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 5.93140e+01 9.76521e-02 116 2002 8 5.84150e+01 3.93886e-01 80 2002 9 5.61393e+01 8.17426e-01 122 2002 10 4.87040e+01 1.78663e+00 373 2002 11 4.35120e+01 1.69024e+00 831 2002 12 3.98202e+01 2.62078e-01 649 2003 1 4.20827e+01 1.21671e+00 739 2003 2 4.74069e+01 1.64122e+00 584 2003 3 5.39294e+01 1.47008e+00 471 2003 4 5.98457e+01 3.58244e-03 53 2003 5 5.99006e+01 8.97748e-02 64 2003 6 nan nan 0 2003 7 5.92222e+01 4.23862e-03 34 2003 8 5.85475e+01 2.30527e-01 160 2003 9 5.48481e+01 1.40727e+00 194 2003 10 4.99468e+01 2.01163e+00 509 2003 11 4.32240e+01 1.90769e+00 347 2003 12 3.98248e+01 3.82069e-01 596 2004 1 4.19983e+01 1.28409e+00 819 2004 2 4.73332e+01 2.07387e+00 703 2004 3 5.47128e+01 1.92432e+00 419 2004 4 5.89232e+01 6.98090e-01 557 2004 5 5.99805e+01 1.11523e-01 93 2004 6 5.98152e+01 1.66749e-03 62 2004 7 5.91890e+01 3.53599e-03 32 2004 8 5.82243e+01 6.65726e-02 84 2004 9 5.32025e+01 8.67900e-03 63 2004 10 4.95768e+01 1.63744e+00 416 2004 11 4.26643e+01 1.71443e+00 431 2004 12 3.99074e+01 3.91522e-01 634 2005 1 4.21715e+01 1.62700e+00 235 2005 2 4.82202e+01 1.69085e+00 605 2005 3 5.48235e+01 1.38236e+00 521 2005 4 5.97045e+01 2.09850e-01 78 2005 5 6.00475e+01 1.03440e-01 171 2005 6 nan nan 0 2005 7 5.92593e+01 1.42081e-02 83 2005 8 5.75429e+01 3.38446e-01 74 2005 9 5.52112e+01 7.82426e-01 163 2005 10 4.81554e+01 1.37917e+00 307 2005 11 4.41915e+01 1.18982e+00 317 2005 12 3.99304e+01 3.22433e-01 781 2006 1 4.19927e+01 1.22530e+00 332 2006 2 4.87404e+01 1.57560e+00 720 2006 3 5.40114e+01 1.72048e+00 663 2006 4 5.91152e+01 4.26130e-01 192 2006 5 6.03070e+01 3.44378e-03 28 2006 6 5.97840e+01 3.68277e-03 64 2006 7 5.93295e+01 3.35164e-01 134 2006 8 nan nan 0 2006 9 5.42842e+01 7.36008e-01 388 2006 10 4.94668e+01 2.26542e+00 369 2006 11 4.34762e+01 1.59663e+00 768 2006 12 3.97577e+01 3.63908e-01 657 2007 1 4.18240e+01 1.51118e+00 785 2007 2 4.77416e+01 1.79985e+00 789 2007 3 5.27690e+01 1.38564e+00 148 2007 4 5.83936e+01 4.72579e-01 200 2007 5 5.99266e+01 6.45420e-02 71 2007 6 6.01184e+01 9.15422e-03 60 2007 7 5.91952e+01 2.36370e-01 229 2007 8 5.84398e+01 2.64360e-01 75 2007 9 5.44186e+01 4.61449e-01 160 2007 10 4.91105e+01 8.28148e-01 197 2007 11 4.25371e+01 1.39446e+00 191 2007 12 3.97200e+01 2.05246e-01 662 2008 1 4.19189e+01 1.35724e+00 786 2008 2 4.79093e+01 1.61625e+00 562 2008 3 5.36155e+01 2.01719e+00 212 2008 4 5.85458e+01 5.76073e-01 330 2008 5 6.01893e+01 4.77463e-02 163 2008 6 5.98537e+01 9.09133e-02 99 2008 7 5.90596e+01 1.92039e-01 313 2008 8 5.87118e+01 2.59342e-01 182 2008 9 5.46678e+01 1.47936e+00 152 2008 10 4.89131e+01 1.91936e+00 582 2008 11 4.31264e+01 1.55317e+00 897 2008 12 3.97930e+01 1.68033e-01 505 2009 1 4.23279e+01 1.62326e+00 859 2009 2 4.81445e+01 1.91781e+00 368 2009 3 5.50221e+01 1.86579e+00 316 2009 4 5.83704e+01 5.98235e-01 547 2009 5 5.99907e+01 1.18318e-01 188 2009 6 nan nan 0 2009 7 5.94723e+01 2.99764e-01 232 2009 8 5.87437e+01 1.64452e-01 149 2009 9 5.57703e+01 4.83658e-01 286 2009 10 4.87386e+01 1.73795e+00 506 2009 11 4.32162e+01 1.63094e+00 705 2009 12 4.00071e+01 4.16386e-01 533 2010 1 4.20005e+01 1.41627e+00 641 2010 2 4.68638e+01 1.35139e+00 432 2010 3 5.51021e+01 1.55371e+00 477 2010 4 5.75323e+01 2.77715e-01 85 2010 5 5.98622e+01 1.27508e-02 64 2010 6 5.97643e+01 1.18439e-01 161 2010 7 nan nan 0 2010 8 5.78986e+01 5.55550e-01 75 2010 9 5.53880e+01 7.66541e-01 161 2010 10 4.86236e+01 1.20648e+00 571 2010 11 4.19012e+01 7.70942e-01 208 2010 12 4.00703e+01 3.67283e-01 499 2011 1 4.29867e+01 1.02728e+00 665 2011 2 4.78486e+01 1.97953e+00 549 2011 3 5.43977e+01 1.94056e+00 692 2011 4 5.88566e+01 5.75971e-01 363 2011 5 6.01536e+01 2.41649e-01 142 2011 6 5.99198e+01 2.17978e-02 108 2011 7 5.89815e+01 2.00874e-01 88 2011 8 5.79459e+01 8.97147e-01 125 2011 9 5.44187e+01 1.27440e+00 263 2011 10 4.87735e+01 2.08030e+00 559 2011 11 4.28575e+01 1.20719e+00 424 2011 12 4.00790e+01 3.50178e-01 591 2012 1 4.14155e+01 1.04737e+00 507 2012 2 4.82868e+01 1.87035e+00 718 2012 3 5.34678e+01 1.01380e+00 335 2012 4 5.88735e+01 5.08946e-01 185 2012 5 5.99441e+01 2.09258e-02 110 2012 6 5.99598e+01 4.54831e-03 64 2012 7 5.89486e+01 2.51715e-03 64 2012 8 5.86170e+01 4.42409e-03 56 2012 9 5.56248e+01 1.42031e+00 311 2012 10 4.98402e+01 2.55134e+00 160 2012 11 4.37165e+01 1.52815e+00 531 2012 12 3.99525e+01 3.28172e-01 587 2013 1 4.18205e+01 1.46394e+00 454 2013 2 4.82230e+01 2.29424e+00 654 2013 3 5.46165e+01 1.58327e+00 325 2013 4 5.89330e+01 4.41902e-01 337 2013 5 6.01725e+01 1.34255e-02 62 2013 6 nan nan 0 2013 7 5.91588e+01 1.24481e-01 92 2013 8 5.82801e+01 6.23172e-01 128 2013 9 5.40251e+01 1.88431e-01 135 2013 10 4.95496e+01 1.95429e+00 243 2013 11 4.34415e+01 1.30579e+00 625 2013 12 3.96774e+01 1.10477e-01 496 2014 1 4.24728e+01 1.49873e+00 760 2014 2 4.77252e+01 2.01976e+00 694 2014 3 5.47241e+01 1.50868e+00 607 2014 4 5.80677e+01 5.54820e-01 299 2014 5 5.98779e+01 5.41567e-02 77 2014 6 5.97644e+01 2.90648e-03 55 2014 7 5.93916e+01 1.10374e-02 34 2014 8 5.89406e+01 9.32040e-02 64 2014 9 5.57030e+01 4.65591e-01 190 2014 10 4.91834e+01 1.87762e+00 527 2014 11 4.28466e+01 1.51592e+00 665 2014 12 3.97845e+01 2.87339e-01 607 2015 1 4.21602e+01 1.36065e+00 399 2015 2 4.73835e+01 1.93513e+00 476 2015 3 5.46253e+01 1.66990e+00 549 2015 4 5.85223e+01 7.78358e-01 434 2015 5 6.01149e+01 2.59017e-02 103 2015 6 nan nan 0 2015 7 5.89495e+01 3.85678e-03 64 2015 8 5.86386e+01 3.10182e-01 335 2015 9 5.48731e+01 1.49018e+00 321 2015 10 4.87670e+01 1.52801e+00 485 2015 11 4.36223e+01 1.51921e+00 501 2015 12 3.99786e+01 3.79181e-01 449 2016 1 4.11015e+01 8.82425e-01 598 2016 2 4.77532e+01 2.06932e+00 808 2016 3 5.50562e+01 1.28038e+00 178 2016 4 5.85740e+01 4.43212e-01 347 2016 5 6.01358e+01 4.21732e-02 126 2016 6 5.99329e+01 3.76133e-02 126 2016 7 5.94532e+01 2.69650e-03 24 2016 8 5.81892e+01 4.73289e-01 188 2016 9 5.56592e+01 8.15261e-01 288 2016 10 4.92279e+01 1.31167e+00 383 2016 11 4.26065e+01 1.97274e+00 229 2016 12 3.99209e+01 2.83592e-01 428 2017 1 4.19398e+01 1.45656e+00 606 2017 2 4.73318e+01 1.60021e+00 621 2017 3 5.41265e+01 2.01057e+00 476 2017 4 5.79860e+01 9.44889e-01 298 2017 5 5.99921e+01 1.78737e-01 315 2017 6 5.98674e+01 6.32561e-02 218 2017 7 5.89413e+01 1.37679e-01 115 2017 8 5.87628e+01 2.61726e-03 64 2017 9 5.55819e+01 7.51890e-01 100 2017 10 4.94458e+01 1.21810e+00 167 2017 11 4.28262e+01 2.06349e+00 556 2017 12 3.98307e+01 3.97406e-01 515 2018 1 4.27752e+01 1.22137e+00 269 2018 2 4.77632e+01 1.64558e+00 636 2018 3 5.47347e+01 2.02283e+00 247 2018 4 5.82683e+01 8.59428e-01 284 2018 5 6.00809e+01 7.28111e-02 101 2018 6 6.00249e+01 2.17790e-01 128 2018 7 5.90586e+01 1.37556e-01 126 2018 8 5.82874e+01 3.08427e-01 105 2018 9 5.49764e+01 1.34631e+00 397 2018 10 4.77493e+01 8.92530e-01 587 2018 11 4.28969e+01 1.57335e+00 773 2018 12 3.99800e+01 4.17894e-01 871 2019 1 4.19196e+01 1.43463e+00 649 2019 2 4.65660e+01 1.29569e+00 522 2019 3 5.48191e+01 1.66762e+00 711 2019 4 5.87691e+01 8.48457e-01 431 2019 5 6.01069e+01 1.19204e-03 38 2019 6 6.00585e+01 1.40028e-01 169 2019 7 5.90969e+01 4.90476e-02 191 2019 8 5.82269e+01 6.38713e-01 301 2019 9 5.65711e+01 6.24206e-02 64 2019 10 4.84284e+01 1.45819e+00 599 2019 11 4.35651e+01 1.72953e+00 938 2019 12 3.98922e+01 3.60262e-01 687 2020 1 4.22807e+01 1.50955e+00 575 2020 2 4.75503e+01 2.15573e+00 592 2020 3 5.41847e+01 2.33572e+00 252 2020 4 5.86054e+01 7.26520e-01 554 2020 5 5.99952e+01 1.70422e-01 275 2020 6 5.98460e+01 8.36547e-02 275 2020 7 5.91937e+01 2.50678e-01 77 2020 8 5.84267e+01 5.49578e-01 197 2020 9 5.53052e+01 1.10619e+00 171 2020 10 4.94934e+01 9.67387e-01 384 2020 11 4.26241e+01 1.62476e+00 445 2020 12 3.97604e+01 3.02089e-01 891 2021 1 4.21072e+01 1.28048e+00 726 2021 2 4.77319e+01 1.90725e+00 558 2021 3 5.44415e+01 1.70952e+00 642 2021 4 5.91778e+01 4.02653e-01 177 2021 5 6.00065e+01 1.87309e-01 139 2021 6 nan nan 0 2021 7 5.92057e+01 3.32121e-01 121 2021 8 5.88728e+01 2.42886e-01 122 2021 9 5.39885e+01 1.15988e+00 215 2021 10 4.98140e+01 1.84276e+00 245 2021 11 4.33526e+01 1.73366e+00 753 2021 12 3.98206e+01 3.03618e-01 492 2022 1 4.18460e+01 1.47120e+00 1209 2022 2 4.83006e+01 2.16105e+00 667 2022 3 5.40380e+01 1.60505e+00 329 2022 4 5.93218e+01 2.66155e-01 77 2022 5 6.00497e+01 1.47424e-01 248 2022 6 5.98153e+01 4.79292e-02 192 2022 7 5.90617e+01 2.04104e-02 68 2022 8 5.82642e+01 5.06193e-01 35 2022 9 5.50594e+01 1.43620e+00 179 2022 10 5.00974e+01 1.48733e+00 403 2022 11 4.29542e+01 1.37553e+00 741 2022 12 3.98748e+01 3.08783e-01 974 2023 1 4.22742e+01 1.26120e+00 753 2023 2 4.92142e+01 1.70067e+00 401 2023 3 5.44282e+01 1.92409e+00 601 2023 4 5.89542e+01 6.45886e-01 333 2023 5 6.01027e+01 5.68880e-02 106 2023 6 5.98827e+01 6.79776e-02 179 2023 7 nan nan 0 2023 8 5.81132e+01 7.70918e-01 138 2023 9 5.50372e+01 1.30984e+00 334 2023 10 5.05780e+01 6.52183e-01 208 2023 11 4.30618e+01 1.84542e+00 517 2023 12 4.00629e+01 4.13945e-01 627 2024 1 4.16335e+01 1.33848e+00 662 2024 2 4.83888e+01 1.93791e+00 622 2024 3 5.46685e+01 1.31964e+00 340 2024 4 nan nan 0