.81893e+00 3.71674e+00 240 2003 2 6.96084e+00 4.53423e+00 160 2003 3 3.83558e+00 3.37885e+00 48 2003 4 6.72600e+00 4.74418e+00 185 2003 5 3.84471e+00 1.29340e+00 32 2003 6 1.01471e+01 6.92525e+00 64 2003 7 4.85236e+00 6.26011e+00 48 2003 8 1.25006e+01 8.14537e+00 48 2003 9 5.02536e+00 4.48010e+00 126 2003 10 6.29814e+00 4.45850e+00 208 2003 11 4.02823e+00 3.83802e+00 240 2003 12 2.79044e+00 2.36518e+00 200 2004 1 1.27464e+01 2.51170e+00 158 2004 2 7.51465e+00 1.12614e+00 64 2004 3 1.59006e+01 6.19621e+00 208 2004 4 1.22109e+01 7.78250e+00 143 2004 5 2.31799e+01 5.42578e+00 202 2004 6 3.15700e+01 4.07320e+00 87 2004 7 1.60731e+01 2.45257e+00 80 2004 8 2.04304e+01 1.98719e+00 112 2004 9 8.82343e+00 8.61947e+00 89 2004 10 8.88384e+00 6.09774e+00 130 2004 11 5.82296e+00 3.74210e+00 128 2004 12 3.61033e+00 2.21164e+00 160 2005 1 6.38529e+00 3.36801e+00 118 2005 2 1.41649e+01 4.44701e+00 128 2005 3 6.57680e+00 4.51481e+00 192 2005 4 2.35813e+00 1.97387e+00 112 2005 5 1.19067e+01 4.03553e+00 176 2005 6 1.05576e+01 6.90451e+00 101 2005 7 4.35042e+00 4.21184e+00 96 2005 8 3.04079e+00 2.44420e+00 32 2005 9 1.50744e-01 2.07641e-01 112 2005 10 2.81778e+00 2.05882e+00 256 2005 11 7.37077e+00 3.71325e+00 263 2005 12 5.24750e+00 3.91319e+00 163 2006 1 4.98609e+00 3.63451e+00 202 2006 2 4.94066e+00 3.95536e+00 192 2006 3 1.17208e+01 4.25620e+00 279 2006 4 1.86209e+01 4.47351e+00 208 2006 5 2.19231e+01 4.47738e+00 144 2006 6 2.70003e+01 4.88347e+00 128 2006 7 2.17745e+01 4.22760e+00 128 2006 8 2.38990e+01 4.51232e+00 160 2006 9 1.57985e+01 5.85381e+00 135 2006 10 1.18914e+01 5.98720e+00 241 2006 11 7.12531e+00 3.82519e+00 240 2006 12 9.78242e+00 6.28845e+00 112 2007 1 1.80576e+01 5.57246e+00 114 2007 2 1.15329e+01 3.63938e+00 192 2007 3 1.99921e+01 5.34168e+00 304 2007 4 1.93703e+01 5.09237e+00 217 2007 5 1.93414e+01 2.32323e+00 127 2007 6 1.91599e+01 2.88551e+00 112 2007 7 1.67082e+01 3.61503e+00 132 2007 8 1.38174e+01 5.79213e+00 128 2007 9 1.34179e+01 6.60928e+00 97 2007 10 1.71211e+01 2.76396e+00 127 2007 11 1.47225e+01 4.23302e+00 288 2007 12 1.34435e+01 6.39304e+00 179 2008 1 4.98420e+00 4.17761e+00 201 2008 2 9.54171e+00 3.96177e+00 256 2008 3 5.74758e+00 4.75290e+00 224 2008 4 1.61722e+01 5.72705e+00 176 2008 5 1.90541e+01 3.21235e+00 176 2008 6 2.00785e+01 5.46318e+00 176 2008 7 2.46383e+01 2.02742e+00 48 2008 8 2.08892e+01 4.31372e+00 38 2008 9 5.82986e+00 3.87758e+00 128 2008 10 9.34700e+00 4.16809e+00 287 2008 11 8.70429e+00 3.20972e+00 288 2008 12 3.91500e+00 3.16506e+00 250 2009 1 5.73319e+00 5.04209e+00 151 2009 2 1.28176e+01 4.74333e+00 208 2009 3 1.84556e+01 7.49974e+00 216 2009 4 6.39446e+00 4.14991e+00 158 2009 5 1.01492e+01 5.69025e+00 105 2009 6 1.83183e+01 5.52516e+00 96 2009 7 2.29154e+01 4.72483e+00 64 2009 8 2.15581e+01 7.98640e+00 96 2009 9 1.10067e+01 5.23900e+00 80 2009 10 1.05216e+01 4.31307e+00 215 2009 11 7.74631e+00 3.22904e+00 238 2009 12 2.24386e+00 2.12269e+00 64 2010 1 1.82075e+00 1.17917e+00 182 2010 2 3.30779e+00 2.84926e+00 229 2010 3 2.76495e+00 1.90408e+00 240 2010 4 6.52793e+00 3.70708e+00 206 2010 5 7.06591e+00 5.10247e+00 126 2010 6 1.76775e+01 3.28188e+00 176 2010 7 1.99645e+01 3.20238e+00 57 2010 8 2.33777e+01 1.50466e+00 96 2010 9 1.46028e+01 5.44533e+00 202 2010 10 1.98994e+01 5.53558e+00 343 2010 11 1.52579e+01 4.20193e+00 304 2010 12 8.14561e+00 4.30552e+00 224 2011 1 5.35373e+00 2.39913e+00 176 2011 2 1.17544e+01 4.11107e+00 160 2011 3 1.62982e+01 3.47030e+00 222 2011 4 2.19373e+01 6.00639e+00 176 2011 5 2.01059e+01 4.77973e+00 240 2011 6 9.36136e+00 7.87055e+00 144 2011 7 1.75212e+01 5.08550e+00 88 2011 8 2.29605e+01 4.99759e+00 149 2011 9 1.66619e+01 6.27976e+00 159 2011 10 1.03719e+01 4.45008e+00 301 2011 11 1.28221e+01 4.13462e+00 267 2011 12 4.42401e+00 2.36237e+00 252 2012 1 5.68309e+00 3.98446e+00 240 2012 2 3.62644e+00 3.33141e+00 64 2012 3 1.97032e+01 1.06728e+01 192 2012 4 1.88675e+01 6.31909e+00 224 2012 5 1.74396e+01 3.08533e+00 144 2012 6 8.84898e+00 5.60892e+00 112 2012 7 1.72530e+01 4.90159e+00 127 2012 8 1.49779e+01 4.47690e+00 96 2012 9 6.56582e+00 1.61554e+00 63 2012 10 4.60678e+00 4.42665e+00 229 2012 11 5.62332e+00 2.25862e+00 272 2012 12 7.65339e+00 6.35999e+00 160 2013 1 3.36177e+00 5.90655e+00 144 2013 2 1.48799e+00 1.31612e+00 144 2013 3 3.76410e+00 3.08824e+00 214 2013 4 1.02999e+01 6.59595e+00 111 2013 5 1.63511e+01 7.09101e+00 120 2013 6 1.83723e+01 3.46626e+00 69 2013 7 1.08990e+01 3.41067e+00 20 2013 8 1.50921e+01 4.44153e+00 48 2013 9 8.33648e+00 4.55215e+00 150 2013 10 7.17436e+00 4.25625e+00 176 2013 11 8.44261e+00 3.11005e+00 112 2013 12 8.70178e+00 2.66672e+00 208 2014 1 7.91539e+00 3.53038e+00 127 2014 2 1.23225e+01 3.44490e+00 160 2014 3 1.30073e+01 5.68745e+00 190 2014 4 5.21636e+00 3.98002e+00 128 2014 5 4.98134e+00 6.13942e+00 128 2014 6 1.34300e+01 3.58066e+00 149 2014 7 1.67731e+01 2.68873e+00 94 2014 8 2.51583e+01 2.11592e+00 208 2014 9 2.11912e+01 5.61494e+00 127 2014 10 1.03706e+01 3.70783e+00 279 2014 11 1.03263e+01 2.46975e+00 231 2014 12 8.23798e+00 3.73844e+00 224 2015 1 3.44495e+00 2.61070e+00 208 2015 2 5.42819e+00 3.30917e+00 209 2015 3 1.06175e+01 3.10478e+00 112 2015 4 1.16216e+01 5.62881e+00 64 2015 5 1.64045e+01 5.04799e+00 190 2015 6 1.43808e+01 6.39730e+00 140 2015 7 2.23055e+01 2.44859e+00 83 2015 8 1.35719e+01 4.52747e+00 115 2015 9 1.11082e+01 5.22366e+00 111 2015 10 1.34930e+01 5.68445e+00 224 2015 11 1.41022e+01 5.82061e+00 226 2015 12 1.43949e+01 4.58984e+00 94 2016 1 2.64477e+00 2.50972e+00 156 2016 2 2.70534e+00 2.21531e+00 272 2016 3 9.30042e+00 3.10499e+00 176 2016 4 6.25916e+00 3.35703e+00 128 2016 5 1.52960e+01 7.84194e+00 144 2016 6 1.92728e+01 6.13830e+00 175 2016 7 2.51998e+01 4.61051e+00 168 2016 8 2.37663e+01 3.77775e+00 144 2016 9 1.77887e+01 6.13831e+00 224 2016 10 1.46760e+01 3.64918e+00 273 2016 11 1.45410e+01 2.24555e+00 160 2016 12 1.02124e+01 3.69298e+00 224 2017 1 7.14826e+00 5.54046e+00 169 2017 2 6.12523e+00 3.29884e+00 272 2017 3 5.97624e+00 3.79797e+00 212 2017 4 1.36807e+01 4.48815e+00 144 2017 5 1.24150e+01 8.58940e+00 129 2017 6 1.27903e+01 4.54215e+00 74 2017 7 1.35177e+01 6.18964e+00 96 2017 8 1.35762e+01 5.75269e+00 112 2017 9 1.16041e+01 5.75153e+00 182 2017 10 7.89364e+00 3.36516e+00 209 2017 11 1.04410e+01 2.80797e+00 288 2017 12 1.30030e+01 4.59433e+00 119 2018 1 6.99928e+00 5.11414e+00 224 2018 2 1.84109e+01 4.55337e+00 104 2018 3 1.33275e+01 4.78808e+00 224 2018 4 1.88850e+01 4.59304e+00 144 2018 5 1.79412e+01 6.57472e+00 153 2018 6 1.53846e+01 6.60235e+00 142 2018 7 1.85984e+01 4.72774e+00 112 2018 8 9.87761e+00 5.40266e+00 45 2018 9 1.07796e+01 4.71794e+00 200 2018 10 3.09480e+00 2.62407e+00 251 2018 11 3.31557e+00 1.46042e+00 112 2018 12 1.68591e+00 2.50201e+00 126 2019 1 1.34135e+00 2.69590e+00 224 2019 2 3.15775e+00 8.33589e-01 48 2019 3 5.90433e+00 5.16041e+00 249 2019 4 6.41119e+00 4.87108e+00 126 2019 5 1.35427e+01 4.67717e+00 208 2019 6 1.89767e+01 2.52828e+00 64 2019 7 2.17908e+01 5.24451e+00 112 2019 8 1.93078e+01 5.82670e+00 176 2019 9 1.56594e+01 3.01846e+00 263 2019 10 1.28628e+01 6.42034e+00 208 2019 11 1.28427e+01 3.61857e+00 160 2019 12 6.12597e+00 3.36448e+00 128 2020 1 7.08955e+00 3.43543e+00 192 2020 2 5.05397e+00 4.30846e+00 147 2020 3 1.19111e+01 5.70689e+00 112 2020 4 1.15921e+01 4.94032e+00 118 2020 5 1.60937e+01 3.26117e+00 144 2020 6 1.36896e+01 5.70830e+00 107 2020 7 2.41276e+01 6.51190e+00 22 2020 8 2.77854e+01 3.07994e+00 51 2020 9 6.11222e+00 7.30245e+00 96 2020 10 2.03855e+00 2.23860e+00 191 2020 11 1.24324e+01 5.94582e+00 288 2020 12 2.22584e+00 1.69847e+00 224 2021 1 4.11903e+00 1.77534e+00 112 2021 2 5.21042e+00 2.99573e+00 103 2021 3 2.91457e+00 3.25263e+00 140 2021 4 9.57669e+00 7.48845e+00 170 2021 5 1.20978e+01 4.78038e+00 173 2021 6 2.02089e+01 1.17710e+00 63 2021 7 2.13170e+01 3.97794e+00 59 2021 8 3.16493e+00 5.34396e+00 128 2021 9 4.57358e+00 4.02913e+00 96 2021 10 1.60111e+00 2.51286e+00 96 2021 11 3.50056e+00 2.24241e+00 224 2021 12 7.12383e+00 4.78299e+00 159 2022 1 2.48166e+00 2.93554e+00 208 2022 2 9.72168e+00 5.71231e+00 176 2022 3 1.22005e+01 7.93165e+00 254 2022 4 1.34444e+01 5.25134e+00 80 2022 5 1.34218e+01 4.57211e+00 111 2022 6 1.99382e+01 4.76432e+00 128 2022 7 1.81959e+01 3.67240e+00 72 2022 8 1.88912e+01 3.07362e+00 65 2022 9 1.32909e+01 3.81560e+00 144 2022 10 1.31569e+01 2.95353e+00 336 2022 11 1.27046e+01 4.47264e+00 165 2022 12 9.26435e+00 7.21592e+00 192 2023 1 9.97537e+00 4.12996e+00 237 2023 2 8.51409e+00 5.96169e+00 180 2023 3 1.41174e+01 2.78060e+00 112 2023 4 2.31609e+01 2.89070e+00 112 2023 5 1.99888e+01 1.04495e+01 139 2023 6 2.43002e+01 4.78251e+00 100 2023 7 2.77119e+01 7.82533e-01 64 2023 8 2.05517e+01 9.22514e+00 160 2023 9 8.02051e+00 2.85185e+00 160 2023 10 9.18553e+00 4.79053e+00 220 2023 11 1.40428e+01 4.00790e+00 176 2023 12 6.72084e+00 4.43866e+00 95 2024 1 3.67446e+00 3.38013e+00 128 2024 2 2.61295e+00 2.60780e+00 144 2024 3 6.98617e+00 4.16754e+00 113 2024 4 nan nan 0