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 4.04055e-01 2.40776e-01 22 2002 8 1.10985e+00 2.60014e-01 44 2002 9 1.41704e+00 4.03255e-01 46 2002 10 8.70346e-01 3.27090e-01 60 2002 11 1.44143e+00 4.78236e-01 101 2002 12 1.70634e+00 7.72301e-01 133 2003 1 2.15623e+00 1.07184e+00 176 2003 2 1.08358e+00 3.51081e-01 154 2003 3 2.56369e+00 1.13703e+00 64 2003 4 1.72441e+00 5.16941e-01 64 2003 5 nan nan 0 2003 6 1.62494e+00 3.81273e-01 16 2003 7 1.39812e+00 1.87299e-01 14 2003 8 1.55812e+00 4.05471e-01 37 2003 9 1.38164e+00 2.60499e-01 64 2003 10 8.47111e-01 2.31350e-01 160 2003 11 1.11293e+00 5.36963e-01 215 2003 12 1.14120e+00 3.88660e-01 162 2004 1 1.53333e+00 4.12220e-01 88 2004 2 1.98814e+00 5.09199e-01 64 2004 3 1.07408e+00 6.33198e-01 160 2004 4 7.86029e-01 4.20155e-01 46 2004 5 8.68121e-01 3.37125e-01 57 2004 6 1.11132e+00 1.10043e-01 16 2004 7 1.24426e+00 6.31960e-02 19 2004 8 9.11337e-01 1.67012e-01 32 2004 9 1.70708e+00 1.09126e+00 97 2004 10 1.25401e+00 5.13429e-01 80 2004 11 1.66692e+00 5.19690e-01 129 2004 12 1.70950e+00 3.05744e-01 126 2005 1 1.47095e+00 4.47459e-01 115 2005 2 1.57322e+00 5.92458e-01 89 2005 3 1.01301e+00 3.96286e-01 134 2005 4 5.42344e+00 1.03070e+00 32 2005 5 1.17221e+00 6.12112e-01 34 2005 6 1.19770e+00 2.64455e-01 48 2005 7 1.05144e+00 2.21510e-01 41 2005 8 nan nan 0 2005 9 9.55876e-01 3.29505e-01 48 2005 10 9.23751e-01 6.51118e-01 202 2005 11 1.20398e+00 6.85500e-01 133 2005 12 9.72446e-01 3.79462e-01 129 2006 1 1.62142e+00 5.68155e-01 114 2006 2 1.71856e+00 6.76600e-01 152 2006 3 1.34226e+00 5.18269e-01 198 2006 4 9.37214e-01 2.47406e-01 54 2006 5 1.00003e+00 2.09795e-01 58 2006 6 6.50857e-01 4.18849e-01 40 2006 7 6.08991e-01 1.18723e-01 23 2006 8 1.04498e+00 2.88704e-01 28 2006 9 1.16028e+00 2.73656e-01 117 2006 10 1.38999e+00 7.15595e-01 160 2006 11 1.44537e+00 6.17864e-01 212 2006 12 1.37788e+00 8.13404e-01 143 2007 1 1.37696e+00 3.71832e-01 80 2007 2 1.00702e+00 3.93256e-01 106 2007 3 8.93438e-01 4.37142e-01 131 2007 4 1.06889e+00 4.55383e-01 63 2007 5 9.81745e-01 1.02693e-01 16 2007 6 7.84941e-01 3.38142e-01 4 2007 7 1.06827e+00 1.28872e-01 32 2007 8 1.71531e+00 9.81352e-02 16 2007 9 4.98792e-01 3.33077e-01 54 2007 10 1.00101e+00 4.57066e-01 105 2007 11 1.57755e+00 1.09786e+00 141 2007 12 1.23199e+00 6.32463e-01 93 2008 1 2.21223e+00 5.70592e-01 81 2008 2 2.32562e+00 5.48285e-01 108 2008 3 2.34493e+00 7.85213e-01 125 2008 4 1.29804e+00 1.27461e-01 32 2008 5 1.45009e+00 4.81769e-01 22 2008 6 7.60345e-01 3.37292e-01 51 2008 7 6.84328e-01 1.46694e-01 30 2008 8 6.72834e-01 2.83225e-01 64 2008 9 1.16688e+00 4.76914e-01 80 2008 10 1.06263e+00 6.75368e-01 165 2008 11 1.33805e+00 7.61361e-01 244 2008 12 1.83640e+00 6.09813e-01 84 2009 1 1.60688e+00 5.04689e-01 114 2009 2 1.62339e+00 5.85239e-01 128 2009 3 2.17997e+00 1.09571e+00 40 2009 4 2.48657e+00 1.68158e+00 31 2009 5 1.72752e+00 1.06158e-01 16 2009 6 1.59348e+00 3.51481e-02 16 2009 7 nan nan 0 2009 8 nan nan 0 2009 9 1.96912e+00 2.08888e-01 33 2009 10 1.70185e+00 7.52012e-01 93 2009 11 1.31405e+00 5.72582e-01 116 2009 12 2.24323e+00 9.76201e-01 48 2010 1 3.52719e+00 1.46935e+00 124 2010 2 3.65376e+00 7.63677e-01 97 2010 3 2.54166e+00 9.03787e-01 96 2010 4 1.16798e+00 1.54918e-01 64 2010 5 1.10300e+00 2.88487e-01 72 2010 6 1.37899e+00 3.37205e-01 61 2010 7 1.06745e+00 3.48362e-01 25 2010 8 nan nan 0 2010 9 8.45100e-01 2.66119e-01 120 2010 10 7.59532e-01 2.87728e-01 237 2010 11 1.16381e+00 3.63400e-01 121 2010 12 1.63095e+00 5.46468e-01 208 2011 1 1.46250e+00 4.75017e-01 201 2011 2 2.08847e+00 7.37105e-01 157 2011 3 1.85685e+00 7.78178e-01 123 2011 4 1.62689e+00 4.14189e-01 59 2011 5 9.46212e-01 3.69784e-01 69 2011 6 8.36440e-01 2.02463e-01 48 2011 7 1.08282e+00 2.65776e-01 58 2011 8 1.42976e+00 3.06381e-01 77 2011 9 1.70987e+00 9.67529e-01 49 2011 10 8.90581e-01 4.55276e-01 195 2011 11 1.04713e+00 3.42547e-01 130 2011 12 9.23382e-01 2.08928e-01 96 2012 1 1.30444e+00 3.94760e-01 163 2012 2 2.12227e+00 7.97082e-01 33 2012 3 1.24489e+00 8.62724e-01 48 2012 4 9.50704e-01 3.13892e-01 57 2012 5 3.54115e-01 1.56096e-01 35 2012 6 7.81375e-01 5.70645e-02 25 2012 7 7.90781e-01 2.76675e-01 25 2012 8 8.11728e-01 1.98561e-01 26 2012 9 9.19299e-01 3.79598e-01 69 2012 10 1.09397e+00 7.59752e-01 150 2012 11 9.32533e-01 3.50510e-01 215 2012 12 1.36451e+00 9.66218e-01 112 2013 1 1.73064e+00 9.72038e-01 82 2013 2 1.81001e+00 7.18372e-01 103 2013 3 1.64063e+00 8.13355e-01 132 2013 4 1.34745e+00 6.86081e-01 47 2013 5 9.84334e-01 8.52024e-01 18 2013 6 1.76272e+00 8.94180e-02 16 2013 7 nan nan 0 2013 8 1.52256e+00 3.48401e-01 34 2013 9 9.29455e-01 4.37483e-01 78 2013 10 8.31246e-01 4.84625e-01 124 2013 11 1.19705e+00 1.02780e+00 175 2013 12 1.03643e+00 3.49941e-01 96 2014 1 1.30890e+00 3.25747e-01 113 2014 2 1.45198e+00 6.10877e-01 105 2014 3 1.41302e+00 4.21332e-01 96 2014 4 2.86918e+00 5.49605e-01 47 2014 5 2.67396e+00 1.23908e+00 10 2014 6 1.08296e+00 2.79189e-01 27 2014 7 1.22477e+00 2.65118e-01 34 2014 8 8.46049e-01 1.07996e-01 7 2014 9 8.44006e-01 2.63604e-01 60 2014 10 7.22439e-01 3.36233e-01 200 2014 11 1.59192e+00 7.09572e-01 208 2014 12 7.83970e-01 2.71872e-01 129 2015 1 1.24121e+00 7.98611e-01 176 2015 2 1.29361e+00 6.36853e-01 160 2015 3 1.05830e+00 3.20401e-01 49 2015 4 2.35231e+00 3.47867e-01 5 2015 5 6.73020e-01 4.05279e-01 34 2015 6 7.87011e-01 8.61872e-02 16 2015 7 1.14813e+00 1.82242e-01 44 2015 8 7.52587e-01 2.86601e-01 79 2015 9 4.96149e-01 2.19767e-01 66 2015 10 9.63826e-01 4.01625e-01 145 2015 11 1.25697e+00 5.64327e-01 61 2015 12 7.44560e-01 2.86461e-01 62 2016 1 2.46423e+00 1.52577e+00 80 2016 2 3.03335e+00 1.16686e+00 181 2016 3 2.16566e+00 5.06818e-01 108 2016 4 1.84487e+00 9.39544e-01 44 2016 5 9.62160e-01 1.38037e-01 19 2016 6 7.37722e-01 2.19834e-01 55 2016 7 7.64032e-01 2.26976e-01 56 2016 8 1.10121e+00 2.51944e-01 56 2016 9 8.02441e-01 2.96274e-01 75 2016 10 6.12241e-01 4.69682e-01 210 2016 11 1.17682e+00 9.00149e-01 177 2016 12 1.11552e+00 6.76870e-01 95 2017 1 2.79056e+00 1.16123e+00 124 2017 2 1.58048e+00 4.67439e-01 165 2017 3 1.30232e+00 4.57844e-01 110 2017 4 1.46777e+00 5.05007e-01 74 2017 5 1.08386e+00 9.01957e-01 79 2017 6 9.77829e-01 7.92081e-02 21 2017 7 1.78599e+00 1.57376e+00 44 2017 8 1.12692e+00 2.11595e-01 20 2017 9 8.15435e-01 4.22433e-01 96 2017 10 8.81412e-01 4.15059e-01 121 2017 11 7.71422e-01 4.35530e-01 142 2017 12 1.03132e+00 4.76705e-01 143 2018 1 1.97804e+00 9.43336e-01 187 2018 2 1.18740e+00 3.26029e-01 45 2018 3 1.91720e+00 9.89557e-01 84 2018 4 1.15744e+00 2.44722e-01 45 2018 5 5.98231e-01 2.03234e-01 37 2018 6 1.44337e+00 8.19799e-02 16 2018 7 7.50171e-01 3.06209e-01 21 2018 8 6.92828e-01 1.45166e-01 44 2018 9 9.13585e-01 4.55511e-01 99 2018 10 9.35367e-01 4.63797e-01 149 2018 11 1.22299e+00 2.54165e-01 69 2018 12 1.56103e+00 4.38221e-01 71 2019 1 2.84089e+00 9.35502e-01 120 2019 2 1.39320e+00 5.31251e-01 40 2019 3 1.15331e+00 5.07102e-01 61 2019 4 1.63076e+00 4.82301e-01 100 2019 5 1.37418e+00 1.07905e+00 98 2019 6 3.81604e-01 0.00000e+00 1 2019 7 5.20879e-01 4.60731e-02 16 2019 8 8.35263e-01 5.63556e-01 29 2019 9 6.66729e-01 3.75515e-01 113 2019 10 6.70401e-01 2.31293e-01 112 2019 11 1.36460e+00 9.18872e-01 96 2019 12 1.86005e+00 8.28567e-01 76 2020 1 2.24865e+00 1.21824e+00 69 2020 2 1.95767e+00 5.99362e-01 112 2020 3 1.31490e+00 3.60009e-01 80 2020 4 1.29219e+00 5.14793e-01 50 2020 5 1.00978e+00 3.17438e-01 56 2020 6 7.89995e-01 2.19437e-01 42 2020 7 8.53113e-01 1.28925e-01 48 2020 8 7.62589e-01 3.31292e-01 48 2020 9 1.57896e+00 1.18303e+00 22 2020 10 1.88001e+00 1.35831e+00 133 2020 11 9.17660e-01 4.84916e-01 158 2020 12 1.23972e+00 2.96914e-01 160 2021 1 1.40649e+00 6.87701e-01 95 2021 2 1.97293e+00 6.58404e-01 115 2021 3 1.42405e+00 2.80637e-01 93 2021 4 2.22720e+00 7.20862e-01 112 2021 5 1.43425e+00 1.64954e-01 31 2021 6 7.86344e-01 3.20025e-02 6 2021 7 1.25095e+00 2.13429e-01 18 2021 8 5.35868e-01 2.49918e-01 31 2021 9 1.53442e+00 9.17042e-02 30 2021 10 3.53211e+00 1.23850e+00 41 2021 11 8.99250e-01 2.53563e-01 190 2021 12 1.00639e+00 3.26101e-01 64 2022 1 1.34752e+00 3.39497e-01 163 2022 2 1.81422e+00 9.14461e-01 114 2022 3 2.14779e+00 1.60855e+00 147 2022 4 1.55679e+00 4.68727e-01 30 2022 5 1.45394e+00 1.48504e-01 33 2022 6 5.95565e-01 3.66178e-01 45 2022 7 8.40209e-01 2.38122e-01 66 2022 8 8.92001e-01 2.35429e-01 67 2022 9 1.21954e+00 5.44583e-01 170 2022 10 9.40636e-01 4.31959e-01 233 2022 11 8.76969e-01 5.15492e-01 116 2022 12 1.23901e+00 5.97479e-01 112 2023 1 1.35828e+00 5.02154e-01 182 2023 2 1.71695e+00 8.41840e-01 141 2023 3 1.87050e+00 6.64802e-01 32 2023 4 1.09299e+00 3.97682e-01 32 2023 5 6.00456e-01 2.25323e-01 48 2023 6 1.11977e+00 3.11936e-01 42 2023 7 1.08348e+00 3.66383e-01 80 2023 8 8.80245e-01 3.58935e-01 83 2023 9 8.45536e-01 3.19806e-01 44 2023 10 7.81544e-01 6.43122e-01 130 2023 11 1.05431e+00 5.47662e-01 142 2023 12 1.07229e+00 5.73710e-01 80 2024 1 1.26647e+00 3.17888e-01 65 2024 2 1.33559e+00 3.60387e-01 62 2024 3 1.34833e+00 2.75257e-01 29 2024 4 9.97144e-01 0.00000e+00 1