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 1.98363e+01 4.04721e+00 80 2002 8 2.04870e+01 6.14148e+00 128 2002 9 1.49462e+01 9.02109e+00 158 2002 10 1.40423e+01 5.21983e+00 222 2002 11 1.57361e+01 4.75975e+00 235 2002 12 9.49296e+00 4.58915e+00 164 2003 1 6.46997e+00 4.36252e+00 272 2003 2 1.43301e+01 3.67320e+00 160 2003 3 7.28419e-01 8.99487e-01 44 2003 4 1.29408e+01 1.79488e+01 104 2003 5 1.69996e+00 1.89645e+00 28 2003 6 1.99406e+01 1.39638e+01 87 2003 7 5.75226e+00 3.77746e+00 48 2003 8 1.48147e+01 1.09793e+01 108 2003 9 1.84501e+01 1.40991e+01 168 2003 10 1.23830e+01 8.85026e+00 223 2003 11 1.40122e+01 4.80251e+00 254 2003 12 1.01015e+01 3.91441e+00 224 2004 1 1.04052e+01 4.29766e+00 208 2004 2 1.36666e+01 5.62124e+00 48 2004 3 7.42713e+00 4.57581e+00 247 2004 4 9.09081e+00 4.68982e+00 163 2004 5 1.23758e+01 6.19366e+00 208 2004 6 1.54103e+01 4.13687e+00 114 2004 7 5.96982e+00 4.35082e+00 74 2004 8 1.48294e+01 9.38084e+00 138 2004 9 1.02135e+01 9.26568e+00 112 2004 10 1.44685e-01 2.82395e-01 64 2004 11 5.02464e+00 1.07203e+01 101 2004 12 7.58977e-01 1.11431e+00 144 2005 1 4.54123e+00 4.53220e+00 192 2005 2 2.60058e+00 1.53723e+00 128 2005 3 5.09850e+00 2.97564e+00 160 2005 4 7.84135e+00 1.08464e+01 76 2005 5 1.79911e+01 1.46448e+01 129 2005 6 1.42546e+01 1.45707e+01 96 2005 7 8.62416e+00 1.03693e+01 128 2005 8 3.35489e+01 5.53257e-01 16 2005 9 4.98226e+00 3.04105e+00 98 2005 10 1.03736e+01 6.59945e+00 240 2005 11 1.27763e+01 3.04211e+00 272 2005 12 1.32738e+01 4.42718e+00 256 2006 1 9.86870e+00 4.63130e+00 217 2006 2 6.75820e+00 4.15423e+00 192 2006 3 3.70587e+00 5.00033e+00 247 2006 4 2.05632e+00 2.51834e+00 127 2006 5 1.49803e+01 7.53398e+00 204 2006 6 1.43379e+01 5.90260e+00 96 2006 7 1.31838e+01 8.22281e+00 144 2006 8 1.49721e+01 6.89648e+00 108 2006 9 1.22385e+01 5.03797e+00 185 2006 10 1.31995e+01 4.91155e+00 208 2006 11 1.74130e+01 4.75606e+00 265 2006 12 1.40134e+01 7.42026e+00 141 2007 1 1.84216e+01 4.93538e+00 144 2007 2 1.89709e+01 6.22845e+00 212 2007 3 1.68305e+01 4.37513e+00 302 2007 4 1.46207e+01 5.99383e+00 192 2007 5 1.90015e+01 2.74524e+00 100 2007 6 1.77814e+01 3.01037e+00 155 2007 7 1.26263e+01 2.73178e+00 117 2007 8 1.37778e+01 5.92039e+00 129 2007 9 1.24770e+01 3.91348e+00 165 2007 10 1.81627e+01 3.23475e+00 208 2007 11 2.19435e+01 3.24310e+00 301 2007 12 1.95671e+01 6.86808e+00 234 2008 1 1.97426e+01 6.17701e+00 232 2008 2 1.94722e+01 5.08033e+00 271 2008 3 1.23089e+01 9.80614e+00 240 2008 4 8.99355e+00 1.25110e+01 167 2008 5 6.27444e+00 5.54191e+00 157 2008 6 8.16246e+00 3.71198e+00 111 2008 7 1.21450e+01 7.44445e+00 124 2008 8 1.15610e+01 2.97854e+00 96 2008 9 9.60793e+00 6.44603e+00 221 2008 10 7.48101e+00 4.24361e+00 272 2008 11 1.11824e+01 4.33641e+00 256 2008 12 5.26461e+00 3.79899e+00 224 2009 1 6.77912e+00 3.89588e+00 176 2009 2 8.61104e+00 2.56129e+00 256 2009 3 1.52988e+01 5.02617e+00 256 2009 4 8.54566e+00 5.49300e+00 123 2009 5 4.43485e+00 4.17078e+00 88 2009 6 1.31523e+01 8.23062e+00 140 2009 7 1.41903e+01 8.66927e+00 96 2009 8 1.08063e+01 5.25502e+00 144 2009 9 1.52191e+01 8.83831e+00 221 2009 10 1.31281e+01 4.62795e+00 199 2009 11 1.33758e+01 4.38976e+00 170 2009 12 9.68589e+00 3.65965e+00 64 2010 1 3.34147e+00 2.38526e+00 237 2010 2 3.35681e+00 5.09136e+00 190 2010 3 2.15267e+00 3.42299e+00 240 2010 4 1.24455e+00 1.87439e+00 138 2010 5 8.02492e+00 1.01407e+01 170 2010 6 1.18054e+01 4.50991e+00 144 2010 7 1.23217e+01 7.12526e+00 112 2010 8 1.41776e+01 6.84617e+00 105 2010 9 1.14407e+01 6.79470e+00 199 2010 10 1.34409e+01 5.39063e+00 376 2010 11 1.75652e+01 4.36789e+00 305 2010 12 1.63343e+01 6.83448e+00 272 2011 1 1.71375e+01 3.03842e+00 203 2011 2 1.51725e+01 3.59341e+00 192 2011 3 1.46889e+01 3.61710e+00 224 2011 4 1.43638e+01 5.25148e+00 272 2011 5 1.48065e+01 5.92958e+00 192 2011 6 1.62923e+01 2.14116e+00 80 2011 7 1.53555e+01 5.23900e+00 112 2011 8 1.69393e+01 5.86115e+00 180 2011 9 1.75392e+01 6.45053e+00 194 2011 10 1.90919e+01 5.72713e+00 256 2011 11 2.45678e+01 4.61701e+00 272 2011 12 2.51582e+01 4.29686e+00 256 2012 1 2.20559e+01 6.72494e+00 312 2012 2 2.27372e+01 4.83351e+00 96 2012 3 1.96373e+01 4.74098e+00 203 2012 4 1.81897e+01 3.63852e+00 250 2012 5 1.65937e+01 3.36955e+00 121 2012 6 1.53746e+01 9.89894e+00 104 2012 7 8.97430e+00 9.12480e+00 128 2012 8 1.01861e+01 9.98776e+00 61 2012 9 8.43023e+00 9.84724e+00 115 2012 10 1.22939e+01 1.35952e+01 228 2012 11 6.61647e+00 4.09569e+00 256 2012 12 5.17800e+00 3.10927e+00 192 2013 1 1.19955e+01 7.46740e+00 176 2013 2 1.47065e+01 4.83425e+00 160 2013 3 8.35201e+00 6.80124e+00 192 2013 4 9.96776e+00 1.01312e+01 93 2013 5 7.52887e+00 4.73941e+00 132 2013 6 1.34785e+01 1.14672e+01 107 2013 7 9.26722e+00 2.38724e+00 32 2013 8 1.66100e+01 2.02434e+01 53 2013 9 1.59494e+01 1.69874e+01 153 2013 10 1.48529e+01 1.26471e+01 246 2013 11 8.61304e+00 5.85770e+00 132 2013 12 1.67441e+01 8.42579e+00 180 2014 1 1.53969e+01 2.06168e+00 112 2014 2 4.62490e+00 2.79919e+00 159 2014 3 3.46775e+00 4.11648e+00 168 2014 4 2.94894e+00 2.45649e+00 112 2014 5 2.04901e+01 1.83216e+01 53 2014 6 2.14939e+01 1.76927e+01 85 2014 7 1.01265e+01 8.49379e+00 142 2014 8 1.65891e+01 4.75766e+00 99 2014 9 1.80734e+01 8.62214e+00 155 2014 10 1.05311e+01 6.51103e+00 347 2014 11 1.55647e+01 5.38416e+00 257 2014 12 1.93053e+01 5.97885e+00 224 2015 1 1.84386e+01 7.81892e+00 192 2015 2 1.22752e+01 8.02227e+00 176 2015 3 5.33990e+00 6.11587e+00 128 2015 4 2.87577e+00 2.95316e+00 48 2015 5 7.77277e+00 9.58261e+00 234 2015 6 1.48572e+01 5.63644e+00 115 2015 7 8.80459e+00 9.42940e+00 83 2015 8 9.54420e+00 3.50440e+00 112 2015 9 9.15826e+00 6.73698e+00 64 2015 10 8.79415e+00 4.52045e+00 224 2015 11 9.54096e+00 5.93097e+00 206 2015 12 1.40015e+01 4.35537e+00 128 2016 1 1.49750e+01 4.71742e+00 176 2016 2 6.90632e+00 5.74112e+00 288 2016 3 4.98094e+00 2.54424e+00 176 2016 4 8.19367e+00 1.05962e+01 128 2016 5 4.32159e+00 3.55644e+00 192 2016 6 7.73963e+00 3.89423e+00 128 2016 7 7.70887e+00 4.58283e+00 222 2016 8 1.10617e+01 7.14471e+00 192 2016 9 8.32473e+00 9.78273e+00 208 2016 10 1.40720e+01 5.73231e+00 256 2016 11 1.75830e+01 4.89155e+00 213 2016 12 2.08793e+01 3.20642e+00 215 2017 1 1.94679e+01 5.36878e+00 192 2017 2 1.26278e+01 4.40872e+00 267 2017 3 1.28174e+01 4.90570e+00 320 2017 4 9.34555e+00 2.44858e+00 203 2017 5 9.10116e+00 3.20319e+00 128 2017 6 1.59182e+01 5.95949e+00 112 2017 7 1.54050e+01 4.69301e+00 48 2017 8 1.41259e+01 9.21649e+00 144 2017 9 1.02988e+01 5.42166e+00 187 2017 10 4.37432e+00 5.34784e+00 217 2017 11 1.43098e+01 7.35659e+00 282 2017 12 1.63787e+01 5.38822e+00 192 2018 1 1.55241e+01 4.16907e+00 224 2018 2 1.41512e+01 3.09949e+00 126 2018 3 1.42433e+01 5.06884e+00 202 2018 4 8.32702e+00 5.37226e+00 144 2018 5 9.11510e+00 4.74682e+00 124 2018 6 8.70599e+00 4.92353e+00 64 2018 7 1.78253e+01 1.30968e+01 80 2018 8 1.21618e+01 8.13821e+00 114 2018 9 2.02120e+01 1.35090e+01 252 2018 10 1.26638e+01 9.94353e+00 272 2018 11 6.93703e+00 6.23764e+00 96 2018 12 3.73401e+00 2.21671e+00 185 2019 1 3.18961e+00 7.63165e+00 167 2019 2 1.08226e+01 1.16887e+01 99 2019 3 5.69872e+00 6.51271e+00 157 2019 4 1.51808e+00 1.54789e+00 103 2019 5 8.26878e+00 3.96981e+00 199 2019 6 1.69229e+01 5.30627e+00 68 2019 7 1.43771e+01 4.76194e+00 103 2019 8 1.11143e+01 9.15690e+00 144 2019 9 1.47242e+01 5.53779e+00 216 2019 10 1.17048e+01 4.91671e+00 198 2019 11 1.69889e+01 4.85807e+00 184 2019 12 1.44034e+01 6.09052e+00 160 2020 1 1.42390e+01 4.51359e+00 146 2020 2 1.57869e+01 5.65060e+00 152 2020 3 1.04177e+01 7.00520e+00 192 2020 4 6.59929e+00 2.52172e+00 190 2020 5 9.28670e+00 4.10826e+00 176 2020 6 8.90580e+00 5.18730e+00 140 2020 7 1.44300e+01 1.14107e+01 109 2020 8 1.06650e+01 5.05917e+00 32 2020 9 1.46964e+01 1.55954e+01 132 2020 10 8.69036e+00 8.35533e+00 255 2020 11 7.88603e+00 7.81232e+00 253 2020 12 8.80794e+00 5.02750e+00 166 2021 1 3.98093e+00 2.65487e+00 144 2021 2 1.65794e+00 1.11179e+00 108 2021 3 1.20007e+00 1.99172e+00 175 2021 4 2.50928e-01 5.18100e-01 139 2021 5 4.37638e+00 5.70424e+00 159 2021 6 1.82423e+01 1.39732e+01 63 2021 7 8.71535e+00 7.23156e+00 77 2021 8 7.37028e+00 1.46607e+01 112 2021 9 1.04140e+01 1.37820e+01 141 2021 10 8.81086e+00 1.11482e+01 176 2021 11 1.75242e+00 2.78506e+00 208 2021 12 5.87358e+00 9.62327e+00 129 2022 1 2.60410e+00 2.68237e+00 240 2022 2 4.86096e+00 3.41448e+00 204 2022 3 3.49031e+00 3.64575e+00 208 2022 4 1.27650e+01 1.19641e+01 63 2022 5 1.03399e+01 1.10001e+01 160 2022 6 1.34777e+01 4.87548e+00 144 2022 7 1.48613e+01 1.09374e+01 81 2022 8 1.82260e+01 6.01167e+00 112 2022 9 2.15094e+01 1.01289e+01 112 2022 10 7.63296e+00 4.07614e+00 334 2022 11 1.43925e+01 5.78585e+00 125 2022 12 1.50328e+01 5.29221e+00 241 2023 1 1.51691e+01 5.25203e+00 224 2023 2 1.62191e+01 3.54974e+00 170 2023 3 1.26414e+01 5.30434e+00 184 2023 4 1.39610e+01 4.74261e+00 112 2023 5 1.18313e+01 5.14460e+00 112 2023 6 1.70567e+01 6.02628e+00 80 2023 7 1.47303e+01 2.02636e+00 96 2023 8 1.44581e+01 1.00976e+01 173 2023 9 7.41366e+00 6.21480e+00 149 2023 10 1.05444e+01 4.97325e+00 202 2023 11 1.26587e+01 6.12866e+00 176 2023 12 8.70715e+00 6.02441e+00 80 2024 1 3.71476e+00 3.09392e+00 128 2024 2 3.26180e+00 3.21250e+00 137 2024 3 1.87226e+00 1.39055e+00 48 2024 4 nan nan 0