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 nan nan 0 2002 8 nan nan 0 2002 9 2.78844e+00 5.75010e-01 170 2002 10 2.08931e+00 4.51127e-01 260 2002 11 1.15823e+00 1.93337e-01 470 2002 12 1.95584e+00 3.88241e-01 473 2003 1 1.85881e+00 6.06247e-01 682 2003 2 1.72975e+00 4.84932e-01 295 2003 3 2.32020e+00 5.98561e-01 145 2003 4 nan nan 0 2003 5 nan nan 0 2003 6 nan nan 0 2003 7 nan nan 0 2003 8 3.10115e+00 4.77071e-01 9 2003 9 2.16115e+00 8.30810e-01 45 2003 10 1.62044e+00 3.63941e-01 49 2003 11 1.15895e+00 2.84521e-01 345 2003 12 1.05788e+00 2.35301e-01 324 2004 1 1.28753e+00 4.99072e-01 171 2004 2 2.15956e+00 5.75153e-01 332 2004 3 2.95157e+00 5.63301e-01 253 2004 4 3.80020e+00 7.12311e-01 133 2004 5 nan nan 0 2004 6 2.81556e+00 3.91194e-01 24 2004 7 nan nan 0 2004 8 nan nan 0 2004 9 2.01948e+00 3.93489e-01 65 2004 10 2.22367e+00 9.31824e-01 162 2004 11 8.68485e-01 2.04439e-01 39 2004 12 1.81794e+00 5.04361e-01 468 2005 1 1.30097e+00 2.87868e-01 430 2005 2 1.81779e+00 5.56527e-01 581 2005 3 2.95311e+00 8.48394e-01 437 2005 4 3.40074e+00 8.24803e-02 6 2005 5 nan nan 0 2005 6 2.87478e+00 0.00000e+00 1 2005 7 nan nan 0 2005 8 nan nan 0 2005 9 nan nan 0 2005 10 1.38903e+00 2.99149e-01 280 2005 11 1.87931e+00 5.81250e-01 509 2005 12 1.36155e+00 3.71839e-01 860 2006 1 1.22721e+00 3.19493e-01 314 2006 2 2.28509e+00 3.87446e-01 135 2006 3 3.00236e+00 9.50339e-01 235 2006 4 3.69569e+00 7.63875e-01 150 2006 5 nan nan 0 2006 6 nan nan 0 2006 7 nan nan 0 2006 8 nan nan 0 2006 9 nan nan 0 2006 10 1.31779e+00 2.42081e-01 13 2006 11 1.62974e+00 4.14932e-01 795 2006 12 1.58533e+00 5.17714e-01 686 2007 1 1.46470e+00 5.16406e-01 664 2007 2 2.12075e+00 6.42938e-01 529 2007 3 2.58697e+00 8.20134e-01 250 2007 4 nan nan 0 2007 5 3.32015e+00 4.60511e-01 36 2007 6 nan nan 0 2007 7 nan nan 0 2007 8 2.51567e+00 2.48493e-01 41 2007 9 nan nan 0 2007 10 1.31065e+00 4.13195e-01 209 2007 11 1.23453e+00 2.98794e-01 424 2007 12 1.32690e+00 2.34951e-01 643 2008 1 1.63376e+00 2.53432e-01 281 2008 2 2.01965e+00 4.70909e-01 436 2008 3 2.83979e+00 7.34329e-01 260 2008 4 nan nan 0 2008 5 nan nan 0 2008 6 nan nan 0 2008 7 nan nan 0 2008 8 nan nan 0 2008 9 1.98753e+00 1.64119e-01 8 2008 10 2.11238e+00 1.02663e+00 166 2008 11 1.43643e+00 3.71062e-01 462 2008 12 1.99437e+00 9.08103e-01 912 2009 1 2.06893e+00 7.79694e-01 641 2009 2 2.31328e+00 7.66313e-01 342 2009 3 3.19997e+00 1.00671e+00 149 2009 4 nan nan 0 2009 5 4.11891e+00 2.77779e-01 20 2009 6 nan nan 0 2009 7 nan nan 0 2009 8 2.57604e+00 7.73707e-01 40 2009 9 2.15012e+00 7.06481e-01 224 2009 10 1.70696e+00 4.16189e-01 376 2009 11 1.34371e+00 4.05724e-01 579 2009 12 1.97156e+00 4.45287e-01 581 2010 1 1.34249e+00 4.77222e-01 529 2010 2 1.99735e+00 4.73456e-01 280 2010 3 3.01419e+00 8.22765e-01 167 2010 4 2.49215e+00 1.39867e-01 13 2010 5 3.73308e+00 5.33463e-01 36 2010 6 nan nan 0 2010 7 2.88418e+00 7.59672e-01 38 2010 8 nan nan 0 2010 9 2.56528e+00 4.49203e-01 178 2010 10 1.83267e+00 9.23136e-01 456 2010 11 1.30539e+00 4.09165e-01 806 2010 12 1.93471e+00 3.90476e-01 640 2011 1 2.09342e+00 5.53790e-01 653 2011 2 2.21027e+00 9.13414e-01 231 2011 3 2.51323e+00 5.85597e-01 260 2011 4 4.40245e+00 5.47818e-01 29 2011 5 nan nan 0 2011 6 nan nan 0 2011 7 nan nan 0 2011 8 4.25607e+00 4.46203e-01 57 2011 9 1.91901e+00 2.24466e-01 47 2011 10 1.43134e+00 2.26483e-01 87 2011 11 1.45274e+00 4.40721e-01 420 2011 12 2.08794e+00 7.71848e-01 1089 2012 1 2.47763e+00 7.09402e-01 763 2012 2 2.09539e+00 4.37491e-01 359 2012 3 2.97923e+00 7.39684e-01 476 2012 4 3.62219e+00 4.74322e-01 64 2012 5 2.92658e+00 2.29056e-01 15 2012 6 nan nan 0 2012 7 3.03761e+00 4.29902e-01 25 2012 8 2.62828e+00 2.67468e-01 7 2012 9 2.59365e+00 5.13583e-01 72 2012 10 1.37380e+00 3.25635e-01 368 2012 11 1.45572e+00 4.47797e-01 420 2012 12 1.55127e+00 4.24537e-01 382 2013 1 1.85726e+00 9.93289e-01 526 2013 2 2.64151e+00 9.57593e-01 479 2013 3 3.70775e+00 1.27178e+00 120 2013 4 nan nan 0 2013 5 nan nan 0 2013 6 2.75519e+00 1.50412e-01 25 2013 7 3.69184e+00 3.15501e-01 8 2013 8 nan nan 0 2013 9 2.36257e+00 7.35125e-01 90 2013 10 1.54791e+00 5.82520e-01 290 2013 11 1.97369e+00 3.89738e-01 435 2013 12 1.31688e+00 4.44670e-01 367 2014 1 1.68830e+00 6.50680e-01 500 2014 2 2.50571e+00 7.38919e-01 548 2014 3 2.84785e+00 5.91540e-01 341 2014 4 3.04178e+00 1.66911e-01 8 2014 5 nan nan 0 2014 6 3.40059e+00 5.62664e-01 21 2014 7 3.44191e+00 8.13582e-01 88 2014 8 3.08117e+00 7.88371e-01 99 2014 9 2.18643e+00 6.57554e-01 101 2014 10 1.73919e+00 3.62269e-01 464 2014 11 1.45336e+00 5.34036e-01 542 2014 12 1.77779e+00 5.74702e-01 991 2015 1 2.45761e+00 7.21578e-01 572 2015 2 1.83954e+00 3.13678e-01 199 2015 3 1.96820e+00 4.43848e-01 235 2015 4 3.55014e+00 5.60011e-01 45 2015 5 3.19930e+00 2.87050e-01 9 2015 6 nan nan 0 2015 7 3.54675e+00 0.00000e+00 1 2015 8 3.08136e+00 3.77718e-01 5 2015 9 1.57172e+00 1.39032e-01 53 2015 10 1.34343e+00 2.88842e-01 169 2015 11 1.32321e+00 3.64411e-01 548 2015 12 2.11184e+00 6.89659e-01 757 2016 1 2.12343e+00 8.62997e-01 745 2016 2 2.46208e+00 8.78100e-01 953 2016 3 2.99749e+00 7.04147e-01 239 2016 4 3.51297e+00 4.53029e-01 120 2016 5 2.74975e+00 3.33039e-01 32 2016 6 2.61956e+00 4.88758e-01 40 2016 7 nan nan 0 2016 8 3.51514e+00 6.59028e-01 9 2016 9 2.30384e+00 7.05709e-01 149 2016 10 1.78772e+00 8.46405e-01 531 2016 11 1.43753e+00 4.78556e-01 558 2016 12 1.84602e+00 6.82526e-01 443 2017 1 2.43030e+00 1.06435e+00 488 2017 2 2.71871e+00 8.28733e-01 506 2017 3 2.97161e+00 8.14718e-01 412 2017 4 4.28707e+00 7.03965e-01 132 2017 5 2.75488e+00 5.87817e-02 7 2017 6 2.92409e+00 6.23952e-01 20 2017 7 2.87207e+00 2.52860e-01 3 2017 8 2.30211e+00 4.01364e-01 70 2017 9 2.81923e+00 2.94198e-01 7 2017 10 2.06354e+00 1.02361e+00 378 2017 11 1.21963e+00 3.03561e-01 491 2017 12 1.45419e+00 3.34083e-01 558 2018 1 2.06317e+00 7.37266e-01 914 2018 2 1.53185e+00 4.15356e-01 229 2018 3 2.23602e+00 7.29589e-01 229 2018 4 nan nan 0 2018 5 nan nan 0 2018 6 4.27092e+00 1.24907e+00 3 2018 7 3.17117e+00 9.08063e-02 4 2018 8 3.76625e+00 9.04908e-01 112 2018 9 2.41086e+00 1.09975e+00 204 2018 10 1.09836e+00 1.11783e-01 32 2018 11 1.13880e+00 2.99953e-01 191 2018 12 1.47513e+00 5.37311e-01 496 2019 1 1.41041e+00 4.17180e-01 106 2019 2 2.06690e+00 4.31849e-01 432 2019 3 3.21779e+00 9.67145e-01 535 2019 4 2.97393e+00 6.15251e-01 129 2019 5 4.06529e+00 7.17427e-01 53 2019 6 3.57635e+00 9.24606e-01 70 2019 7 4.24349e+00 4.32248e-01 6 2019 8 3.03539e+00 4.33564e-01 24 2019 9 1.90741e+00 3.47380e-01 145 2019 10 1.82119e+00 5.93330e-01 385 2019 11 1.51782e+00 4.61821e-01 519 2019 12 1.51863e+00 5.19876e-01 458 2020 1 1.79878e+00 6.12283e-01 746 2020 2 2.51036e+00 9.08512e-01 550 2020 3 3.21898e+00 8.27036e-01 280 2020 4 3.83959e+00 6.66392e-01 79 2020 5 3.40008e+00 9.99673e-01 45 2020 6 2.72450e+00 2.64036e-01 44 2020 7 3.08975e+00 3.41959e-01 58 2020 8 2.81526e+00 5.41610e-01 83 2020 9 1.59444e+00 1.61720e-01 76 2020 10 1.46517e+00 4.56065e-01 668 2020 11 1.45359e+00 5.76021e-01 335 2020 12 2.18138e+00 4.04565e-01 565 2021 1 2.32039e+00 6.51178e-01 977 2021 2 1.86919e+00 4.36274e-01 438 2021 3 2.63479e+00 6.82517e-01 198 2021 4 3.14596e+00 4.37990e-01 37 2021 5 4.06631e+00 6.84006e-01 36 2021 6 2.31437e+00 0.00000e+00 2 2021 7 3.45200e+00 5.29093e-01 74 2021 8 2.89973e+00 6.07574e-01 174 2021 9 1.94181e+00 4.24183e-01 137 2021 10 1.74190e+00 8.67426e-01 429 2021 11 1.41964e+00 6.05200e-01 578 2021 12 1.65769e+00 5.23737e-01 560 2022 1 1.78193e+00 6.55853e-01 563 2022 2 2.86417e+00 1.02785e+00 769 2022 3 3.08364e+00 3.78658e-01 107 2022 4 nan nan 0 2022 5 3.52376e+00 1.56317e-01 23 2022 6 3.90606e+00 5.76549e-01 94 2022 7 4.31388e+00 9.94822e-01 75 2022 8 nan nan 0 2022 9 3.68912e+00 1.05969e+00 53 2022 10 1.31786e+00 3.35765e-01 372 2022 11 1.55693e+00 6.39508e-01 430 2022 12 2.32885e+00 1.03567e+00 679 2023 1 1.58547e+00 5.43359e-01 250 2023 2 1.75366e+00 5.75111e-01 437 2023 3 3.28638e+00 9.99397e-01 794 2023 4 3.03780e+00 7.96707e-01 293 2023 5 2.51172e+00 4.56267e-01 183 2023 6 3.01996e+00 3.97978e-01 347 2023 7 2.74835e+00 3.52523e-01 267 2023 8 2.35566e+00 4.12777e-01 161 2023 9 2.24849e+00 5.16189e-01 646 2023 10 1.49606e+00 3.81552e-01 421 2023 11 1.10519e+00 3.14026e-01 516 2023 12 2.03637e+00 7.55168e-01 768 2024 1 2.51494e+00 7.72830e-01 916 2024 2 2.86528e+00 7.98812e-01 954 2024 3 2.71520e+00 6.36383e-01 473 2024 4 4.03460e+00 5.81292e-01 128