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 6.05713e+01 9.01830e-01 261 2002 8 5.78822e+01 9.67333e-01 140 2002 9 5.25147e+01 2.43194e+00 243 2002 10 4.43170e+01 2.21922e+00 420 2002 11 3.94235e+01 8.58887e-01 165 2002 12 3.46951e+01 4.91963e-01 77 2003 1 3.64829e+01 1.17420e+00 332 2003 2 4.39260e+01 1.98855e+00 465 2003 3 5.10688e+01 1.51240e+00 567 2003 4 5.72822e+01 1.69406e+00 150 2003 5 6.12374e+01 7.42196e-01 240 2003 6 6.20729e+01 1.51052e-01 18 2003 7 6.02791e+01 7.92586e-01 87 2003 8 5.84352e+01 1.00873e+00 106 2003 9 5.33827e+01 1.33468e+00 182 2003 10 4.72398e+01 3.31983e+00 255 2003 11 3.68770e+01 8.53250e-01 65 2003 12 3.33432e+01 8.72253e-01 184 2004 1 3.64427e+01 1.31894e+00 270 2004 2 4.30223e+01 2.15103e+00 204 2004 3 5.24124e+01 2.52395e+00 327 2004 4 5.86207e+01 9.72272e-01 253 2004 5 6.20572e+01 2.60973e-01 134 2004 6 6.21871e+01 9.27131e-02 168 2004 7 6.10266e+01 5.30358e-01 167 2004 8 5.86039e+01 1.68862e+00 140 2004 9 5.10919e+01 1.83987e+00 86 2004 10 4.40888e+01 2.38400e+00 205 2004 11 3.84960e+01 1.86191e+00 257 2004 12 3.40379e+01 5.51185e-01 118 2005 1 3.71370e+01 1.78456e+00 217 2005 2 4.32358e+01 1.90175e+00 144 2005 3 5.12487e+01 1.74779e+00 327 2005 4 5.77091e+01 1.75583e+00 187 2005 5 6.12135e+01 4.64212e-01 161 2005 6 6.21009e+01 2.37958e-01 79 2005 7 6.04060e+01 7.22781e-01 333 2005 8 5.87342e+01 1.81874e+00 196 2005 9 5.48355e+01 1.32729e+00 224 2005 10 4.54135e+01 2.26387e+00 153 2005 11 3.81143e+01 1.85399e+00 142 2005 12 3.45825e+01 3.82544e-01 994 2006 1 3.49605e+01 8.37220e-01 322 2006 2 4.54872e+01 1.65477e+00 370 2006 3 5.11511e+01 2.47864e+00 482 2006 4 5.69763e+01 1.40678e+00 303 2006 5 6.14847e+01 1.01781e+00 363 2006 6 6.20044e+01 3.39990e-01 434 2006 7 6.11228e+01 4.04333e-01 167 2006 8 5.84626e+01 8.98852e-01 167 2006 9 5.31367e+01 1.32475e+00 203 2006 10 4.44104e+01 2.21481e+00 331 2006 11 3.72923e+01 1.49440e+00 96 2006 12 3.35808e+01 8.29667e-01 67 2007 1 3.51472e+01 1.58929e+00 226 2007 2 4.57170e+01 1.99384e+00 137 2007 3 4.97240e+01 2.11386e+00 283 2007 4 5.81839e+01 1.36927e+00 123 2007 5 6.09214e+01 6.82972e-01 108 2007 6 6.17158e+01 9.10347e-01 78 2007 7 6.10484e+01 5.68703e-01 328 2007 8 5.96950e+01 1.24316e+00 147 2007 9 5.34868e+01 2.45773e+00 103 2007 10 4.37967e+01 3.14239e+00 118 2007 11 3.98372e+01 1.01140e+00 195 2007 12 3.45647e+01 4.72162e-01 182 2008 1 3.69144e+01 1.85239e+00 133 2008 2 4.14543e+01 1.82389e+00 197 2008 3 4.89473e+01 2.07517e+00 160 2008 4 5.63709e+01 2.15296e+00 227 2008 5 6.08484e+01 1.19165e+00 284 2008 6 6.17599e+01 4.34434e-01 238 2008 7 6.02867e+01 5.09014e-01 263 2008 8 5.94379e+01 7.01686e-01 169 2008 9 5.28374e+01 9.73841e-01 59 2008 10 4.67819e+01 2.76250e+00 146 2008 11 3.84382e+01 1.79826e+00 165 2008 12 3.42183e+01 5.44312e-01 222 2009 1 3.65410e+01 1.45448e+00 294 2009 2 4.38646e+01 2.34645e+00 320 2009 3 5.12575e+01 1.76848e+00 144 2009 4 5.82994e+01 1.38741e+00 122 2009 5 6.05622e+01 6.35226e-01 235 2009 6 6.21132e+01 1.36863e-01 178 2009 7 6.09114e+01 2.23550e-01 43 2009 8 5.94202e+01 4.16968e-01 117 2009 9 5.43659e+01 1.66242e+00 177 2009 10 4.85431e+01 1.61181e+00 179 2009 11 3.91071e+01 2.05449e+00 209 2009 12 3.46280e+01 2.88546e-01 106 2010 1 3.54013e+01 1.01191e+00 67 2010 2 4.41736e+01 1.07406e+00 148 2010 3 4.95108e+01 1.58296e-01 90 2010 4 5.70803e+01 1.96708e+00 151 2010 5 6.12210e+01 1.19919e+00 318 2010 6 6.21157e+01 8.44246e-02 256 2010 7 6.14053e+01 5.31555e-01 121 2010 8 5.88290e+01 1.14036e+00 197 2010 9 5.44588e+01 1.08145e+00 190 2010 10 4.57211e+01 3.46875e+00 272 2010 11 3.85482e+01 1.25283e+00 222 2010 12 3.47632e+01 4.00841e-01 178 2011 1 3.66337e+01 2.18152e+00 152 2011 2 4.39579e+01 2.07569e+00 544 2011 3 5.40608e+01 1.36796e+00 345 2011 4 5.76491e+01 1.35667e+00 527 2011 5 6.09620e+01 1.06363e+00 205 2011 6 6.18771e+01 4.17937e-01 165 2011 7 6.12616e+01 2.69314e-01 245 2011 8 6.03830e+01 2.05000e-01 2 2011 9 5.46482e+01 1.32812e+00 149 2011 10 4.92415e+01 1.18793e+00 96 2011 11 3.68475e+01 1.78617e+00 212 2011 12 3.35401e+01 1.28123e+00 214 2012 1 3.66460e+01 1.44793e+00 312 2012 2 4.56133e+01 1.53784e+00 203 2012 3 5.11702e+01 2.43089e+00 258 2012 4 5.70435e+01 9.95275e-01 323 2012 5 6.06415e+01 7.92293e-01 189 2012 6 6.22372e+01 1.88594e-01 111 2012 7 6.15845e+01 6.72415e-01 85 2012 8 5.91047e+01 7.65667e-01 115 2012 9 5.40165e+01 2.36256e+00 444 2012 10 4.55385e+01 2.13436e+00 259 2012 11 3.72592e+01 1.53138e+00 300 2012 12 3.45993e+01 4.32213e-01 113 2013 1 3.67286e+01 1.32002e+00 226 2013 2 4.32990e+01 1.73968e+00 139 2013 3 5.28495e+01 1.97435e+00 180 2013 4 5.79382e+01 6.91653e-01 162 2013 5 6.10000e+01 6.42136e-01 294 2013 6 6.18990e+01 5.34692e-01 155 2013 7 6.07251e+01 5.57554e-01 177 2013 8 5.73595e+01 6.83544e-01 87 2013 9 5.35968e+01 1.46056e+00 112 2013 10 4.50783e+01 2.63099e+00 457 2013 11 3.88944e+01 2.12027e+00 246 2013 12 3.44750e+01 5.97633e-01 111 2014 1 3.78820e+01 1.22705e+00 321 2014 2 4.30140e+01 2.02860e+00 233 2014 3 5.12259e+01 2.29666e+00 452 2014 4 5.85337e+01 1.45974e+00 327 2014 5 6.15761e+01 5.32881e-01 79 2014 6 6.21492e+01 8.90370e-02 278 2014 7 6.10893e+01 3.79696e-01 184 2014 8 5.93446e+01 6.80147e-01 334 2014 9 5.20205e+01 2.49129e+00 19 2014 10 4.48521e+01 1.45297e+00 112 2014 11 3.82752e+01 1.99499e+00 135 2014 12 3.44790e+01 3.24706e-01 168 2015 1 3.77927e+01 1.92904e+00 163 2015 2 4.42198e+01 2.22452e+00 37 2015 3 5.13103e+01 3.40702e+00 305 2015 4 5.78458e+01 1.06769e+00 317 2015 5 6.10526e+01 8.37450e-01 193 2015 6 6.21346e+01 7.59731e-02 60 2015 7 6.10146e+01 7.84831e-01 175 2015 8 5.80975e+01 1.16194e+00 37 2015 9 5.53658e+01 1.21230e+00 140 2015 10 4.48164e+01 2.06211e+00 137 2015 11 3.93524e+01 1.94142e+00 92 2015 12 3.39013e+01 1.29444e+00 40 2016 1 3.44571e+01 1.38092e-02 14 2016 2 4.33345e+01 2.30327e+00 130 2016 3 5.26180e+01 2.58478e+00 141 2016 4 5.85270e+01 1.66487e+00 452 2016 5 6.07751e+01 1.38548e+00 337 2016 6 6.21004e+01 7.90733e-02 248 2016 7 6.13329e+01 4.27221e-01 234 2016 8 5.95274e+01 9.31918e-01 83 2016 9 5.30190e+01 1.97059e+00 406 2016 10 4.63791e+01 2.31709e+00 128 2016 11 3.85499e+01 2.50196e+00 106 2016 12 3.44130e+01 3.29488e-01 44 2017 1 3.67038e+01 2.35890e+00 206 2017 2 4.42177e+01 2.28462e+00 325 2017 3 5.14088e+01 2.98843e+00 330 2017 4 5.75943e+01 1.73716e+00 226 2017 5 6.15657e+01 1.04159e+00 242 2017 6 6.18500e+01 3.92836e-01 115 2017 7 6.11188e+01 7.61549e-01 245 2017 8 5.84103e+01 1.07022e+00 287 2017 9 5.36872e+01 1.81292e+00 379 2017 10 4.45366e+01 1.43095e+00 25 2017 11 3.79062e+01 1.64761e+00 730 2017 12 3.43624e+01 3.47007e-01 980 2018 1 3.59103e+01 7.93801e-01 219 2018 2 4.37420e+01 2.65219e+00 256 2018 3 5.14696e+01 1.91569e+00 205 2018 4 5.78710e+01 1.51223e+00 359 2018 5 6.06400e+01 4.32300e-01 49 2018 6 6.18032e+01 5.70621e-01 190 2018 7 6.08359e+01 9.51003e-01 235 2018 8 5.77734e+01 8.94107e-01 191 2018 9 5.26361e+01 1.05970e+00 106 2018 10 4.44489e+01 3.51597e+00 79 2018 11 3.63415e+01 2.36637e+00 91 2018 12 3.44761e+01 5.96758e-01 241 2019 1 3.54529e+01 1.17440e+00 139 2019 2 4.39156e+01 2.14260e+00 122 2019 3 5.08087e+01 2.02755e+00 309 2019 4 5.84757e+01 1.40320e+00 175 2019 5 6.14108e+01 3.39530e-01 397 2019 6 6.16130e+01 5.51790e-01 361 2019 7 6.01744e+01 1.03907e+00 183 2019 8 5.88274e+01 1.07093e+00 220 2019 9 5.30536e+01 1.32995e+00 87 2019 10 4.31196e+01 1.78360e+00 167 2019 11 3.77829e+01 2.63151e+00 287 2019 12 3.44013e+01 4.05506e-01 151 2020 1 3.55983e+01 2.22762e+00 175 2020 2 4.40485e+01 2.38276e+00 179 2020 3 5.16757e+01 1.94462e+00 406 2020 4 5.75146e+01 8.11807e-01 349 2020 5 6.06015e+01 5.36843e-01 358 2020 6 6.15676e+01 5.31978e-01 327 2020 7 6.09811e+01 1.22506e+00 37 2020 8 5.90430e+01 1.22347e+00 267 2020 9 5.18241e+01 1.77450e+00 328 2020 10 4.58615e+01 1.09264e+00 294 2020 11 3.59808e+01 1.63517e+00 135 2020 12 3.43315e+01 3.28494e-01 272 2021 1 3.79680e+01 1.04097e+00 360 2021 2 4.46239e+01 1.79129e+00 467 2021 3 5.12076e+01 2.06462e+00 215 2021 4 5.80689e+01 1.36570e+00 205 2021 5 6.09609e+01 9.16738e-01 283 2021 6 6.18919e+01 5.46619e-01 131 2021 7 6.11179e+01 8.09956e-01 149 2021 8 5.94813e+01 5.12793e-01 34 2021 9 5.24678e+01 1.38947e+00 313 2021 10 4.39163e+01 2.43179e+00 85 2021 11 3.95670e+01 1.43274e+00 134 2021 12 3.44198e+01 3.38924e-01 126 2022 1 3.67707e+01 1.88444e+00 191 2022 2 4.40946e+01 2.48806e+00 246 2022 3 5.08286e+01 2.82840e+00 218 2022 4 5.96983e+01 6.81337e-01 45 2022 5 6.10501e+01 5.30376e-01 122 2022 6 6.22079e+01 8.17451e-02 153 2022 7 6.17424e+01 3.44588e-01 78 2022 8 5.82878e+01 6.97687e-01 174 2022 9 5.45997e+01 1.77823e+00 209 2022 10 4.66484e+01 3.00675e+00 160 2022 11 3.78602e+01 1.65897e+00 177 2022 12 3.45047e+01 1.97624e-01 188 2023 1 3.67769e+01 1.37590e+00 330 2023 2 4.46746e+01 2.44343e+00 362 2023 3 5.04981e+01 2.51550e+00 393 2023 4 5.89087e+01 8.96600e-01 243 2023 5 6.18194e+01 3.91193e-01 122 2023 6 6.21906e+01 1.12908e-01 230 2023 7 6.16749e+01 4.03512e-01 168 2023 8 5.91625e+01 1.94770e+00 111 2023 9 5.34986e+01 1.14437e+00 90 2023 10 4.42260e+01 1.80254e+00 95 2023 11 3.86817e+01 1.94298e+00 244 2023 12 3.38434e+01 6.71295e-01 188 2024 1 3.83166e+01 8.95952e-01 107 2024 2 4.50714e+01 1.90735e+00 283 2024 3 5.17869e+01 2.20826e+00 396 2024 4 5.56833e+01 3.94054e-01 16