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 6.00369e+01 2.07981e-03 24 2002 8 5.81373e+01 1.88458e-03 3 2002 9 5.62609e+01 9.91087e-04 14 2002 10 4.81490e+01 1.05930e+00 128 2002 11 4.39597e+01 1.91039e+00 381 2002 12 4.00556e+01 2.32616e-01 446 2003 1 4.21630e+01 1.26271e+00 350 2003 2 4.75191e+01 1.19058e+00 146 2003 3 5.40268e+01 1.57096e+00 210 2003 4 5.98068e+01 9.89796e-02 66 2003 5 nan nan 0 2003 6 6.02331e+01 3.63408e-03 57 2003 7 5.97440e+01 0.00000e+00 4 2003 8 nan nan 0 2003 9 5.39683e+01 1.59804e+00 160 2003 10 5.01800e+01 1.74215e+00 386 2003 11 4.37344e+01 2.23059e+00 196 2003 12 4.01187e+01 3.62958e-01 431 2004 1 4.24866e+01 1.06932e+00 568 2004 2 4.86486e+01 2.43501e+00 257 2004 3 5.53599e+01 2.07371e+00 221 2004 4 5.85213e+01 6.76114e-01 199 2004 5 nan nan 0 2004 6 nan nan 0 2004 7 nan nan 0 2004 8 5.75751e+01 2.94064e-01 78 2004 9 5.41567e+01 7.44626e-01 157 2004 10 5.03778e+01 1.54282e+00 250 2004 11 4.22428e+01 1.25736e+00 281 2004 12 4.02143e+01 4.24962e-01 450 2005 1 4.21697e+01 1.06685e+00 216 2005 2 4.81851e+01 1.83329e+00 494 2005 3 5.39782e+01 9.26682e-01 365 2005 4 5.91347e+01 8.48049e-01 160 2005 5 6.02674e+01 6.55264e-02 196 2005 6 nan nan 0 2005 7 nan nan 0 2005 8 nan nan 0 2005 9 5.45089e+01 1.12349e+00 115 2005 10 nan nan 0 2005 11 4.22932e+01 7.54383e-01 436 2005 12 4.03566e+01 3.62913e-01 748 2006 1 4.21123e+01 1.57535e+00 434 2006 2 4.86662e+01 1.83496e+00 396 2006 3 5.35962e+01 1.23391e+00 324 2006 4 5.88124e+01 8.26314e-01 179 2006 5 6.01670e+01 1.53910e-01 227 2006 6 nan nan 0 2006 7 5.97578e+01 1.94377e-01 93 2006 8 5.81915e+01 2.73716e-01 56 2006 9 5.60500e+01 8.59346e-01 132 2006 10 5.02887e+01 1.90329e+00 214 2006 11 4.36127e+01 1.46140e+00 424 2006 12 3.99590e+01 1.57103e-01 418 2007 1 4.23644e+01 1.45631e+00 362 2007 2 4.74181e+01 9.41507e-01 280 2007 3 5.43387e+01 2.12773e+00 32 2007 4 5.81055e+01 4.12788e-01 192 2007 5 nan nan 0 2007 6 nan nan 0 2007 7 nan nan 0 2007 8 nan nan 0 2007 9 5.36820e+01 6.58641e-03 64 2007 10 4.97755e+01 1.48331e+00 138 2007 11 4.27525e+01 1.77518e+00 222 2007 12 4.02696e+01 4.45081e-01 385 2008 1 4.23366e+01 1.54872e+00 722 2008 2 4.71304e+01 1.66724e+00 256 2008 3 5.50206e+01 1.02504e+00 258 2008 4 5.90581e+01 5.42200e-01 57 2008 5 6.03060e+01 2.66034e-02 101 2008 6 6.01719e+01 4.06011e-03 64 2008 7 nan nan 0 2008 8 5.76547e+01 6.08229e-01 154 2008 9 5.55888e+01 6.49811e-03 64 2008 10 4.95912e+01 2.08401e+00 263 2008 11 4.32752e+01 1.90088e+00 386 2008 12 4.02037e+01 3.67891e-01 529 2009 1 4.24726e+01 1.87838e+00 447 2009 2 4.90041e+01 1.74697e+00 328 2009 3 5.39103e+01 1.42461e+00 249 2009 4 5.81011e+01 7.41174e-01 174 2009 5 6.02491e+01 1.39202e-01 74 2009 6 nan nan 0 2009 7 nan nan 0 2009 8 5.81660e+01 1.29610e-02 9 2009 9 5.52077e+01 8.82487e-01 128 2009 10 4.96470e+01 2.42382e+00 147 2009 11 4.36125e+01 1.69237e+00 544 2009 12 4.01076e+01 4.09220e-01 435 2010 1 4.22651e+01 1.67179e+00 413 2010 2 4.80275e+01 1.64496e+00 408 2010 3 5.45074e+01 1.43458e-01 75 2010 4 5.71283e+01 5.74923e-03 62 2010 5 5.98792e+01 1.28123e-03 12 2010 6 6.00687e+01 8.52602e-02 91 2010 7 nan nan 0 2010 8 5.88224e+01 5.06867e-01 65 2010 9 5.49706e+01 1.82359e-03 62 2010 10 5.03676e+01 1.12587e+00 157 2010 11 4.27067e+01 9.55250e-01 349 2010 12 4.04394e+01 4.09457e-01 539 2011 1 4.22983e+01 1.41828e+00 430 2011 2 4.86066e+01 1.92960e+00 288 2011 3 5.38084e+01 1.41460e+00 520 2011 4 5.86850e+01 3.40763e-01 246 2011 5 6.00328e+01 1.84865e-01 189 2011 6 nan nan 0 2011 7 nan nan 0 2011 8 nan nan 0 2011 9 5.48044e+01 1.83190e+00 215 2011 10 4.95292e+01 7.15854e-01 144 2011 11 4.25341e+01 1.00095e+00 422 2011 12 4.03219e+01 4.08497e-01 442 2012 1 4.23099e+01 1.43399e+00 778 2012 2 4.76093e+01 1.45693e+00 350 2012 3 5.42720e+01 1.39103e+00 204 2012 4 5.88268e+01 5.16925e-01 226 2012 5 5.99873e+01 1.48056e-01 208 2012 6 6.02898e+01 4.15671e-02 92 2012 7 nan nan 0 2012 8 5.92368e+01 2.22452e-03 64 2012 9 5.51712e+01 1.29094e+00 175 2012 10 5.03624e+01 2.32906e+00 205 2012 11 4.40012e+01 1.51086e+00 370 2012 12 4.02952e+01 3.80297e-01 382 2013 1 4.16992e+01 9.32829e-01 365 2013 2 4.83964e+01 2.19740e+00 391 2013 3 5.30295e+01 1.05104e+00 185 2013 4 5.92966e+01 2.77472e-01 96 2013 5 6.00096e+01 1.21849e-03 64 2013 6 nan nan 0 2013 7 5.98389e+01 1.26762e-01 116 2013 8 nan nan 0 2013 9 5.41371e+01 6.26545e-01 227 2013 10 5.05880e+01 1.23306e+00 220 2013 11 4.30077e+01 1.45966e+00 308 2013 12 4.02123e+01 3.85579e-01 529 2014 1 4.28986e+01 1.41504e+00 366 2014 2 4.67982e+01 1.01795e+00 227 2014 3 5.40466e+01 1.63462e+00 280 2014 4 5.97441e+01 3.40349e-03 60 2014 5 5.99408e+01 6.57402e-03 64 2014 6 nan nan 0 2014 7 5.92440e+01 0.00000e+00 1 2014 8 nan nan 0 2014 9 5.42345e+01 1.12872e+00 225 2014 10 4.98699e+01 1.11919e+00 271 2014 11 4.33348e+01 1.64456e+00 187 2014 12 4.02759e+01 4.03769e-01 379 2015 1 4.19930e+01 1.36941e+00 470 2015 2 4.67638e+01 1.66811e+00 408 2015 3 5.43079e+01 1.63111e+00 252 2015 4 5.85508e+01 6.73874e-01 58 2015 5 5.99561e+01 7.04430e-03 64 2015 6 nan nan 0 2015 7 5.97518e+01 1.58236e-02 36 2015 8 nan nan 0 2015 9 5.59796e+01 9.74001e-01 240 2015 10 4.92737e+01 1.29141e+00 217 2015 11 4.30062e+01 1.51857e+00 285 2015 12 4.03186e+01 4.07551e-01 276 2016 1 4.12488e+01 9.03452e-01 469 2016 2 4.75109e+01 2.23208e+00 479 2016 3 5.39826e+01 5.45033e-01 127 2016 4 5.87791e+01 2.33227e-01 337 2016 5 6.02947e+01 7.09601e-03 51 2016 6 nan nan 0 2016 7 nan nan 0 2016 8 5.84092e+01 3.91293e-01 128 2016 9 5.45041e+01 6.15854e-01 100 2016 10 4.84796e+01 1.09192e+00 324 2016 11 4.24834e+01 1.33995e+00 276 2016 12 4.01491e+01 2.25136e-01 374 2017 1 4.28708e+01 1.40922e+00 710 2017 2 4.84736e+01 1.76901e+00 428 2017 3 5.52184e+01 1.62653e+00 348 2017 4 5.78703e+01 6.31369e-01 105 2017 5 6.00695e+01 9.56389e-02 134 2017 6 6.02441e+01 7.80430e-02 109 2017 7 nan nan 0 2017 8 5.88487e+01 2.02070e-02 112 2017 9 nan nan 0 2017 10 5.11799e+01 3.66999e-01 96 2017 11 4.23315e+01 1.45771e+00 306 2017 12 4.02268e+01 3.73140e-01 608 2018 1 4.17455e+01 1.88933e+00 328 2018 2 4.98567e+01 1.04121e+00 109 2018 3 5.34484e+01 1.82139e+00 337 2018 4 5.82592e+01 9.34427e-01 229 2018 5 nan nan 0 2018 6 6.03827e+01 1.44381e-02 51 2018 7 5.98760e+01 5.23157e-03 51 2018 8 nan nan 0 2018 9 5.57540e+01 7.55857e-03 53 2018 10 4.89967e+01 1.42924e+00 201 2018 11 4.29894e+01 1.77283e+00 508 2018 12 4.02680e+01 2.94979e-01 430 2019 1 4.22193e+01 1.51353e+00 448 2019 2 4.76724e+01 1.59891e+00 403 2019 3 5.45972e+01 1.69973e+00 241 2019 4 5.85922e+01 9.84286e-01 213 2019 5 nan nan 0 2019 6 6.04586e+01 1.14973e-01 26 2019 7 nan nan 0 2019 8 5.79251e+01 5.41492e-03 61 2019 9 5.59543e+01 1.88442e-01 53 2019 10 5.07848e+01 5.24440e-01 160 2019 11 4.34828e+01 1.74471e+00 665 2019 12 4.02782e+01 5.13860e-01 245 2020 1 4.24329e+01 1.61444e+00 619 2020 2 4.81361e+01 2.28514e+00 376 2020 3 5.40917e+01 1.75853e+00 257 2020 4 5.85692e+01 8.87609e-01 365 2020 5 6.03636e+01 4.72243e-02 173 2020 6 nan nan 0 2020 7 5.97956e+01 3.16693e-03 47 2020 8 5.91007e+01 2.71120e-01 127 2020 9 5.39732e+01 1.07399e+00 333 2020 10 4.98344e+01 9.98101e-01 179 2020 11 4.22680e+01 1.01931e+00 213 2020 12 4.01872e+01 3.57593e-01 439 2021 1 4.24196e+01 1.28307e+00 609 2021 2 4.80386e+01 2.29135e+00 308 2021 3 5.35618e+01 1.27052e+00 383 2021 4 5.88436e+01 2.69696e-03 64 2021 5 5.98409e+01 1.89252e-01 81 2021 6 6.01908e+01 5.91314e-03 64 2021 7 5.94915e+01 2.62952e-03 51 2021 8 nan nan 0 2021 9 5.30474e+01 7.07189e-01 252 2021 10 4.96166e+01 1.87035e+00 358 2021 11 4.34873e+01 1.79074e+00 398 2021 12 3.98794e+01 1.29987e-01 425 2022 1 4.31011e+01 1.17255e+00 564 2022 2 4.80501e+01 2.50575e+00 246 2022 3 5.35283e+01 7.33344e-01 125 2022 4 5.95563e+01 3.73440e-03 64 2022 5 nan nan 0 2022 6 nan nan 0 2022 7 nan nan 0 2022 8 nan nan 0 2022 9 5.61806e+01 4.54470e-01 173 2022 10 5.11141e+01 1.05204e+00 243 2022 11 4.33507e+01 1.58795e+00 622 2022 12 4.01966e+01 4.00608e-01 872 2023 1 4.22170e+01 1.21953e+00 669 2023 2 4.87286e+01 2.41804e+00 335 2023 3 5.42635e+01 1.59096e+00 362 2023 4 5.92951e+01 6.99512e-01 196 2023 5 6.02439e+01 5.64766e-02 159 2023 6 6.01267e+01 1.28606e-01 130 2023 7 nan nan 0 2023 8 5.91632e+01 2.75691e-02 35 2023 9 5.60097e+01 9.13409e-01 194 2023 10 5.05613e+01 1.45028e+00 139 2023 11 4.31761e+01 1.50660e+00 270 2023 12 4.03231e+01 4.56044e-01 722 2024 1 4.19037e+01 1.33918e+00 512 2024 2 4.80959e+01 2.02857e+00 566 2024 3 5.51791e+01 1.21092e+00 247 2024 4 5.73641e+01 9.05259e-02 78