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 3.95067e+00 3.47545e-01 32 2002 8 4.10655e+00 1.21653e+00 26 2002 9 6.41118e+00 6.04362e-01 3 2002 10 3.59446e+00 1.13970e+00 80 2002 11 1.98496e+00 5.15963e-01 152 2002 12 3.17575e+00 7.72176e-01 149 2003 1 2.89102e+00 9.73692e-01 203 2003 2 3.77980e+00 3.22953e-01 131 2003 3 1.45774e+00 3.04432e-01 3 2003 4 2.72703e+00 6.32277e-01 66 2003 5 4.20951e+00 7.96126e-01 44 2003 6 3.54251e+00 6.31712e-01 33 2003 7 2.13235e+00 6.28924e-01 16 2003 8 2.83847e+00 1.66666e-01 8 2003 9 3.84297e+00 1.60502e+00 23 2003 10 4.05499e+00 7.86266e-01 157 2003 11 3.41222e+00 8.20013e-01 176 2003 12 3.35961e+00 4.15256e-01 129 2004 1 3.83687e+00 3.93986e-01 100 2004 2 3.04440e+00 5.92661e-01 80 2004 3 3.32535e+00 4.67481e-01 93 2004 4 3.65882e+00 4.26328e-01 97 2004 5 4.01459e+00 3.50415e-01 87 2004 6 3.96074e+00 1.36687e-01 16 2004 7 3.79454e+00 1.15791e-01 32 2004 8 4.11775e+00 2.41608e-01 80 2004 9 3.89556e+00 9.08710e-01 37 2004 10 2.72889e+00 5.83565e-01 82 2004 11 3.72924e+00 1.02251e+00 99 2004 12 2.89281e+00 3.47019e-01 114 2005 1 3.28795e+00 4.91470e-01 140 2005 2 3.49959e+00 3.95839e-01 80 2005 3 2.96926e+00 4.94933e-01 172 2005 4 1.62532e+00 6.55605e-01 64 2005 5 4.37179e+00 7.13839e-01 34 2005 6 3.82581e+00 1.28630e+00 58 2005 7 3.11443e+00 9.90255e-01 31 2005 8 nan nan 0 2005 9 3.81001e+00 1.18515e+00 29 2005 10 4.01498e+00 1.84545e+00 116 2005 11 3.39692e+00 6.60561e-01 170 2005 12 3.18500e+00 3.75450e-01 104 2006 1 3.13625e+00 4.22880e-01 128 2006 2 3.29079e+00 6.18968e-01 148 2006 3 3.55336e+00 6.89170e-01 154 2006 4 3.95734e+00 3.30886e-01 81 2006 5 3.99545e+00 5.93220e-01 100 2006 6 3.97829e+00 5.47549e-01 56 2006 7 3.81064e+00 5.20180e-01 20 2006 8 4.36948e+00 6.26972e-01 54 2006 9 3.75894e+00 7.92966e-01 80 2006 10 3.96179e+00 6.94380e-01 104 2006 11 3.58359e+00 5.81590e-01 157 2006 12 4.03797e+00 3.48270e-01 86 2007 1 3.09931e+00 7.86674e-01 82 2007 2 3.01434e+00 4.92355e-01 133 2007 3 3.91126e+00 7.60879e-01 218 2007 4 4.18376e+00 4.27438e-01 110 2007 5 4.56773e+00 4.03417e-01 70 2007 6 3.89843e+00 2.20054e-01 38 2007 7 3.49526e+00 4.03052e-01 44 2007 8 3.81979e+00 3.11919e-01 32 2007 9 3.57914e+00 4.72971e-01 26 2007 10 4.38800e+00 1.25230e+00 70 2007 11 3.70537e+00 5.62731e-01 217 2007 12 4.12818e+00 8.22346e-01 78 2008 1 3.30890e+00 9.99016e-01 175 2008 2 3.43438e+00 4.24534e-01 221 2008 3 2.91772e+00 6.94630e-01 122 2008 4 3.51760e+00 6.52817e-01 86 2008 5 3.51605e+00 2.62946e-01 50 2008 6 3.60495e+00 4.78857e-01 77 2008 7 3.58996e+00 3.32801e-01 16 2008 8 nan nan 0 2008 9 2.92911e+00 6.93363e-01 63 2008 10 2.82166e+00 4.42746e-01 146 2008 11 3.38563e+00 4.66693e-01 231 2008 12 3.37830e+00 8.13912e-01 132 2009 1 3.39326e+00 7.84920e-01 161 2009 2 3.58266e+00 4.91478e-01 178 2009 3 3.79948e+00 5.21020e-01 146 2009 4 3.26611e+00 5.54601e-01 11 2009 5 3.45348e+00 5.34246e-01 42 2009 6 3.36450e+00 1.06277e-01 21 2009 7 3.28126e+00 4.07880e-01 16 2009 8 3.98332e+00 5.04986e-01 50 2009 9 3.68447e+00 8.22200e-01 55 2009 10 2.77956e+00 1.39472e+00 108 2009 11 2.62585e+00 3.97851e-01 81 2009 12 2.21299e+00 6.88239e-01 44 2010 1 1.84565e+00 6.82138e-01 128 2010 2 1.95036e+00 4.65752e-01 118 2010 3 2.53599e+00 5.33565e-01 128 2010 4 3.93255e+00 4.78174e-01 89 2010 5 4.15824e+00 6.31519e-01 64 2010 6 4.36698e+00 5.47727e-01 75 2010 7 3.74801e+00 4.60154e-01 45 2010 8 4.18101e+00 6.37093e-01 9 2010 9 4.29536e+00 7.75070e-01 146 2010 10 4.40335e+00 7.67760e-01 250 2010 11 4.46806e+00 8.91644e-01 222 2010 12 3.39190e+00 5.35754e-01 176 2011 1 3.61266e+00 4.51221e-01 166 2011 2 3.26350e+00 5.06251e-01 174 2011 3 3.35465e+00 5.00288e-01 132 2011 4 3.91112e+00 4.90043e-01 95 2011 5 3.85321e+00 3.43793e-01 102 2011 6 3.33353e+00 2.09753e-01 45 2011 7 3.42551e+00 4.61168e-01 32 2011 8 4.14781e+00 6.96374e-01 73 2011 9 4.07222e+00 8.93926e-01 120 2011 10 3.69421e+00 4.39877e-01 229 2011 11 3.64478e+00 4.93633e-01 176 2011 12 3.78684e+00 3.63655e-01 156 2012 1 3.82224e+00 7.98579e-01 203 2012 2 3.72637e+00 1.05805e-01 28 2012 3 4.06669e+00 5.94619e-01 185 2012 4 4.54530e+00 4.82805e-01 115 2012 5 4.21564e+00 5.08420e-01 66 2012 6 3.26817e+00 1.47287e-01 30 2012 7 5.46239e+00 1.66855e-01 11 2012 8 4.90703e+00 1.57564e+00 18 2012 9 4.08005e+00 8.86029e-01 22 2012 10 2.62362e+00 7.36320e-01 94 2012 11 3.44899e+00 5.89970e-01 144 2012 12 3.14581e+00 1.13208e+00 108 2013 1 3.36206e+00 6.24151e-01 106 2013 2 3.25605e+00 5.92142e-01 79 2013 3 1.84588e+00 5.18952e-01 103 2013 4 3.46057e+00 3.14450e-01 48 2013 5 4.94662e+00 5.13169e-01 49 2013 6 4.60694e+00 6.63580e-01 59 2013 7 nan nan 0 2013 8 4.60463e+00 4.21404e+00 36 2013 9 3.61591e+00 8.01473e-01 48 2013 10 3.38238e+00 1.10012e+00 121 2013 11 3.74643e+00 6.48395e-01 109 2013 12 4.01706e+00 8.88092e-01 111 2014 1 2.12653e+00 6.62430e-01 101 2014 2 3.52206e+00 4.74601e-01 135 2014 3 2.66878e+00 5.38699e-01 76 2014 4 3.34823e+00 2.86558e-01 48 2014 5 3.11780e+00 5.13013e-01 32 2014 6 3.57105e+00 6.51971e+00 35 2014 7 4.33122e+00 4.08506e-01 64 2014 8 4.68459e+00 4.97372e-01 48 2014 9 3.57990e+00 5.41938e-01 96 2014 10 3.39097e+00 5.26200e-01 260 2014 11 3.15035e+00 6.93479e-01 185 2014 12 3.60438e+00 7.08294e-01 156 2015 1 2.51905e+00 6.08005e-01 132 2015 2 2.60853e+00 5.69079e-01 132 2015 3 3.47875e+00 4.41395e-01 121 2015 4 3.81234e+00 8.19562e-01 54 2015 5 3.45107e+00 3.21464e-01 73 2015 6 3.77755e+00 4.83923e-01 20 2015 7 3.92503e+00 3.14082e-01 17 2015 8 3.99169e+00 1.20255e+00 37 2015 9 4.04170e+00 1.46722e+00 57 2015 10 3.52092e+00 3.62131e-01 97 2015 11 3.32685e+00 7.46180e-01 65 2015 12 4.72470e+00 1.63020e+00 47 2016 1 1.76729e+00 7.39170e-01 152 2016 2 2.79990e+00 7.09466e-01 241 2016 3 3.20393e+00 5.48701e-01 110 2016 4 2.40158e+00 8.45063e-01 46 2016 5 4.34609e+00 4.16120e-01 34 2016 6 4.83207e+00 5.63089e-01 105 2016 7 4.64843e+00 1.42964e+00 94 2016 8 3.16022e+00 1.05842e+00 43 2016 9 3.37868e+00 1.09409e+00 43 2016 10 3.03950e+00 6.92768e-01 153 2016 11 3.17155e+00 4.59998e-01 154 2016 12 3.89966e+00 6.26344e-01 211 2017 1 3.29625e+00 7.75001e-01 127 2017 2 3.69716e+00 6.52155e-01 238 2017 3 4.13552e+00 6.16887e-01 145 2017 4 3.86082e+00 5.00851e-01 105 2017 5 3.89284e+00 4.41070e-01 67 2017 6 4.77819e+00 2.19841e-01 16 2017 7 nan nan 0 2017 8 4.92370e+00 1.26415e+00 63 2017 9 3.98907e+00 6.69089e-01 59 2017 10 3.32133e+00 1.64224e+00 116 2017 11 3.40838e+00 3.17151e-01 226 2017 12 3.85316e+00 6.65474e-01 93 2018 1 3.90366e+00 4.50361e-01 219 2018 2 4.10591e+00 5.37723e-01 102 2018 3 3.92604e+00 6.11846e-01 171 2018 4 3.94891e+00 2.42729e-01 152 2018 5 4.26320e+00 3.17098e-01 80 2018 6 4.01209e+00 2.71720e-01 40 2018 7 4.43040e+00 1.44772e+00 74 2018 8 4.54084e+00 4.16594e-01 16 2018 9 3.91141e+00 8.87221e-01 43 2018 10 2.88773e+00 8.81393e-01 183 2018 11 3.08719e+00 4.24426e-01 80 2018 12 2.06245e+00 8.40231e-01 120 2019 1 1.84809e+00 5.18898e-01 162 2019 2 2.81286e+00 3.48353e-01 48 2019 3 3.11442e+00 6.21191e-01 106 2019 4 2.91927e+00 4.64438e-01 88 2019 5 4.26843e+00 7.55337e-01 111 2019 6 4.80285e+00 7.41585e-01 37 2019 7 4.60862e+00 5.79003e-01 26 2019 8 3.54950e+00 3.76743e-01 46 2019 9 3.11870e+00 3.38305e-01 96 2019 10 3.68955e+00 6.08853e-01 80 2019 11 3.79156e+00 6.00403e-01 162 2019 12 2.78451e+00 8.49223e-01 49 2020 1 3.46712e+00 7.98186e-01 84 2020 2 2.62120e+00 5.15018e-01 130 2020 3 2.62459e+00 4.98552e-01 106 2020 4 3.72866e+00 3.93107e-01 85 2020 5 3.76837e+00 7.53326e-01 93 2020 6 4.37307e+00 3.82611e-01 34 2020 7 4.13171e+00 1.93878e-01 15 2020 8 4.77112e+00 6.47234e-01 64 2020 9 7.84089e-01 2.18516e-01 16 2020 10 2.74400e+00 4.56683e-01 70 2020 11 2.76807e+00 3.35122e-01 155 2020 12 2.89093e+00 4.74173e-01 154 2021 1 2.65514e+00 3.72307e-01 112 2021 2 2.36922e+00 7.07608e-01 103 2021 3 2.68187e+00 5.89571e-01 101 2021 4 3.24756e+00 3.23468e-01 89 2021 5 3.47334e+00 3.79940e-01 74 2021 6 5.75560e+00 2.59923e-01 10 2021 7 3.40858e+00 1.90344e-01 32 2021 8 3.80965e+00 7.41379e-01 48 2021 9 5.44337e+00 2.55869e+00 25 2021 10 3.02411e+00 4.21672e-01 47 2021 11 3.17524e+00 7.99307e-01 132 2021 12 3.34105e+00 1.48550e+00 102 2022 1 2.83958e+00 6.71145e-01 213 2022 2 3.32175e+00 2.18699e-01 88 2022 3 2.83515e+00 8.93868e-01 169 2022 4 3.45671e+00 4.68758e-01 30 2022 5 3.32826e+00 3.11919e-01 32 2022 6 3.47133e+00 4.04769e-01 40 2022 7 4.16562e+00 5.30143e-01 65 2022 8 4.01378e+00 8.19389e-01 92 2022 9 2.86466e+00 5.92070e-01 56 2022 10 3.39207e+00 6.18558e-01 192 2022 11 4.16416e+00 9.27940e-01 99 2022 12 3.43958e+00 8.09585e-01 194 2023 1 3.68488e+00 7.01903e-01 232 2023 2 3.34071e+00 7.50336e-01 197 2023 3 4.23386e+00 8.88948e-01 126 2023 4 3.95228e+00 7.94123e-01 56 2023 5 4.24744e+00 7.40200e-01 53 2023 6 4.00569e+00 3.09355e-01 33 2023 7 3.60616e+00 4.93507e-01 60 2023 8 5.33237e+00 3.21344e+00 37 2023 9 3.11465e+00 7.57320e-01 104 2023 10 2.96519e+00 1.05331e+00 135 2023 11 3.43641e+00 5.64761e-01 124 2023 12 2.92639e+00 7.01123e-01 50 2024 1 3.63103e+00 1.10288e+00 64 2024 2 2.98949e+00 4.49721e-01 148 2024 3 3.04826e+00 5.65892e-01 96 2024 4 nan nan 0