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 3.89573e+00 7.49379e-01 32 2002 8 3.42652e+00 4.82033e-01 112 2002 9 3.47123e+00 1.79142e+00 108 2002 10 3.49712e+00 6.80206e-01 140 2002 11 2.56236e+00 8.59387e-01 216 2002 12 2.41755e+00 8.16079e-01 192 2003 1 1.29739e+00 7.36660e-01 242 2003 2 2.04797e+00 4.70309e-01 170 2003 3 1.67580e+00 5.64343e-01 45 2003 4 -2.69800e-01 1.11339e+00 40 2003 5 2.98453e+00 1.53574e+00 32 2003 6 2.33569e+00 1.41483e+00 34 2003 7 1.99997e+00 2.46365e-01 16 2003 8 2.24139e+00 7.91341e-01 35 2003 9 3.01487e+00 1.07670e+00 105 2003 10 3.06851e+00 7.71367e-01 222 2003 11 2.52806e+00 1.34589e+00 243 2003 12 1.66938e+00 9.30721e-01 256 2004 1 2.19639e+00 5.79695e-01 128 2004 2 2.29765e+00 7.60145e-01 80 2004 3 3.23857e+00 4.08132e-01 99 2004 4 2.77151e+00 9.42102e-01 106 2004 5 3.90135e+00 9.20472e-01 104 2004 6 3.26107e+00 3.47650e-01 66 2004 7 3.56255e+00 7.94155e-01 76 2004 8 3.35600e+00 2.50712e+00 126 2004 9 1.75680e+00 6.33379e-01 60 2004 10 5.50680e-01 9.24450e-01 92 2004 11 5.33152e-01 8.51863e-01 154 2004 12 1.94201e-01 6.28595e-01 115 2005 1 1.19269e+00 1.01915e+00 188 2005 2 2.45282e+00 7.09471e-01 125 2005 3 1.26321e+00 7.11150e-01 162 2005 4 1.29499e+00 1.92736e+00 56 2005 5 nan nan 0 2005 6 2.09882e+00 9.47960e-01 67 2005 7 2.05547e+00 5.10528e-01 65 2005 8 1.27248e+00 1.47210e+00 52 2005 9 3.32573e+00 7.82212e-01 50 2005 10 2.86623e+00 1.87593e+00 252 2005 11 2.83011e+00 5.43122e-01 305 2005 12 1.67749e+00 8.22471e-01 237 2006 1 1.96280e+00 8.07753e-01 230 2006 2 1.16397e+00 7.28146e-01 160 2006 3 2.28249e+00 5.85555e-01 246 2006 4 3.17039e+00 8.32321e-01 110 2006 5 3.21431e+00 4.71153e-01 128 2006 6 3.49145e+00 1.80250e-01 96 2006 7 3.66319e+00 7.42629e-01 69 2006 8 3.32651e+00 5.74180e-01 80 2006 9 3.09820e+00 6.00690e-01 128 2006 10 2.95039e+00 1.12788e+00 208 2006 11 2.32459e+00 6.57798e-01 236 2006 12 3.50182e+00 2.85129e-01 120 2007 1 3.07637e+00 8.16488e-01 144 2007 2 2.81305e+00 6.48462e-01 243 2007 3 3.60808e+00 5.55526e-01 254 2007 4 3.25160e+00 7.02644e-01 186 2007 5 3.62841e+00 1.84496e-01 26 2007 6 3.23400e+00 2.63112e-01 32 2007 7 3.36015e+00 2.72451e-01 92 2007 8 3.19886e+00 2.28581e-01 79 2007 9 3.47177e+00 3.13781e-01 147 2007 10 3.56827e+00 4.73641e-01 162 2007 11 3.52136e+00 5.83541e-01 288 2007 12 2.96672e+00 1.42892e+00 142 2008 1 2.33077e+00 1.11545e+00 208 2008 2 3.11382e+00 7.24288e-01 260 2008 3 2.62518e+00 9.73148e-01 237 2008 4 3.57129e+00 7.02394e-01 157 2008 5 3.37467e+00 7.38037e-01 184 2008 6 3.72158e+00 5.50344e-01 68 2008 7 3.77570e+00 4.31886e-01 80 2008 8 3.26393e+00 2.27023e-01 32 2008 9 3.00187e+00 4.99409e-01 144 2008 10 3.18943e+00 8.03624e-01 223 2008 11 2.39782e+00 7.81526e-01 219 2008 12 1.72568e+00 9.96096e-01 176 2009 1 2.24362e+00 6.88241e-01 187 2009 2 2.41764e+00 5.01569e-01 240 2009 3 3.17049e+00 7.03696e-01 176 2009 4 2.42126e+00 8.97310e-01 155 2009 5 2.40922e+00 8.79221e-01 32 2009 6 3.63447e+00 8.79725e-01 93 2009 7 3.98354e+00 8.27023e-01 52 2009 8 4.01509e+00 1.37976e+00 110 2009 9 3.82540e+00 8.43180e-01 165 2009 10 3.14201e+00 9.03706e-01 196 2009 11 3.58883e+00 6.07913e-01 141 2009 12 1.76069e+00 5.22165e-01 48 2010 1 5.63373e-01 7.53718e-01 172 2010 2 -4.20929e-02 1.11883e+00 98 2010 3 2.00742e-01 8.92072e-01 139 2010 4 1.89726e+00 8.67633e-01 64 2010 5 2.20289e+00 8.01460e-01 34 2010 6 3.95464e+00 1.10354e+00 109 2010 7 4.33416e+00 1.02749e+00 80 2010 8 3.74465e+00 9.35200e-01 49 2010 9 3.64794e+00 1.68484e+00 141 2010 10 3.25167e+00 9.09419e-01 226 2010 11 3.20599e+00 5.49007e-01 215 2010 12 2.56281e+00 8.67047e-01 261 2011 1 2.51573e+00 6.29399e-01 170 2011 2 2.89024e+00 3.40570e-01 176 2011 3 2.96691e+00 5.86652e-01 176 2011 4 2.74405e+00 4.73973e-01 139 2011 5 4.05894e+00 4.78479e-01 125 2011 6 4.41744e+00 7.43266e-01 71 2011 7 3.84279e+00 7.66434e-01 52 2011 8 4.28271e+00 5.97621e-01 96 2011 9 3.71927e+00 4.32585e-01 160 2011 10 3.19988e+00 1.00036e+00 249 2011 11 3.16612e+00 8.37976e-01 240 2011 12 3.20090e+00 5.58330e-01 264 2012 1 2.45417e+00 9.12941e-01 272 2012 2 2.16972e+00 5.60447e-01 48 2012 3 3.62400e+00 8.38321e-01 202 2012 4 3.89654e+00 5.83840e-01 186 2012 5 4.27985e+00 5.02231e-01 108 2012 6 3.56323e+00 1.67310e-01 16 2012 7 5.01729e+00 1.03807e+00 32 2012 8 nan nan 0 2012 9 2.84887e+00 1.64219e+00 94 2012 10 2.18184e+00 1.09370e+00 167 2012 11 2.06556e+00 1.20995e+00 177 2012 12 2.33816e+00 1.13535e+00 128 2013 1 3.21483e+00 1.05636e+00 176 2013 2 3.14003e+00 6.28020e-01 143 2013 3 2.33282e+00 5.73007e-01 140 2013 4 3.40508e+00 8.94633e-01 90 2013 5 4.54406e+00 6.53170e-01 51 2013 6 4.75049e+00 1.81844e+00 82 2013 7 4.56574e+00 1.38647e+00 3 2013 8 -7.44480e-01 5.24496e+00 35 2013 9 2.71085e+00 1.29916e+00 99 2013 10 2.55850e+00 1.55276e+00 145 2013 11 2.85118e+00 6.72379e-01 151 2013 12 2.94953e+00 5.48147e-01 160 2014 1 1.63150e+00 9.95066e-01 128 2014 2 1.91202e+00 8.65587e-01 128 2014 3 1.81720e+00 5.43541e-01 136 2014 4 1.57128e+00 1.00387e+00 32 2014 5 nan nan 0 2014 6 3.64840e+00 1.30382e+00 18 2014 7 2.72863e+00 7.19870e-01 77 2014 8 3.85250e+00 3.44676e-01 87 2014 9 3.64088e+00 4.80764e-01 90 2014 10 3.17254e+00 9.14857e-01 310 2014 11 2.46199e+00 9.01501e-01 243 2014 12 3.29416e+00 6.58276e-01 192 2015 1 2.38270e+00 1.39692e+00 209 2015 2 1.20808e+00 8.66576e-01 192 2015 3 2.59902e+00 9.05612e-01 98 2015 4 1.64795e+00 3.27593e-01 23 2015 5 3.48872e+00 1.08458e+00 59 2015 6 3.72727e+00 9.41489e-01 115 2015 7 3.79150e+00 2.39302e-01 21 2015 8 3.12206e+00 6.07000e-01 63 2015 9 3.59736e+00 1.11280e+00 128 2015 10 3.28184e+00 6.64937e-01 131 2015 11 3.51100e+00 5.96348e-01 191 2015 12 3.69812e+00 8.33111e-01 144 2016 1 1.75311e+00 8.09829e-01 208 2016 2 1.77223e+00 8.63657e-01 320 2016 3 2.12372e+00 4.92627e-01 176 2016 4 2.62350e+00 1.02736e+00 142 2016 5 2.61714e+00 3.53541e-01 41 2016 6 4.15334e+00 8.44034e-01 95 2016 7 3.69862e+00 1.03995e+00 132 2016 8 3.27501e+00 9.40560e-01 176 2016 9 2.58904e+00 9.73992e-01 182 2016 10 2.72242e+00 1.32003e+00 133 2016 11 3.80848e+00 7.28704e-01 163 2016 12 3.39518e+00 6.57536e-01 196 2017 1 2.64379e+00 9.09498e-01 179 2017 2 2.45608e+00 7.65254e-01 274 2017 3 3.19895e+00 5.82370e-01 224 2017 4 3.48943e+00 9.23304e-01 168 2017 5 3.17108e+00 6.39686e-01 93 2017 6 4.11535e+00 3.70360e-01 58 2017 7 4.00671e+00 8.87289e-01 69 2017 8 3.48892e+00 8.17686e-01 112 2017 9 3.77608e+00 6.84455e-01 104 2017 10 2.90849e+00 6.97316e-01 204 2017 11 3.80642e+00 8.07800e-01 244 2017 12 3.26492e+00 1.01224e+00 163 2018 1 2.80055e+00 7.54696e-01 223 2018 2 3.28124e+00 2.63794e-01 105 2018 3 3.26010e+00 7.67366e-01 198 2018 4 3.76738e+00 3.51311e-01 140 2018 5 3.45718e+00 6.78547e-01 99 2018 6 3.34588e+00 7.25954e-01 64 2018 7 3.92351e+00 1.98917e+00 72 2018 8 3.18682e+00 1.93409e+00 88 2018 9 3.09940e+00 1.08265e+00 120 2018 10 2.16181e+00 1.24733e+00 258 2018 11 9.18787e-01 6.39588e-01 64 2018 12 9.35583e-01 9.15302e-01 112 2019 1 -8.17666e-02 8.53715e-01 101 2019 2 2.45909e+00 1.36380e+00 42 2019 3 1.54284e+00 8.50223e-01 108 2019 4 2.56319e+00 3.34571e-01 112 2019 5 3.49725e+00 7.02250e-01 135 2019 6 3.39288e+00 3.44941e-01 62 2019 7 4.59222e+00 7.88282e-01 93 2019 8 5.45829e+00 5.61152e-01 42 2019 9 3.28316e+00 1.09898e+00 63 2019 10 3.54779e+00 6.59975e-01 116 2019 11 3.22944e+00 1.56200e+00 166 2019 12 2.34427e+00 9.50283e-01 121 2020 1 2.94402e+00 2.45579e-01 160 2020 2 2.61490e+00 8.76619e-01 148 2020 3 3.53673e+00 3.75906e-01 144 2020 4 2.74937e+00 6.08174e-01 93 2020 5 3.95296e+00 6.81288e-01 106 2020 6 3.70423e+00 9.63374e-01 101 2020 7 3.49966e+00 1.30065e+00 39 2020 8 3.76016e+00 6.52542e-01 37 2020 9 3.00416e+00 6.61764e-01 64 2020 10 3.35819e+00 1.15417e+00 111 2020 11 3.17160e+00 7.05012e-01 164 2020 12 2.14705e+00 5.22033e-01 175 2021 1 1.85448e+00 9.50590e-01 97 2021 2 2.42922e+00 6.37297e-01 95 2021 3 2.59768e+00 1.35095e+00 80 2021 4 3.21573e+00 4.70115e-01 84 2021 5 4.41820e+00 1.33755e+00 120 2021 6 3.90388e+00 3.57426e-01 38 2021 7 4.64028e+00 1.49868e-01 9 2021 8 4.66834e-01 7.46692e-01 22 2021 9 1.54529e+00 1.05128e+00 108 2021 10 1.39531e+00 8.36323e-01 122 2021 11 1.93780e+00 5.87659e-01 80 2021 12 2.82415e+00 3.05072e-01 100 2022 1 1.66918e+00 8.37022e-01 222 2022 2 3.14107e+00 6.27829e-01 150 2022 3 2.71220e+00 1.18100e+00 171 2022 4 3.29561e+00 2.22566e-01 22 2022 5 4.04867e+00 1.44187e+00 101 2022 6 4.60513e+00 1.01502e+00 97 2022 7 5.56877e+00 1.09161e+00 56 2022 8 4.77691e+00 9.07285e-01 126 2022 9 3.89030e+00 8.40934e-01 107 2022 10 3.61448e+00 9.06290e-01 106 2022 11 3.60163e+00 4.90470e-01 87 2022 12 3.32511e+00 8.07059e-01 183 2023 1 3.05740e+00 6.59680e-01 197 2023 2 3.23143e+00 4.41029e-01 160 2023 3 3.06510e+00 7.81401e-01 158 2023 4 4.17243e+00 3.36469e-01 64 2023 5 4.03635e+00 1.33450e+00 87 2023 6 4.07539e+00 1.09143e+00 56 2023 7 4.18822e+00 2.85389e-01 16 2023 8 2.50642e+00 3.11815e+00 67 2023 9 2.79584e+00 9.30655e-01 84 2023 10 2.74778e+00 1.35856e+00 120 2023 11 2.79805e+00 1.12272e+00 131 2023 12 7.91712e-01 8.66578e-01 64 2024 1 6.94928e-01 5.41949e-01 67 2024 2 5.81198e-01 6.41460e-01 96 2024 3 3.17728e+00 1.32348e+00 95 2024 4 nan nan 0