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 1.73449e+00 7.68120e-01 142 2002 8 1.29766e+00 4.30351e-01 363 2002 9 1.19225e+00 3.65672e-01 156 2002 10 1.35577e+00 7.54404e-01 565 2002 11 2.47810e+00 1.37315e+00 533 2002 12 2.98892e+00 1.66223e+00 426 2003 1 4.17289e+00 1.57773e+00 365 2003 2 2.28688e+00 1.18629e+00 362 2003 3 nan nan 0 2003 4 nan nan 0 2003 5 3.61826e+00 7.96255e-01 53 2003 6 2.70592e+00 1.65415e+00 58 2003 7 8.04978e+00 6.74296e-02 3 2003 8 2.83940e+00 1.77084e+00 92 2003 9 3.24416e+00 2.23492e+00 75 2003 10 2.75535e+00 1.04212e+00 324 2003 11 3.05245e+00 1.95571e+00 367 2003 12 2.97326e+00 1.66664e+00 514 2004 1 2.42673e+00 1.42784e+00 737 2004 2 3.61244e+00 1.89779e+00 285 2004 3 3.65807e+00 2.38954e+00 83 2004 4 2.67427e+00 1.58785e+00 287 2004 5 1.65011e+00 8.09496e-01 485 2004 6 1.03699e+00 4.10940e-01 332 2004 7 3.90146e+00 1.96292e+00 87 2004 8 2.99223e+00 1.75138e+00 266 2004 9 nan nan 0 2004 10 nan nan 0 2004 11 7.00140e+00 1.21811e+00 15 2004 12 4.08847e+00 1.58028e+00 128 2005 1 3.90435e+00 1.87277e+00 105 2005 2 2.76200e+00 1.17236e+00 190 2005 3 4.44975e+00 2.50482e+00 114 2005 4 nan nan 0 2005 5 nan nan 0 2005 6 4.08358e+00 1.72247e+00 96 2005 7 7.16060e+00 3.50048e-01 6 2005 8 nan nan 0 2005 9 1.51063e+00 8.58113e-01 130 2005 10 2.83705e+00 1.48274e+00 648 2005 11 2.51841e+00 1.51225e+00 645 2005 12 3.51735e+00 2.03276e+00 531 2006 1 5.19133e+00 2.03501e+00 91 2006 2 6.38367e+00 2.10790e+00 25 2006 3 5.51969e+00 2.10733e+00 152 2006 4 3.70570e+00 2.12041e+00 156 2006 5 2.33677e+00 1.36093e+00 234 2006 6 1.85153e+00 8.70303e-01 177 2006 7 2.94118e+00 1.19221e+00 88 2006 8 1.69935e+00 6.03856e-01 191 2006 9 1.76925e+00 7.16333e-01 654 2006 10 1.88685e+00 1.31321e+00 434 2006 11 1.59312e+00 1.12091e+00 730 2006 12 6.63616e-01 2.35631e-01 448 2007 1 1.33449e+00 5.82687e-01 294 2007 2 2.16755e+00 1.48233e+00 477 2007 3 2.25661e+00 1.53862e+00 869 2007 4 2.24238e+00 1.15467e+00 407 2007 5 2.62999e+00 1.17695e+00 116 2007 6 1.63743e+00 1.04001e+00 257 2007 7 1.79069e+00 1.51247e+00 342 2007 8 2.21653e+00 1.32486e+00 169 2007 9 1.74827e+00 9.95853e-01 323 2007 10 1.79159e+00 8.56650e-01 508 2007 11 3.83859e+00 1.77993e+00 641 2007 12 1.78422e+00 1.16571e+00 693 2008 1 2.20205e+00 1.70246e+00 449 2008 2 2.46067e+00 1.57560e+00 578 2008 3 6.55043e+00 1.56268e+00 27 2008 4 4.12071e+00 2.07626e+00 76 2008 5 3.44419e+00 1.72348e+00 179 2008 6 1.58822e+00 6.32529e-01 312 2008 7 1.45617e+00 4.60913e-01 261 2008 8 2.41361e+00 2.02127e+00 86 2008 9 3.08833e+00 1.97419e+00 82 2008 10 3.66308e+00 1.83611e+00 181 2008 11 3.80149e+00 2.21425e+00 521 2008 12 3.74404e+00 1.76981e+00 622 2009 1 3.33487e+00 1.72716e+00 442 2009 2 2.03659e+00 6.84547e-01 773 2009 3 1.98046e+00 1.42490e+00 520 2009 4 3.48786e+00 6.09737e-01 64 2009 5 4.38645e+00 2.04017e+00 8 2009 6 7.47026e+00 0.00000e+00 2 2009 7 nan nan 0 2009 8 3.45855e+00 2.43006e+00 162 2009 9 3.34989e+00 2.19362e+00 328 2009 10 2.41023e+00 1.71762e+00 498 2009 11 2.10073e+00 1.50243e+00 729 2009 12 4.75134e+00 1.98749e+00 137 2010 1 3.92127e+00 2.22267e+00 440 2010 2 6.70024e+00 1.91460e+00 40 2010 3 6.44835e+00 1.66191e+00 16 2010 4 9.56912e+00 0.00000e+00 2 2010 5 3.29201e+00 1.37605e+00 231 2010 6 2.72211e+00 1.29210e+00 312 2010 7 3.35087e+00 1.86889e+00 139 2010 8 4.35848e+00 2.28044e+00 66 2010 9 2.92916e+00 1.69917e+00 357 2010 10 2.23210e+00 1.47891e+00 1286 2010 11 1.76572e+00 9.53143e-01 964 2010 12 1.16048e+00 7.19141e-01 744 2011 1 1.28236e+00 6.66238e-01 555 2011 2 1.59448e+00 1.05007e+00 786 2011 3 2.51714e+00 1.79507e+00 689 2011 4 2.73955e+00 1.39385e+00 489 2011 5 1.98846e+00 1.20355e+00 441 2011 6 1.82186e+00 1.29795e+00 200 2011 7 1.34779e+00 7.99300e-01 232 2011 8 1.54071e+00 4.23304e-01 109 2011 9 1.24229e+00 4.20634e-01 596 2011 10 1.38133e+00 8.79190e-01 801 2011 11 1.29099e+00 7.78466e-01 885 2011 12 9.84853e-01 4.67229e-01 684 2012 1 1.24193e+00 6.98681e-01 851 2012 2 4.65854e-01 9.88666e-02 88 2012 3 2.21430e+00 1.94614e+00 479 2012 4 3.10356e+00 1.53261e+00 310 2012 5 1.33128e+00 5.42647e-01 256 2012 6 1.63471e+00 2.24161e-01 19 2012 7 nan nan 0 2012 8 nan nan 0 2012 9 nan nan 0 2012 10 nan nan 0 2012 11 1.92804e+00 1.20000e+00 522 2012 12 2.30018e+00 1.48898e+00 319 2013 1 1.50106e+00 7.13482e-01 469 2013 2 1.70776e+00 5.81667e-01 461 2013 3 4.79806e+00 2.16693e+00 63 2013 4 6.79078e+00 1.58689e+00 14 2013 5 nan nan 0 2013 6 3.03387e+00 2.89336e+00 159 2013 7 5.84485e-01 8.97270e-02 64 2013 8 nan nan 0 2013 9 4.66786e-02 1.19126e-02 4 2013 10 3.15329e+00 1.88388e+00 329 2013 11 2.68667e+00 1.72538e+00 180 2013 12 3.12317e+00 1.85074e+00 167 2014 1 3.69862e+00 2.28087e+00 83 2014 2 6.14556e+00 1.88625e+00 58 2014 3 5.53977e+00 2.03453e+00 74 2014 4 nan nan 0 2014 5 nan nan 0 2014 6 7.44341e+00 1.89808e+00 3 2014 7 4.62695e+00 2.04592e+00 127 2014 8 4.13301e+00 1.96752e+00 147 2014 9 2.29924e+00 1.42811e+00 86 2014 10 3.68271e+00 2.90886e+00 55 2014 11 3.22350e+00 1.76582e+00 605 2014 12 2.92108e+00 2.30761e+00 612 2015 1 5.99455e+00 1.41785e+00 56 2015 2 7.26282e+00 2.54222e+00 17 2015 3 6.26838e+00 0.00000e+00 1 2015 4 4.64001e+00 1.78516e+00 37 2015 5 2.18097e+00 1.85218e+00 220 2015 6 1.48515e+00 6.83499e-01 215 2015 7 3.87830e+00 3.75071e+00 101 2015 8 3.43812e+00 2.27866e+00 51 2015 9 4.04495e+00 1.14389e+00 27 2015 10 4.00121e+00 2.47822e+00 284 2015 11 2.58900e+00 1.92904e+00 319 2015 12 2.00536e+00 1.26987e+00 322 2016 1 4.28971e+00 1.90174e+00 274 2016 2 4.34270e+00 2.58998e+00 136 2016 3 5.26461e+00 1.59723e+00 183 2016 4 5.89076e+00 1.83386e+00 13 2016 5 3.98180e+00 2.34685e+00 242 2016 6 2.31665e+00 1.46718e+00 470 2016 7 2.59323e+00 1.70922e+00 650 2016 8 2.30629e+00 1.54057e+00 463 2016 9 4.59449e+00 2.25325e+00 72 2016 10 2.75251e+00 1.26408e+00 402 2016 11 1.29623e+00 6.01067e-01 739 2016 12 1.18037e+00 4.87364e-01 561 2017 1 1.56785e+00 5.23415e-01 363 2017 2 4.50160e+00 2.30887e+00 115 2017 3 3.31051e+00 1.89755e+00 593 2017 4 2.09092e+00 1.25517e+00 606 2017 5 2.19257e+00 1.23610e+00 295 2017 6 1.68634e+00 9.86243e-01 311 2017 7 nan nan 0 2017 8 3.00519e+00 2.12218e+00 139 2017 9 6.48676e+00 2.11569e+00 32 2017 10 4.17303e+00 1.91416e+00 24 2017 11 3.54391e+00 1.79401e+00 475 2017 12 2.37063e+00 1.76543e+00 654 2018 1 2.72522e+00 1.02604e+00 413 2018 2 2.65376e+00 1.99260e+00 517 2018 3 3.08742e+00 1.69010e+00 428 2018 4 2.68684e+00 1.06119e+00 384 2018 5 2.20876e+00 1.33569e+00 314 2018 6 5.11497e+00 0.00000e+00 6 2018 7 7.19455e+00 0.00000e+00 1 2018 8 4.18616e+00 1.92207e+00 25 2018 9 3.77738e+00 2.58870e+00 264 2018 10 4.24985e+00 2.24159e+00 371 2018 11 2.33387e+00 1.68583e+00 199 2018 12 5.66041e+00 2.18340e+00 106 2019 1 nan nan 0 2019 2 3.60274e+00 1.93928e+00 96 2019 3 5.80934e+00 1.74530e+00 86 2019 4 3.93701e+00 1.91446e+00 77 2019 5 2.72893e+00 1.34841e+00 301 2019 6 1.34328e+00 8.67384e-01 152 2019 7 2.39467e+00 1.69305e+00 133 2019 8 6.44466e+00 2.24241e+00 20 2019 9 2.55241e+00 1.19719e+00 142 2019 10 2.38597e+00 1.31382e+00 401 2019 11 1.53141e+00 1.03651e+00 697 2019 12 1.41834e+00 6.39444e-01 159 2020 1 3.40507e+00 1.78831e+00 426 2020 2 3.06227e+00 1.31651e+00 318 2020 3 4.12878e+00 2.46554e+00 147 2020 4 4.42802e+00 1.55520e+00 35 2020 5 4.36385e+00 2.07038e+00 52 2020 6 2.97917e+00 0.00000e+00 2 2020 7 nan nan 0 2020 8 4.55551e+00 1.03642e-01 6 2020 9 2.30040e+00 1.21107e+00 106 2020 10 4.44818e+00 2.34569e+00 125 2020 11 3.52632e+00 2.29341e+00 229 2020 12 3.41594e+00 1.93840e+00 396 2021 1 6.03968e+00 2.19249e+00 47 2021 2 6.43364e+00 2.03792e+00 140 2021 3 nan nan 0 2021 4 7.40098e+00 1.44553e+00 8 2021 5 3.72308e+00 2.33028e+00 152 2021 6 2.07687e+00 1.51520e+00 137 2021 7 nan nan 0 2021 8 7.47937e+00 2.02795e+00 3 2021 9 2.53151e+00 1.35421e+00 72 2021 10 3.64108e+00 2.43669e+00 26 2021 11 3.55869e+00 1.67506e+00 108 2021 12 2.91990e+00 1.88413e+00 459 2022 1 5.10058e+00 1.92298e+00 191 2022 2 3.62812e+00 1.64487e+00 495 2022 3 2.95588e+00 1.71107e+00 406 2022 4 nan nan 0 2022 5 3.50371e+00 1.47658e+00 114 2022 6 4.12074e+00 2.10685e+00 210 2022 7 1.50983e+00 1.13713e+00 268 2022 8 3.48697e+00 2.81172e+00 203 2022 9 4.62829e+00 3.60100e+00 21 2022 10 2.19334e+00 1.47784e+00 521 2022 11 2.16425e+00 1.40221e+00 421 2022 12 1.82564e+00 1.61641e+00 658 2023 1 1.36459e+00 9.03418e-01 715 2023 2 2.29999e+00 2.13495e+00 450 2023 3 3.71888e+00 1.31874e+00 72 2023 4 1.99225e+00 1.70310e+00 269 2023 5 1.66793e+00 6.12145e-01 256 2023 6 3.21145e+00 2.05774e+00 91 2023 7 8.57012e+00 0.00000e+00 2 2023 8 1.20748e+00 1.55768e+00 72 2023 9 2.76618e+00 2.89855e+00 100 2023 10 3.78444e+00 2.42158e+00 350 2023 11 3.02526e+00 1.92806e+00 292 2023 12 6.08016e+00 1.95562e+00 23 2024 1 8.54507e+00 0.00000e+00 4 2024 2 8.30205e+00 1.64805e+00 10 2024 3 6.36258e+00 2.27167e+00 93 2024 4 nan nan 0