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 9.35137e-01 5.62921e-02 24 2002 8 1.16459e+00 2.01674e-01 48 2002 9 1.38030e+00 6.49868e-01 92 2002 10 1.35526e+00 1.62950e-01 96 2002 11 1.42820e+00 2.40608e-01 144 2002 12 1.27939e+00 1.43724e-01 128 2003 1 1.29847e+00 1.93676e-01 112 2003 2 1.09586e+00 1.44439e-01 128 2003 3 2.25840e+00 3.14686e-01 28 2003 4 1.64568e+00 3.23382e-01 98 2003 5 1.41747e+00 1.11440e-01 32 2003 6 1.36694e+00 1.12809e-01 32 2003 7 1.76780e+00 3.86568e-01 48 2003 8 1.59565e+00 1.29165e-01 47 2003 9 1.46402e+00 1.76860e-01 112 2003 10 1.04969e+00 1.92106e-01 152 2003 11 1.08934e+00 1.95676e-01 176 2003 12 1.00692e+00 1.39382e-01 164 2004 1 8.28205e-01 1.29346e-01 131 2004 2 1.38200e+00 2.32559e-01 32 2004 3 1.07244e+00 2.35640e-01 160 2004 4 9.20244e-01 1.80068e-01 136 2004 5 8.42892e-01 9.40786e-02 112 2004 6 7.28665e-01 1.84678e-02 16 2004 7 1.08904e+00 1.08897e-01 60 2004 8 1.04163e+00 1.88209e-01 50 2004 9 1.13422e+00 4.10592e-01 46 2004 10 1.46433e+00 1.91912e-01 78 2004 11 1.17215e+00 2.19272e-01 144 2004 12 1.45054e+00 2.38087e-01 49 2005 1 1.16056e+00 1.60303e-01 136 2005 2 9.45839e-01 1.18052e-01 140 2005 3 1.36203e+00 9.76652e-02 144 2005 4 1.89987e+00 3.90826e-02 16 2005 5 1.22325e+00 1.98920e-01 91 2005 6 1.10180e+00 1.97307e-01 40 2005 7 1.49435e+00 1.59440e-01 74 2005 8 2.02947e+00 5.79725e-02 11 2005 9 9.55410e-01 2.90374e-01 58 2005 10 9.22180e-01 1.47570e-01 255 2005 11 7.73643e-01 1.11224e-01 193 2005 12 1.08893e+00 1.44804e-01 120 2006 1 1.07146e+00 1.60004e-01 74 2006 2 1.11984e+00 1.90129e-01 141 2006 3 1.13301e+00 1.59295e-01 160 2006 4 9.08214e-01 1.46295e-01 127 2006 5 8.60791e-01 1.67348e-01 128 2006 6 6.91785e-01 2.96393e-02 16 2006 7 8.29428e-01 4.64761e-02 32 2006 8 9.31289e-01 1.04588e-01 75 2006 9 1.08544e+00 1.51466e-01 132 2006 10 1.03696e+00 2.72627e-01 203 2006 11 9.26334e-01 2.67769e-01 208 2006 12 1.00093e+00 3.39238e-01 128 2007 1 1.33245e+00 1.71202e-01 78 2007 2 1.38664e+00 2.64719e-01 153 2007 3 1.01483e+00 1.91564e-01 244 2007 4 9.84666e-01 1.61240e-01 157 2007 5 1.07023e+00 2.25287e-01 64 2007 6 1.14734e+00 5.08256e-01 25 2007 7 8.93123e-01 6.58595e-02 94 2007 8 9.55072e-01 4.16133e-02 48 2007 9 1.28352e+00 1.86042e-01 48 2007 10 1.07512e+00 1.97788e-01 126 2007 11 8.77707e-01 1.40405e-01 240 2007 12 7.44041e-01 9.03985e-02 96 2008 1 9.80470e-01 1.51869e-01 112 2008 2 1.22225e+00 2.82118e-01 193 2008 3 1.54098e+00 2.82617e-01 72 2008 4 1.38163e+00 1.78940e-01 85 2008 5 1.00478e+00 1.40574e-01 96 2008 6 9.51289e-01 1.05643e-01 138 2008 7 9.29473e-01 2.76027e-01 47 2008 8 9.75052e-01 7.03537e-02 16 2008 9 1.66733e+00 2.07468e-01 150 2008 10 1.15487e+00 2.29449e-01 256 2008 11 1.02771e+00 2.16050e-01 239 2008 12 1.21630e+00 3.67202e-01 140 2009 1 1.31494e+00 1.68128e-01 127 2009 2 1.05300e+00 1.87494e-01 206 2009 3 1.07104e+00 2.29262e-01 99 2009 4 1.80378e+00 2.86281e-01 24 2009 5 1.19890e+00 1.02502e-01 64 2009 6 1.25494e+00 1.90360e-01 32 2009 7 8.17540e-01 3.84611e-02 22 2009 8 1.32444e+00 3.60241e-01 57 2009 9 1.66453e+00 8.75647e-01 75 2009 10 1.40873e+00 2.15987e-01 179 2009 11 1.52581e+00 2.53845e-01 142 2009 12 1.90197e+00 7.79985e-02 16 2010 1 1.61554e+00 1.64902e-01 11 2010 2 1.51182e+00 1.93761e-01 48 2010 3 1.45034e+00 2.05963e-01 112 2010 4 1.32187e+00 2.94143e-01 129 2010 5 1.09406e+00 8.23654e-02 48 2010 6 1.02656e+00 1.19572e-01 96 2010 7 1.06643e+00 6.54058e-02 49 2010 8 1.46581e+00 5.72567e-02 8 2010 9 1.00477e+00 1.55266e-01 144 2010 10 9.50041e-01 1.14522e-01 310 2010 11 8.60753e-01 1.42329e-01 272 2010 12 8.74934e-01 1.11816e-01 160 2011 1 1.05153e+00 1.24984e-01 174 2011 2 1.17684e+00 1.07709e-01 131 2011 3 1.09486e+00 1.11797e-01 159 2011 4 1.13486e+00 1.22393e-01 128 2011 5 8.70151e-01 5.52986e-02 80 2011 6 9.10771e-01 1.00771e-01 104 2011 7 8.83846e-01 7.12968e-02 48 2011 8 1.05089e+00 1.40949e-01 86 2011 9 9.37737e-01 1.01139e-01 153 2011 10 9.03346e-01 2.26251e-01 182 2011 11 1.01934e+00 3.18000e-01 128 2011 12 8.63368e-01 1.53290e-01 183 2012 1 9.69364e-01 1.84912e-01 187 2012 2 1.21700e+00 1.82497e-01 59 2012 3 1.20983e+00 2.63062e-01 150 2012 4 1.00101e+00 1.60948e-01 189 2012 5 8.36340e-01 1.59023e-01 111 2012 6 9.34948e-01 2.84850e-02 16 2012 7 1.66138e+00 2.47919e-01 76 2012 8 2.14386e+00 3.14165e-01 30 2012 9 1.55844e+00 1.67268e-01 71 2012 10 1.39864e+00 1.53225e-01 176 2012 11 8.78603e-01 1.65780e-01 197 2012 12 7.23519e-01 2.28421e-01 100 2013 1 8.33260e-01 1.56010e-01 88 2013 2 9.73297e-01 2.07806e-01 89 2013 3 1.79560e+00 1.76711e-01 64 2013 4 2.01289e+00 3.52097e-01 29 2013 5 1.21543e+00 1.75889e-01 63 2013 6 9.46416e-01 1.43122e-01 32 2013 7 9.23103e-01 2.36503e-01 22 2013 8 2.39845e+00 1.20399e+00 41 2013 9 1.65024e+00 2.47930e-01 128 2013 10 1.25497e+00 2.13734e-01 168 2013 11 9.81662e-01 1.31767e-01 82 2013 12 1.19986e+00 1.93867e-01 107 2014 1 1.49018e+00 1.54300e-01 69 2014 2 1.24436e+00 1.67438e-01 121 2014 3 1.67665e+00 3.34448e-01 33 2014 4 1.75435e+00 1.29991e-01 48 2014 5 1.55105e+00 2.52763e-01 94 2014 6 9.96813e-01 7.69062e-02 52 2014 7 8.93554e-01 1.15347e-01 57 2014 8 9.26106e-01 1.30251e-01 63 2014 9 1.03610e+00 1.75993e-01 144 2014 10 1.13809e+00 3.02048e-01 272 2014 11 1.09057e+00 2.92361e-01 150 2014 12 1.43742e+00 2.90371e-01 144 2015 1 1.55961e+00 1.45252e-01 95 2015 2 1.62947e+00 4.69101e-01 96 2015 3 1.26057e+00 1.76352e-01 121 2015 4 1.05215e+00 4.07216e-02 25 2015 5 1.33197e+00 3.06535e-01 135 2015 6 1.04353e+00 2.69921e-01 59 2015 7 1.08442e+00 1.51903e-01 44 2015 8 1.28268e+00 2.14353e-01 32 2015 9 1.04965e+00 1.42802e-01 99 2015 10 1.02895e+00 6.84737e-02 145 2015 11 1.37587e+00 3.52224e-01 128 2015 12 1.45324e+00 1.68117e-01 137 2016 1 1.81774e+00 4.11475e-02 12 2016 2 1.56269e+00 1.01963e-01 59 2016 3 1.42200e+00 2.09562e-01 44 2016 4 1.92447e+00 2.54027e-01 39 2016 5 1.07713e+00 1.59532e-01 112 2016 6 9.07770e-01 7.32190e-02 112 2016 7 1.04032e+00 1.43222e-01 160 2016 8 1.40239e+00 2.00159e-01 120 2016 9 1.37670e+00 2.10650e-01 99 2016 10 1.13762e+00 2.68099e-01 272 2016 11 7.10870e-01 1.24797e-01 188 2016 12 9.01960e-01 1.37708e-01 113 2017 1 1.38996e+00 1.67641e-01 27 2017 2 1.48604e+00 2.89357e-01 101 2017 3 1.22082e+00 3.13275e-01 168 2017 4 1.15660e+00 1.95186e-01 100 2017 5 9.59407e-01 1.94083e-01 79 2017 6 1.29136e+00 2.15084e-01 44 2017 7 1.43958e+00 1.75189e-01 53 2017 8 1.12786e+00 2.94535e-01 48 2017 9 1.25356e+00 2.93289e-01 104 2017 10 1.16157e+00 2.94321e-01 193 2017 11 8.29371e-01 1.19990e-01 236 2017 12 8.08373e-01 9.25228e-02 111 2018 1 9.87049e-01 2.12143e-01 201 2018 2 1.29906e+00 4.85950e-01 80 2018 3 1.24279e+00 3.09848e-01 176 2018 4 1.03053e+00 1.09495e-01 135 2018 5 1.00570e+00 1.53026e-01 91 2018 6 1.13801e+00 1.21859e-01 49 2018 7 1.00575e+00 1.39280e-01 78 2018 8 1.17218e+00 5.22924e-02 16 2018 9 1.55629e+00 1.02111e+00 168 2018 10 1.79248e+00 5.25604e-01 241 2018 11 1.39366e+00 2.32427e-01 84 2018 12 1.60908e+00 1.79355e-01 20 2019 1 1.35978e+00 9.83402e-03 11 2019 2 1.74695e+00 7.00352e-02 48 2019 3 1.39024e+00 1.96060e-01 171 2019 4 1.23669e+00 8.30490e-02 73 2019 5 1.07651e+00 1.82967e-01 140 2019 6 1.01059e+00 2.42403e-01 85 2019 7 1.31967e+00 4.91690e-01 70 2019 8 1.14626e+00 3.34250e-01 129 2019 9 1.20985e+00 2.54583e-01 217 2019 10 1.06695e+00 2.27804e-01 144 2019 11 8.92817e-01 2.42865e-01 153 2019 12 1.09605e+00 3.10694e-01 53 2020 1 1.55429e+00 1.26052e-01 48 2020 2 1.34474e+00 1.38856e-01 34 2020 3 1.60542e+00 1.76057e-01 50 2020 4 1.36556e+00 1.56785e-01 34 2020 5 1.16636e+00 2.11103e-01 36 2020 6 1.44377e+00 2.48706e-01 80 2020 7 1.69224e+00 5.53311e-02 16 2020 8 8.77088e-01 4.09115e-02 34 2020 9 1.65060e+00 4.07039e-01 66 2020 10 1.52996e+00 2.10895e-01 112 2020 11 1.18196e+00 2.64187e-01 186 2020 12 1.02621e+00 1.32481e-01 243 2021 1 1.42661e+00 1.49595e-01 71 2021 2 nan nan 0 2021 3 1.55987e+00 2.99425e-01 73 2021 4 1.38563e+00 2.89369e-01 145 2021 5 1.11814e+00 2.33885e-01 92 2021 6 9.26729e-01 1.00038e-01 32 2021 7 1.57374e+00 1.95390e-01 64 2021 8 1.47279e+00 3.98085e-01 90 2021 9 2.01741e+00 3.32190e-01 83 2021 10 1.62281e+00 2.38582e-01 107 2021 11 1.15069e+00 1.73818e-01 210 2021 12 1.04429e+00 1.71451e-01 117 2022 1 1.25586e+00 2.19097e-01 66 2022 2 1.26981e+00 1.53937e-01 76 2022 3 1.33746e+00 2.54453e-01 144 2022 4 1.48430e+00 1.29992e-01 32 2022 5 1.11706e+00 9.41203e-02 44 2022 6 1.08782e+00 3.53433e-01 119 2022 7 1.06816e+00 2.57317e-01 112 2022 8 1.18386e+00 2.30000e-01 74 2022 9 1.76184e+00 4.76164e-01 100 2022 10 1.07346e+00 1.63331e-01 302 2022 11 9.54902e-01 2.35238e-01 147 2022 12 9.80742e-01 2.48487e-01 179 2023 1 9.82342e-01 9.59992e-02 143 2023 2 1.56089e+00 3.67538e-01 81 2023 3 1.30019e+00 1.52334e-01 112 2023 4 1.35052e+00 2.97352e-01 64 2023 5 8.47162e-01 6.91169e-02 48 2023 6 1.19025e+00 1.18318e-01 55 2023 7 1.25109e+00 6.97875e-02 32 2023 8 1.02304e+00 9.49701e-02 57 2023 9 1.50017e+00 5.02658e-01 128 2023 10 1.29385e+00 2.97557e-01 195 2023 11 8.36255e-01 1.32548e-01 120 2023 12 1.63700e+00 3.95415e-01 58 2024 1 1.66642e+00 1.29635e-01 62 2024 2 1.56976e+00 1.85592e-01 43 2024 3 1.33758e+00 6.89753e-02 36 2024 4 nan nan 0