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 6.19199e+01 6.28117e-01 97 2002 8 5.73253e+01 1.08929e+00 96 2002 9 5.15103e+01 1.32321e+00 39 2002 10 4.30636e+01 2.76392e+00 144 2002 11 3.32309e+01 2.04959e+00 160 2002 12 2.96003e+01 4.43147e-01 176 2003 1 3.20648e+01 1.53742e+00 192 2003 2 3.86440e+01 2.18612e+00 160 2003 3 5.05717e+01 2.58240e+00 112 2003 4 5.68254e+01 2.03879e+00 142 2003 5 6.21346e+01 1.02385e+00 111 2003 6 6.27453e+01 8.78986e-02 44 2003 7 6.19453e+01 8.13116e-01 79 2003 8 5.70965e+01 9.27621e-01 78 2003 9 5.18291e+01 1.69195e+00 96 2003 10 4.18845e+01 2.53398e+00 192 2003 11 3.37112e+01 2.14292e+00 196 2003 12 2.94852e+01 3.94469e-01 194 2004 1 3.20912e+01 1.50595e+00 160 2004 2 4.21968e+01 1.42158e+00 41 2004 3 4.97191e+01 2.52690e+00 224 2004 4 5.72349e+01 2.08431e+00 161 2004 5 6.18080e+01 8.87941e-01 208 2004 6 6.26455e+01 9.39584e-02 79 2004 7 6.22201e+01 6.62531e-01 40 2004 8 5.80270e+01 1.87997e+00 80 2004 9 5.06125e+01 1.94996e+00 144 2004 10 4.26813e+01 2.31416e+00 80 2004 11 3.44615e+01 1.95651e+00 112 2004 12 2.92986e+01 1.30207e-01 112 2005 1 3.21194e+01 1.47348e+00 144 2005 2 3.90296e+01 1.60112e+00 111 2005 3 4.74125e+01 2.00666e+00 184 2005 4 5.75347e+01 1.40737e+00 153 2005 5 6.17309e+01 6.81814e-01 176 2005 6 6.28481e+01 1.33550e-01 128 2005 7 6.16450e+01 7.63336e-01 121 2005 8 5.70155e+01 1.88795e+00 63 2005 9 5.22134e+01 2.06462e+00 144 2005 10 4.15359e+01 2.19296e+00 208 2005 11 3.39870e+01 2.10079e+00 185 2005 12 2.95138e+01 5.05283e-01 144 2006 1 3.18979e+01 1.72705e+00 185 2006 2 4.00728e+01 2.93686e+00 152 2006 3 4.96788e+01 3.26508e+00 222 2006 4 5.75818e+01 1.59706e+00 161 2006 5 6.19644e+01 8.12199e-01 176 2006 6 6.27707e+01 1.70687e-01 180 2006 7 6.18283e+01 6.28226e-01 80 2006 8 5.79981e+01 1.78505e+00 128 2006 9 5.16694e+01 2.53566e+00 144 2006 10 4.26259e+01 2.94082e+00 175 2006 11 3.40723e+01 2.15291e+00 208 2006 12 2.98021e+01 5.38567e-01 163 2007 1 3.20579e+01 1.63943e+00 112 2007 2 3.95824e+01 2.11269e+00 128 2007 3 4.91223e+01 2.60296e+00 256 2007 4 5.85136e+01 1.53955e+00 176 2007 5 6.12066e+01 7.07023e-01 112 2007 6 6.28138e+01 2.73336e-01 132 2007 7 6.21543e+01 5.62871e-01 112 2007 8 5.70705e+01 1.02688e+00 96 2007 9 4.93854e+01 1.99832e+00 72 2007 10 4.33863e+01 2.54119e+00 190 2007 11 3.47839e+01 1.73031e+00 214 2007 12 2.96075e+01 3.40953e-01 96 2008 1 3.16721e+01 2.16703e+00 144 2008 2 4.05441e+01 2.79642e+00 228 2008 3 4.99814e+01 2.57605e+00 144 2008 4 5.88342e+01 1.18895e+00 128 2008 5 6.20161e+01 9.23576e-01 144 2008 6 6.27636e+01 2.29253e-01 173 2008 7 6.20375e+01 4.80604e-01 64 2008 8 5.72675e+01 1.40193e+00 73 2008 9 5.11126e+01 2.18938e+00 160 2008 10 4.04523e+01 2.47458e+00 192 2008 11 3.41037e+01 1.83497e+00 240 2008 12 2.96738e+01 5.33399e-01 112 2009 1 3.19070e+01 1.75889e+00 184 2009 2 3.93477e+01 2.58076e+00 176 2009 3 4.78878e+01 2.41474e+00 141 2009 4 5.83064e+01 1.78696e+00 112 2009 5 6.13369e+01 7.45911e-01 105 2009 6 6.27694e+01 9.12921e-02 128 2009 7 6.20767e+01 3.07638e-01 32 2009 8 5.73431e+01 1.47298e+00 96 2009 9 5.01601e+01 2.29118e+00 118 2009 10 4.26797e+01 2.70129e+00 147 2009 11 3.48713e+01 2.02606e+00 133 2009 12 2.93769e+01 1.20926e-01 48 2010 1 3.11420e+01 1.41901e+00 144 2010 2 4.02644e+01 2.10563e+00 112 2010 3 5.02261e+01 2.78209e+00 158 2010 4 5.74373e+01 1.86694e+00 201 2010 5 6.21933e+01 7.92811e-01 144 2010 6 6.26748e+01 1.26469e-01 144 2010 7 6.20814e+01 8.38330e-01 56 2010 8 5.80309e+01 9.41177e-01 66 2010 9 5.09402e+01 2.36289e+00 208 2010 10 4.27642e+01 2.76272e+00 314 2010 11 3.42077e+01 1.92572e+00 240 2010 12 2.98605e+01 4.88429e-01 194 2011 1 3.18544e+01 1.72609e+00 160 2011 2 4.08105e+01 1.63799e+00 161 2011 3 4.95921e+01 1.46540e+00 144 2011 4 5.74691e+01 1.93499e+00 144 2011 5 6.17035e+01 8.06007e-01 160 2011 6 6.28303e+01 2.47538e-01 117 2011 7 6.18171e+01 8.53800e-01 96 2011 8 5.74802e+01 1.31167e+00 160 2011 9 5.10209e+01 2.57369e+00 172 2011 10 4.28254e+01 2.89628e+00 288 2011 11 3.40367e+01 2.23048e+00 160 2011 12 2.96150e+01 5.80833e-01 128 2012 1 3.19203e+01 1.82477e+00 239 2012 2 3.98882e+01 1.24397e+00 48 2012 3 4.96219e+01 2.33451e+00 160 2012 4 5.80634e+01 1.61055e+00 150 2012 5 6.19084e+01 8.08966e-01 176 2012 6 6.29356e+01 1.74074e-01 81 2012 7 6.17634e+01 6.93658e-01 62 2012 8 5.75150e+01 1.37415e+00 64 2012 9 5.11455e+01 2.49385e+00 144 2012 10 4.17381e+01 2.19191e+00 240 2012 11 3.42467e+01 1.98816e+00 272 2012 12 2.97097e+01 4.83826e-01 96 2013 1 3.33620e+01 1.61067e+00 138 2013 2 3.99151e+01 2.85698e+00 76 2013 3 5.00714e+01 2.84983e+00 202 2013 4 5.74945e+01 1.82006e+00 80 2013 5 6.18953e+01 7.71640e-01 128 2013 6 6.28510e+01 1.68394e-01 73 2013 7 6.16426e+01 4.04994e-01 48 2013 8 5.73709e+01 1.55673e+00 128 2013 9 5.12619e+01 2.51216e+00 208 2013 10 4.20672e+01 2.44177e+00 197 2013 11 3.34791e+01 2.33880e+00 112 2013 12 2.93535e+01 2.32084e-01 95 2014 1 3.19853e+01 1.26834e+00 112 2014 2 4.03729e+01 1.95821e+00 144 2014 3 4.93084e+01 2.74037e+00 160 2014 4 5.73193e+01 2.03184e+00 134 2014 5 6.18584e+01 6.90663e-01 144 2014 6 6.27365e+01 1.30443e-01 101 2014 7 6.20199e+01 7.71416e-01 118 2014 8 5.70021e+01 1.48588e+00 165 2014 9 5.17086e+01 1.95077e+00 118 2014 10 4.16792e+01 2.61782e+00 272 2014 11 3.38353e+01 2.28120e+00 224 2014 12 2.97126e+01 4.36117e-01 176 2015 1 3.27691e+01 1.80160e+00 130 2015 2 3.87681e+01 1.73804e+00 187 2015 3 4.88162e+01 2.50186e+00 160 2015 4 5.44100e+01 4.34715e-01 48 2015 5 6.15401e+01 9.63078e-01 192 2015 6 6.26427e+01 1.89368e-01 167 2015 7 6.17333e+01 8.01080e-01 128 2015 8 5.72448e+01 1.74763e+00 115 2015 9 5.15216e+01 2.16930e+00 128 2015 10 4.21310e+01 1.96724e+00 176 2015 11 3.23713e+01 1.41857e+00 128 2015 12 2.97168e+01 3.22204e-01 91 2016 1 3.15995e+01 1.64202e+00 128 2016 2 3.96116e+01 2.52899e+00 240 2016 3 4.81285e+01 2.39883e+00 114 2016 4 5.73344e+01 2.01186e+00 160 2016 5 6.17221e+01 7.38071e-01 154 2016 6 6.27571e+01 1.13823e-01 144 2016 7 6.17482e+01 7.47021e-01 118 2016 8 5.78520e+01 1.94597e+00 86 2016 9 4.94527e+01 2.04131e+00 119 2016 10 4.16068e+01 2.64062e+00 289 2016 11 3.39723e+01 1.89137e+00 224 2016 12 2.95250e+01 4.59484e-01 144 2017 1 3.24810e+01 1.85648e+00 130 2017 2 3.98073e+01 2.36110e+00 206 2017 3 5.04096e+01 2.46380e+00 176 2017 4 5.63679e+01 1.26292e+00 144 2017 5 6.14756e+01 6.20472e-01 121 2017 6 6.27766e+01 1.17996e-01 48 2017 7 6.17526e+01 6.92919e-01 156 2017 8 5.69988e+01 1.15849e+00 96 2017 9 4.93312e+01 1.72503e+00 130 2017 10 4.14939e+01 2.64189e+00 207 2017 11 3.33421e+01 1.93369e+00 228 2017 12 2.94803e+01 1.92500e-01 128 2018 1 3.20289e+01 1.73023e+00 163 2018 2 4.08948e+01 2.60057e+00 80 2018 3 4.91263e+01 2.95835e+00 132 2018 4 5.76192e+01 1.96425e+00 160 2018 5 6.13145e+01 8.04035e-01 128 2018 6 6.26021e+01 1.30597e-01 80 2018 7 6.18128e+01 6.32947e-01 80 2018 8 5.73472e+01 1.62937e+00 96 2018 9 5.10762e+01 2.27277e+00 135 2018 10 4.25831e+01 2.90667e+00 251 2018 11 3.35326e+01 1.82285e+00 80 2018 12 2.97628e+01 4.85265e-01 64 2019 1 3.21703e+01 1.82638e+00 153 2019 2 4.22168e+01 1.86441e+00 57 2019 3 4.99766e+01 2.95931e+00 182 2019 4 5.89197e+01 9.80831e-01 112 2019 5 6.17268e+01 8.85292e-01 220 2019 6 6.29390e+01 3.15536e-01 96 2019 7 6.21693e+01 4.91454e-01 128 2019 8 5.85976e+01 1.59821e+00 107 2019 9 5.09095e+01 2.53340e+00 304 2019 10 4.33277e+01 2.72553e+00 81 2019 11 3.36124e+01 2.02698e+00 160 2019 12 2.94361e+01 1.13178e-01 80 2020 1 3.13849e+01 1.79442e+00 128 2020 2 3.99126e+01 3.49030e+00 128 2020 3 4.95503e+01 1.99413e+00 158 2020 4 5.71569e+01 2.19224e+00 160 2020 5 6.12179e+01 6.62799e-01 112 2020 6 6.28029e+01 1.17892e-01 96 2020 7 6.15111e+01 6.58195e-01 48 2020 8 5.93809e+01 5.89854e-01 112 2020 9 5.15781e+01 2.82546e+00 96 2020 10 4.23113e+01 2.22902e+00 176 2020 11 3.40564e+01 1.84416e+00 268 2020 12 2.96755e+01 4.49495e-01 192 2021 1 3.20460e+01 1.89656e+00 136 2021 2 4.05681e+01 3.19767e+00 96 2021 3 4.82516e+01 2.00171e+00 124 2021 4 5.67610e+01 2.28033e+00 160 2021 5 6.23660e+01 6.91343e-01 127 2021 6 6.27337e+01 7.49148e-02 34 2021 7 6.16798e+01 4.04706e-01 129 2021 8 5.82336e+01 1.12415e+00 117 2021 9 5.08410e+01 2.51079e+00 144 2021 10 4.20625e+01 2.54912e+00 133 2021 11 3.41089e+01 1.95953e+00 192 2021 12 2.95461e+01 5.17684e-01 85 2022 1 3.21474e+01 1.96687e+00 224 2022 2 3.99160e+01 2.32797e+00 176 2022 3 4.94725e+01 3.02892e+00 240 2022 4 5.89339e+01 7.78964e-01 48 2022 5 6.17899e+01 9.62750e-01 147 2022 6 6.27299e+01 1.43017e-01 160 2022 7 6.20891e+01 7.10100e-01 112 2022 8 5.74473e+01 2.01835e+00 160 2022 9 5.05226e+01 2.20773e+00 200 2022 10 4.26328e+01 2.69481e+00 271 2022 11 3.41645e+01 2.26706e+00 160 2022 12 2.95032e+01 4.63252e-01 140 2023 1 3.18513e+01 1.69897e+00 237 2023 2 3.89564e+01 2.61676e+00 144 2023 3 4.82511e+01 2.37051e+00 144 2023 4 5.74120e+01 1.76201e+00 96 2023 5 6.14909e+01 7.39652e-01 152 2023 6 6.27705e+01 2.35302e-01 100 2023 7 6.14546e+01 8.02647e-01 130 2023 8 5.81369e+01 1.49943e+00 189 2023 9 5.11609e+01 1.62527e+00 109 2023 10 4.02020e+01 2.26456e+00 171 2023 11 3.44789e+01 2.20029e+00 162 2023 12 2.90749e+01 7.96408e-02 48 2024 1 3.18545e+01 1.52327e+00 110 2024 2 4.12391e+01 2.22351e+00 125 2024 3 5.13079e+01 1.94777e+00 96 2024 4 nan nan 0