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 6.10018e+01 7.78229e-01 96 2002 8 5.77352e+01 6.57576e-01 48 2002 9 4.98020e+01 2.58338e+00 128 2002 10 4.35887e+01 2.38758e+00 145 2002 11 3.38832e+01 2.16791e+00 224 2002 12 2.94640e+01 4.57684e-01 189 2003 1 3.13507e+01 1.50414e+00 240 2003 2 3.92738e+01 2.56403e+00 118 2003 3 5.13775e+01 2.07173e+00 96 2003 4 5.68130e+01 1.91553e+00 196 2003 5 6.15974e+01 1.14434e+00 48 2003 6 6.30171e+01 9.43732e-02 41 2003 7 6.11039e+01 4.87742e-01 55 2003 8 5.71784e+01 9.61534e-01 48 2003 9 5.08942e+01 2.29933e+00 112 2003 10 4.17176e+01 2.57534e+00 208 2003 11 3.37675e+01 1.90774e+00 286 2003 12 2.95177e+01 4.86673e-01 176 2004 1 3.19681e+01 1.45663e+00 152 2004 2 4.14778e+01 2.03536e+00 96 2004 3 4.95824e+01 2.31745e+00 232 2004 4 5.64159e+01 2.07532e+00 155 2004 5 6.20817e+01 8.62516e-01 162 2004 6 6.30669e+01 7.54967e-02 93 2004 7 6.18840e+01 1.57535e-01 64 2004 8 5.72459e+01 1.32087e+00 112 2004 9 5.02572e+01 2.73841e+00 144 2004 10 4.21539e+01 2.31636e+00 115 2004 11 3.39407e+01 2.11155e+00 156 2004 12 2.92366e+01 1.71600e-01 128 2005 1 3.26190e+01 1.51289e+00 143 2005 2 3.93482e+01 1.59346e+00 96 2005 3 4.91762e+01 2.95532e+00 208 2005 4 5.65794e+01 1.40631e+00 84 2005 5 6.15145e+01 9.27722e-01 159 2005 6 6.28820e+01 5.00661e-01 122 2005 7 6.14116e+01 8.10507e-01 101 2005 8 5.83847e+01 1.48144e+00 56 2005 9 5.08418e+01 2.92768e+00 84 2005 10 4.16136e+01 2.74314e+00 231 2005 11 3.40889e+01 1.95284e+00 232 2005 12 2.95920e+01 5.89259e-01 176 2006 1 3.16821e+01 1.95402e+00 176 2006 2 3.98602e+01 2.65037e+00 192 2006 3 4.89377e+01 2.92823e+00 230 2006 4 5.64611e+01 2.00885e+00 189 2006 5 6.17928e+01 1.03282e+00 144 2006 6 6.29788e+01 3.30290e-01 84 2006 7 6.10122e+01 6.58108e-01 80 2006 8 5.90843e+01 6.96619e-01 137 2006 9 4.99729e+01 2.82288e+00 144 2006 10 4.24591e+01 3.05909e+00 224 2006 11 3.41637e+01 1.93482e+00 234 2006 12 2.95239e+01 5.04297e-01 112 2007 1 3.23215e+01 1.91255e+00 62 2007 2 4.03013e+01 2.29115e+00 217 2007 3 4.92325e+01 2.76273e+00 303 2007 4 5.67476e+01 1.95480e+00 201 2007 5 6.16827e+01 1.18781e+00 96 2007 6 6.29184e+01 2.18756e-01 64 2007 7 6.10086e+01 7.09013e-01 125 2007 8 5.72119e+01 1.17691e+00 84 2007 9 4.88737e+01 2.22000e+00 112 2007 10 4.33532e+01 1.66581e+00 144 2007 11 3.43431e+01 2.01576e+00 272 2007 12 2.97144e+01 5.32378e-01 130 2008 1 3.13808e+01 1.98631e+00 208 2008 2 3.99321e+01 2.94493e+00 272 2008 3 5.05452e+01 2.70210e+00 207 2008 4 5.71851e+01 1.64236e+00 190 2008 5 6.22319e+01 1.02515e+00 117 2008 6 6.30232e+01 1.43965e-01 128 2008 7 6.18602e+01 1.71829e-01 32 2008 8 5.76149e+01 1.94899e+00 48 2008 9 5.10008e+01 2.24758e+00 144 2008 10 4.16819e+01 2.83941e+00 272 2008 11 3.41473e+01 1.78046e+00 256 2008 12 2.94801e+01 5.05399e-01 240 2009 1 3.21057e+01 1.37263e+00 129 2009 2 3.97751e+01 2.49434e+00 232 2009 3 4.81563e+01 2.17577e+00 171 2009 4 5.72237e+01 1.82231e+00 144 2009 5 6.17692e+01 9.12423e-01 128 2009 6 6.30737e+01 7.63436e-02 53 2009 7 6.20207e+01 9.84052e-01 68 2009 8 5.83391e+01 1.36764e+00 93 2009 9 5.17429e+01 2.14535e+00 91 2009 10 4.21084e+01 2.30406e+00 204 2009 11 3.43347e+01 1.77453e+00 176 2009 12 2.95184e+01 4.29091e-01 64 2010 1 3.14006e+01 1.59130e+00 158 2010 2 4.08091e+01 2.26015e+00 190 2010 3 4.89304e+01 3.17347e+00 208 2010 4 5.64075e+01 1.73888e+00 208 2010 5 6.22437e+01 6.10976e-01 105 2010 6 6.29582e+01 1.28146e-01 128 2010 7 6.09152e+01 8.13879e-01 64 2010 8 5.89456e+01 1.24166e+00 78 2010 9 5.09883e+01 2.10371e+00 177 2010 10 4.25400e+01 2.77043e+00 304 2010 11 3.40489e+01 1.85341e+00 304 2010 12 2.96595e+01 5.60839e-01 240 2011 1 3.18859e+01 1.68598e+00 192 2011 2 4.07673e+01 1.65967e+00 159 2011 3 4.96245e+01 2.25610e+00 192 2011 4 5.60648e+01 1.59398e+00 192 2011 5 6.16401e+01 9.77243e-01 178 2011 6 6.31680e+01 1.15286e-01 128 2011 7 6.11193e+01 1.00923e+00 48 2011 8 5.77638e+01 1.64176e+00 143 2011 9 5.05293e+01 2.29820e+00 176 2011 10 4.21672e+01 2.90931e+00 269 2011 11 3.43538e+01 1.93821e+00 224 2011 12 2.96589e+01 6.03271e-01 270 2012 1 3.17556e+01 2.07182e+00 272 2012 2 3.99906e+01 1.23591e+00 48 2012 3 4.97884e+01 2.20759e+00 208 2012 4 5.70371e+01 1.73001e+00 176 2012 5 6.16886e+01 8.40053e-01 144 2012 6 6.31427e+01 1.07162e-01 71 2012 7 6.16290e+01 5.17008e-01 128 2012 8 5.65861e+01 1.74818e-01 48 2012 9 5.01759e+01 2.93670e+00 72 2012 10 4.13560e+01 2.22003e+00 208 2012 11 3.39411e+01 2.24345e+00 232 2012 12 2.96308e+01 5.39824e-01 112 2013 1 3.33111e+01 1.49118e+00 124 2013 2 3.92292e+01 2.25334e+00 172 2013 3 4.94452e+01 3.04862e+00 192 2013 4 5.67978e+01 1.96922e+00 80 2013 5 6.23035e+01 4.76144e-01 68 2013 6 6.30763e+01 1.11312e-01 73 2013 7 6.11994e+01 2.26920e-01 32 2013 8 5.81663e+01 1.17376e+00 46 2013 9 5.09941e+01 2.67326e+00 176 2013 10 4.13722e+01 2.68073e+00 169 2013 11 3.43880e+01 2.18238e+00 90 2013 12 2.93495e+01 4.10438e-01 173 2014 1 3.17343e+01 1.20141e+00 128 2014 2 4.06240e+01 1.89386e+00 144 2014 3 4.98134e+01 3.09612e+00 156 2014 4 5.65299e+01 1.66975e+00 128 2014 5 6.18177e+01 7.60919e-01 103 2014 6 6.30098e+01 1.42193e-01 142 2014 7 6.15539e+01 5.43371e-01 80 2014 8 5.81576e+01 1.44346e+00 133 2014 9 5.09737e+01 2.12294e+00 120 2014 10 4.20672e+01 2.60962e+00 304 2014 11 3.38533e+01 2.16024e+00 240 2014 12 2.96345e+01 3.97882e-01 205 2015 1 3.29187e+01 1.62911e+00 168 2015 2 3.86724e+01 1.66521e+00 174 2015 3 4.98857e+01 3.10438e+00 120 2015 4 5.41525e+01 4.44648e-01 48 2015 5 6.15740e+01 9.83858e-01 162 2015 6 6.30003e+01 7.47583e-02 86 2015 7 6.11442e+01 5.04571e-01 54 2015 8 5.80624e+01 1.21999e+00 82 2015 9 5.18282e+01 2.03505e+00 128 2015 10 4.13672e+01 2.13975e+00 217 2015 11 3.29706e+01 1.84596e+00 194 2015 12 2.96145e+01 3.23735e-01 112 2016 1 3.22271e+01 1.48962e+00 120 2016 2 4.00222e+01 2.54460e+00 288 2016 3 4.86604e+01 2.10719e+00 162 2016 4 5.54083e+01 1.51432e+00 80 2016 5 6.13038e+01 8.90654e-01 127 2016 6 6.29876e+01 1.45486e-01 128 2016 7 6.15842e+01 8.47232e-01 176 2016 8 5.68483e+01 8.01603e-01 128 2016 9 5.02296e+01 2.60030e+00 185 2016 10 4.13601e+01 2.64215e+00 292 2016 11 3.41281e+01 1.76605e+00 206 2016 12 2.94420e+01 5.27823e-01 208 2017 1 3.23600e+01 1.93557e+00 172 2017 2 4.04636e+01 2.46195e+00 229 2017 3 5.00497e+01 2.54523e+00 245 2017 4 5.64205e+01 1.66665e+00 144 2017 5 6.16609e+01 1.13208e+00 128 2017 6 6.29456e+01 1.07832e-01 51 2017 7 6.13956e+01 8.48821e-01 84 2017 8 5.77595e+01 8.35403e-01 72 2017 9 4.99025e+01 2.51318e+00 147 2017 10 4.13354e+01 2.66382e+00 240 2017 11 3.38894e+01 1.99005e+00 305 2017 12 2.94565e+01 2.41830e-01 124 2018 1 3.15960e+01 1.76249e+00 261 2018 2 4.12277e+01 2.23129e+00 79 2018 3 4.86783e+01 2.85286e+00 230 2018 4 5.66346e+01 1.82404e+00 144 2018 5 6.18815e+01 8.65061e-01 86 2018 6 6.29331e+01 8.41187e-02 105 2018 7 6.13523e+01 6.28672e-01 95 2018 8 5.71145e+01 1.55673e+00 51 2018 9 5.09726e+01 2.26643e+00 213 2018 10 4.20584e+01 2.93110e+00 283 2018 11 3.40120e+01 1.72213e+00 112 2018 12 2.95972e+01 4.67166e-01 128 2019 1 3.17968e+01 1.62143e+00 256 2019 2 3.98586e+01 2.67960e+00 80 2019 3 4.93807e+01 2.70367e+00 256 2019 4 5.73431e+01 1.47960e+00 97 2019 5 6.17439e+01 1.17531e+00 192 2019 6 6.30825e+01 1.20545e-01 82 2019 7 6.03631e+01 2.72052e-01 80 2019 8 5.76743e+01 1.60623e+00 131 2019 9 5.09498e+01 2.41638e+00 240 2019 10 4.32529e+01 2.56309e+00 203 2019 11 3.35462e+01 2.04215e+00 176 2019 12 2.97073e+01 5.18823e-01 128 2020 1 3.12326e+01 1.69643e+00 160 2020 2 3.98170e+01 3.17950e+00 132 2020 3 5.01239e+01 2.27076e+00 163 2020 4 5.62406e+01 1.93630e+00 128 2020 5 6.13266e+01 9.24930e-01 128 2020 6 6.31106e+01 1.16651e-01 96 2020 7 6.10192e+01 3.38168e-03 16 2020 8 5.96434e+01 5.69841e-01 80 2020 9 4.99389e+01 2.30178e+00 91 2020 10 4.15798e+01 2.38672e+00 166 2020 11 3.40516e+01 1.89287e+00 229 2020 12 2.94124e+01 3.96408e-01 242 2021 1 3.18836e+01 2.12451e+00 89 2021 2 4.13225e+01 2.50784e+00 96 2021 3 4.84520e+01 1.88962e+00 133 2021 4 5.61337e+01 1.87359e+00 131 2021 5 6.22796e+01 6.30297e-01 192 2021 6 6.30570e+01 2.66397e-02 48 2021 7 6.12047e+01 7.30819e-01 94 2021 8 5.77058e+01 1.10610e+00 120 2021 9 5.25080e+01 2.10976e+00 62 2021 10 4.02330e+01 2.18364e+00 88 2021 11 3.37593e+01 1.79553e+00 240 2021 12 2.92802e+01 4.50098e-01 126 2022 1 3.18875e+01 2.05739e+00 240 2022 2 4.00721e+01 2.80313e+00 161 2022 3 4.96484e+01 3.15861e+00 192 2022 4 5.82622e+01 4.24400e-01 75 2022 5 6.17359e+01 7.76935e-01 92 2022 6 6.30160e+01 1.73872e-01 114 2022 7 6.07212e+01 6.60353e-01 96 2022 8 5.76887e+01 1.80557e+00 96 2022 9 4.98047e+01 1.62828e+00 171 2022 10 4.26252e+01 2.73231e+00 289 2022 11 3.47668e+01 1.91078e+00 176 2022 12 2.94905e+01 4.84352e-01 206 2023 1 3.18328e+01 1.73102e+00 248 2023 2 3.96850e+01 2.47894e+00 179 2023 3 4.90450e+01 2.06346e+00 176 2023 4 5.71943e+01 1.43264e+00 96 2023 5 6.12901e+01 1.06232e+00 112 2023 6 6.29805e+01 1.48895e-01 114 2023 7 6.15288e+01 9.79490e-01 64 2023 8 5.77352e+01 1.19129e+00 140 2023 9 5.11848e+01 1.78852e+00 144 2023 10 4.06796e+01 2.45914e+00 224 2023 11 3.47971e+01 1.96871e+00 192 2023 12 2.91212e+01 1.98969e-01 80 2024 1 3.17256e+01 1.97402e+00 99 2024 2 4.04929e+01 2.44339e+00 158 2024 3 5.03728e+01 2.90736e+00 112 2024 4 nan nan 0