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 5.34617e+00 1.37598e-01 24 2002 8 6.64577e+00 1.08614e+00 48 2002 9 8.15064e+00 3.14509e+00 92 2002 10 7.81375e+00 8.74495e-01 96 2002 11 8.65894e+00 1.31748e+00 144 2002 12 6.63027e+00 9.27809e-01 128 2003 1 7.37356e+00 1.39192e+00 112 2003 2 5.56558e+00 6.09227e-01 128 2003 3 1.18344e+01 8.88846e-01 28 2003 4 8.74510e+00 1.51364e+00 98 2003 5 7.14142e+00 3.31221e-01 32 2003 6 7.66752e+00 3.68085e-01 32 2003 7 1.12469e+01 7.73364e-01 48 2003 8 9.91096e+00 7.28895e-01 47 2003 9 8.51263e+00 1.01866e+00 112 2003 10 6.07183e+00 7.59512e-01 152 2003 11 6.48076e+00 9.92526e-01 176 2003 12 5.63523e+00 6.98247e-01 164 2004 1 4.60688e+00 3.61844e-01 131 2004 2 8.06269e+00 8.76903e-01 32 2004 3 6.33665e+00 1.13147e+00 160 2004 4 4.78530e+00 6.27948e-01 136 2004 5 4.24259e+00 2.80283e-01 112 2004 6 4.00967e+00 4.97489e-02 16 2004 7 5.75783e+00 4.08408e-01 60 2004 8 6.25066e+00 1.15769e+00 50 2004 9 6.58142e+00 2.38061e+00 46 2004 10 8.41524e+00 1.14402e+00 78 2004 11 6.47850e+00 1.12368e+00 144 2004 12 8.96935e+00 1.02713e+00 49 2005 1 7.19415e+00 6.77209e-01 136 2005 2 5.55542e+00 6.50353e-01 140 2005 3 7.80589e+00 8.19736e-01 144 2005 4 1.05219e+01 6.13075e-02 16 2005 5 6.63597e+00 1.24372e+00 91 2005 6 6.49651e+00 1.19236e+00 40 2005 7 9.13517e+00 1.53524e+00 74 2005 8 8.10088e+00 1.46488e-01 11 2005 9 5.18256e+00 9.93361e-01 58 2005 10 5.26441e+00 6.91127e-01 255 2005 11 4.60507e+00 4.72435e-01 193 2005 12 5.87071e+00 6.91788e-01 120 2006 1 6.65274e+00 6.06740e-01 74 2006 2 6.62297e+00 8.28617e-01 141 2006 3 6.41412e+00 7.40701e-01 160 2006 4 4.85062e+00 7.00210e-01 127 2006 5 4.45759e+00 6.33060e-01 128 2006 6 4.17473e+00 1.32741e-01 16 2006 7 4.34784e+00 1.07319e-01 32 2006 8 4.81849e+00 4.79878e-01 75 2006 9 5.84146e+00 7.68450e-01 132 2006 10 5.60575e+00 1.32028e+00 203 2006 11 5.47298e+00 1.43217e+00 208 2006 12 5.48919e+00 1.52360e+00 128 2007 1 7.76150e+00 6.36913e-01 78 2007 2 7.88132e+00 1.36237e+00 153 2007 3 5.75092e+00 8.55635e-01 244 2007 4 5.15080e+00 6.85951e-01 157 2007 5 5.64370e+00 9.00603e-01 64 2007 6 5.58905e+00 1.65520e+00 25 2007 7 4.79197e+00 4.26303e-01 94 2007 8 5.20052e+00 1.75009e-01 48 2007 9 7.26291e+00 6.94982e-01 48 2007 10 6.65701e+00 1.50567e+00 126 2007 11 4.94638e+00 6.75167e-01 240 2007 12 4.39532e+00 3.46742e-01 96 2008 1 5.26760e+00 9.99728e-01 112 2008 2 6.97991e+00 1.39722e+00 193 2008 3 8.34900e+00 1.39194e+00 72 2008 4 6.94700e+00 8.47460e-01 85 2008 5 5.22680e+00 5.83412e-01 96 2008 6 4.92971e+00 6.16607e-01 138 2008 7 4.50066e+00 2.04996e-01 47 2008 8 5.22549e+00 1.47339e-01 16 2008 9 9.39916e+00 1.98544e+00 150 2008 10 6.18496e+00 9.81886e-01 256 2008 11 5.73924e+00 1.24815e+00 239 2008 12 6.99699e+00 2.02870e+00 140 2009 1 7.66578e+00 1.14392e+00 127 2009 2 5.38313e+00 9.14488e-01 206 2009 3 5.93846e+00 1.19536e+00 99 2009 4 9.29954e+00 1.44142e+00 24 2009 5 6.42669e+00 2.97530e-01 64 2009 6 6.63957e+00 2.76978e-01 32 2009 7 4.84657e+00 8.64676e-02 22 2009 8 7.38341e+00 8.69121e-01 57 2009 9 9.63536e+00 3.56307e+00 75 2009 10 7.65500e+00 1.06246e+00 179 2009 11 8.12214e+00 1.61599e+00 142 2009 12 1.13241e+01 1.60788e-01 16 2010 1 1.00814e+01 9.80056e-02 11 2010 2 9.53473e+00 2.27280e-01 48 2010 3 8.54507e+00 1.01744e+00 112 2010 4 6.99053e+00 1.08318e+00 129 2010 5 6.39323e+00 3.98642e-01 48 2010 6 5.82390e+00 6.28427e-01 96 2010 7 5.31711e+00 1.79031e-01 49 2010 8 6.78642e+00 8.42513e-02 8 2010 9 5.74718e+00 5.60184e-01 144 2010 10 5.30262e+00 5.70645e-01 310 2010 11 4.80981e+00 8.02642e-01 272 2010 12 4.85832e+00 7.89974e-01 160 2011 1 5.44125e+00 8.41515e-01 174 2011 2 6.78428e+00 7.18767e-01 131 2011 3 6.24924e+00 6.91522e-01 159 2011 4 6.07057e+00 6.45010e-01 128 2011 5 4.46416e+00 2.59740e-01 80 2011 6 4.90813e+00 3.28624e-01 104 2011 7 4.95684e+00 1.72130e-01 48 2011 8 5.54114e+00 7.09840e-01 86 2011 9 5.15664e+00 4.45878e-01 153 2011 10 5.12740e+00 1.04042e+00 182 2011 11 6.03237e+00 1.33175e+00 128 2011 12 5.06704e+00 7.15650e-01 183 2012 1 5.14558e+00 1.13809e+00 187 2012 2 6.13542e+00 8.76851e-01 59 2012 3 6.82138e+00 1.22363e+00 150 2012 4 5.15968e+00 7.41460e-01 189 2012 5 4.66035e+00 6.04890e-01 111 2012 6 4.99992e+00 6.97418e-02 16 2012 7 8.94902e+00 1.08519e+00 76 2012 8 1.08814e+01 1.36154e+00 30 2012 9 8.56563e+00 5.89649e-01 71 2012 10 7.68231e+00 9.28860e-01 176 2012 11 4.75885e+00 7.27052e-01 197 2012 12 4.27732e+00 1.27551e+00 100 2013 1 4.75170e+00 1.10298e+00 88 2013 2 5.20727e+00 7.24058e-01 89 2013 3 9.77967e+00 1.01640e+00 64 2013 4 9.20720e+00 6.25641e-01 29 2013 5 6.30637e+00 6.52612e-01 63 2013 6 6.00764e+00 4.54114e-01 32 2013 7 8.70498e+00 7.64056e+00 22 2013 8 1.15589e+01 3.50507e+00 41 2013 9 1.03444e+01 1.63814e+00 128 2013 10 7.31406e+00 1.15804e+00 168 2013 11 5.54512e+00 9.20458e-01 82 2013 12 6.76056e+00 9.14372e-01 107 2014 1 9.23889e+00 5.45961e-01 69 2014 2 7.23673e+00 9.54232e-01 121 2014 3 9.21045e+00 1.20765e+00 33 2014 4 9.89321e+00 6.90823e-01 48 2014 5 8.49664e+00 1.22644e+00 94 2014 6 5.56202e+00 6.38608e-01 52 2014 7 5.01834e+00 3.12689e-01 57 2014 8 5.07654e+00 6.07994e-01 63 2014 9 5.77647e+00 8.59236e-01 144 2014 10 6.12361e+00 1.00994e+00 272 2014 11 6.05434e+00 1.70460e+00 150 2014 12 6.14167e+00 1.17668e+00 144 2015 1 8.59508e+00 9.12452e-01 95 2015 2 8.32213e+00 1.12293e+00 96 2015 3 7.27315e+00 5.55900e-01 121 2015 4 5.89304e+00 2.55302e-01 25 2015 5 7.09947e+00 1.31080e+00 135 2015 6 6.01458e+00 7.08102e-01 59 2015 7 5.68143e+00 7.30005e-01 44 2015 8 6.67162e+00 1.17180e+00 32 2015 9 6.36114e+00 6.49030e-01 99 2015 10 6.05485e+00 6.40725e-01 145 2015 11 8.43850e+00 2.24999e+00 128 2015 12 8.45992e+00 9.14830e-01 137 2016 1 1.10641e+01 1.42762e-01 12 2016 2 9.48283e+00 4.82154e-01 59 2016 3 8.28478e+00 9.22290e-01 44 2016 4 1.05509e+01 1.17114e+00 39 2016 5 5.42997e+00 7.13297e-01 112 2016 6 4.98051e+00 3.65606e-01 112 2016 7 5.46417e+00 5.49609e-01 160 2016 8 8.45526e+00 8.52431e-01 120 2016 9 8.22325e+00 1.35798e+00 99 2016 10 6.43442e+00 1.32120e+00 272 2016 11 4.41164e+00 5.44744e-01 188 2016 12 5.29509e+00 7.48560e-01 113 2017 1 8.25355e+00 9.13055e-01 27 2017 2 8.43798e+00 1.45585e+00 101 2017 3 6.40586e+00 1.51856e+00 168 2017 4 5.97551e+00 9.92704e-01 100 2017 5 4.80794e+00 1.02287e+00 79 2017 6 7.89471e+00 2.21424e+00 44 2017 7 7.84090e+00 8.47253e-01 53 2017 8 6.76742e+00 1.09661e+00 48 2017 9 6.46269e+00 8.28945e-01 104 2017 10 6.60094e+00 1.60029e+00 193 2017 11 4.97024e+00 7.90209e-01 236 2017 12 4.43975e+00 3.85637e-01 111 2018 1 4.97619e+00 1.18327e+00 201 2018 2 7.32359e+00 2.30517e+00 80 2018 3 6.33696e+00 1.09257e+00 176 2018 4 5.32722e+00 4.35474e-01 135 2018 5 5.50286e+00 9.35793e-01 91 2018 6 7.07161e+00 6.02911e-01 49 2018 7 6.00327e+00 4.77170e-01 78 2018 8 6.98573e+00 3.05003e-01 16 2018 9 8.69412e+00 2.03337e+00 168 2018 10 1.02107e+01 1.23688e+00 241 2018 11 8.08495e+00 9.09231e-01 84 2018 12 9.48646e+00 8.00101e-01 20 2019 1 9.82630e+00 5.48054e-02 11 2019 2 9.82040e+00 8.27949e-01 48 2019 3 7.50651e+00 7.39899e-01 171 2019 4 6.55539e+00 5.76607e-01 73 2019 5 5.59624e+00 8.09540e-01 140 2019 6 5.30625e+00 7.86065e-01 85 2019 7 6.34082e+00 8.65301e-01 70 2019 8 6.65192e+00 2.11252e+00 129 2019 9 6.55704e+00 1.24603e+00 217 2019 10 5.92237e+00 1.05177e+00 144 2019 11 5.05062e+00 1.19794e+00 153 2019 12 5.63530e+00 1.33704e+00 53 2020 1 8.48616e+00 5.44365e-01 48 2020 2 7.69951e+00 5.52547e-01 34 2020 3 9.67469e+00 7.28882e-01 50 2020 4 7.59079e+00 6.28199e-01 34 2020 5 6.63022e+00 1.12412e+00 36 2020 6 7.66176e+00 7.91623e-01 80 2020 7 7.95167e+00 5.61212e-02 16 2020 8 4.84931e+00 1.88615e-01 34 2020 9 1.02972e+01 1.72392e+00 66 2020 10 7.63248e+00 6.56517e-01 112 2020 11 6.47797e+00 1.02701e+00 186 2020 12 5.66848e+00 8.21211e-01 243 2021 1 8.22638e+00 4.00946e-01 71 2021 2 nan nan 0 2021 3 8.28308e+00 9.55134e-01 73 2021 4 7.22524e+00 1.00349e+00 145 2021 5 6.13437e+00 1.07299e+00 92 2021 6 5.20244e+00 6.69836e-01 32 2021 7 8.34122e+00 8.78133e-01 64 2021 8 8.12470e+00 1.61054e+00 90 2021 9 1.01485e+01 1.33234e+00 83 2021 10 9.41244e+00 7.09395e-01 107 2021 11 5.60417e+00 8.00398e-01 210 2021 12 5.50242e+00 3.92262e-01 117 2022 1 7.04190e+00 1.14779e+00 66 2022 2 6.92311e+00 7.51663e-01 76 2022 3 7.57407e+00 1.34462e+00 144 2022 4 7.47161e+00 5.58993e-01 32 2022 5 6.23045e+00 1.09697e+00 44 2022 6 5.76101e+00 6.70614e-01 119 2022 7 5.41610e+00 5.47697e-01 112 2022 8 6.48753e+00 6.58750e-01 74 2022 9 9.51653e+00 2.20156e+00 100 2022 10 5.80477e+00 7.43368e-01 302 2022 11 5.59908e+00 9.77392e-01 147 2022 12 5.54384e+00 1.18212e+00 179 2023 1 5.45978e+00 5.67982e-01 143 2023 2 8.83310e+00 1.28507e+00 81 2023 3 6.73951e+00 5.42696e-01 112 2023 4 7.46280e+00 1.23776e+00 64 2023 5 4.60693e+00 4.12978e-01 48 2023 6 6.60115e+00 9.44379e-01 55 2023 7 6.47270e+00 5.37630e-01 32 2023 8 5.14151e+00 3.61401e-01 57 2023 9 7.13678e+00 1.82233e+00 128 2023 10 6.76703e+00 1.39993e+00 195 2023 11 4.66502e+00 8.04818e-01 120 2023 12 1.03185e+01 2.11086e+00 58 2024 1 9.01043e+00 6.29423e-01 62 2024 2 7.38790e+00 8.49258e-01 43 2024 3 8.24437e+00 4.33828e-01 36 2024 4 nan nan 0