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 1.77695e+01 1.25714e+01 166 2002 8 4.05476e+01 1.73394e+01 131 2002 9 2.98377e+01 1.90362e+01 107 2002 10 3.20231e+01 1.10185e+01 631 2002 11 2.28318e+01 1.38124e+01 706 2002 12 1.74781e+01 1.07629e+01 606 2003 1 1.52723e+01 8.71120e+00 943 2003 2 2.10155e+01 1.52580e+01 610 2003 3 nan nan 0 2003 4 6.74554e-13 2.94021e-12 20 2003 5 nan nan 0 2003 6 1.73630e+01 1.43495e+01 69 2003 7 3.04354e+01 7.21842e+00 47 2003 8 2.65089e-04 8.35599e-04 37 2003 9 3.19900e+01 2.19889e+01 136 2003 10 2.23879e+01 2.20294e+01 477 2003 11 2.62434e+01 1.51291e+01 861 2003 12 2.02862e+01 1.17773e+01 858 2004 1 2.07711e+01 1.03463e+01 702 2004 2 1.28045e+01 8.35575e+00 197 2004 3 8.61906e+00 7.25669e+00 261 2004 4 1.40525e+01 9.65684e+00 374 2004 5 1.70729e+01 1.33407e+01 266 2004 6 3.01319e+01 1.65034e+01 207 2004 7 2.51108e+01 1.19764e+01 203 2004 8 2.79436e+01 1.60969e+01 210 2004 9 1.06701e-06 2.61364e-06 7 2004 10 5.95977e-02 4.98853e-02 7 2004 11 8.12411e+00 1.70878e+01 214 2004 12 6.71957e+00 3.60947e+00 359 2005 1 1.17069e+01 1.25759e+01 609 2005 2 1.11729e+01 8.07933e+00 438 2005 3 1.40828e+01 9.08527e+00 482 2005 4 9.21885e+00 1.15787e+01 148 2005 5 nan nan 0 2005 6 8.98812e+00 1.14654e+01 167 2005 7 2.42002e+00 3.12295e+00 6 2005 8 nan nan 0 2005 9 3.17342e+01 2.39479e+01 192 2005 10 2.14493e+01 1.73052e+01 525 2005 11 2.21376e+01 6.50022e+00 703 2005 12 2.10986e+01 1.04096e+01 888 2006 1 1.14364e+01 8.25374e+00 636 2006 2 6.00781e+00 5.33731e+00 687 2006 3 5.24478e+00 4.65769e+00 508 2006 4 1.20700e+01 7.73218e+00 123 2006 5 2.16460e+01 1.58245e+01 301 2006 6 2.83859e+01 2.14489e+01 257 2006 7 2.15525e+01 1.38728e+01 157 2006 8 4.72261e+01 1.13247e+01 168 2006 9 2.69839e+01 1.31316e+01 358 2006 10 3.36398e+01 1.20795e+01 652 2006 11 2.88279e+01 1.32106e+01 772 2006 12 4.21672e+01 8.10948e+00 377 2007 1 2.88441e+01 1.47393e+01 422 2007 2 3.19261e+01 1.32098e+01 698 2007 3 2.55838e+01 1.36686e+01 719 2007 4 2.51886e+01 1.47711e+01 297 2007 5 4.39076e+01 5.28272e+00 72 2007 6 3.21487e+01 1.17077e+01 72 2007 7 2.88637e+01 1.11994e+01 316 2007 8 3.21063e+01 6.49852e+00 320 2007 9 4.25661e+01 1.73885e+01 273 2007 10 4.77916e+01 5.87176e+00 498 2007 11 3.43656e+01 1.19483e+01 940 2007 12 4.43933e+01 1.56294e+01 617 2008 1 3.30627e+01 1.32354e+01 699 2008 2 3.74979e+01 1.06703e+01 947 2008 3 2.30182e+01 1.39177e+01 694 2008 4 2.03196e+01 9.98486e+00 129 2008 5 2.21983e+01 1.45932e+01 274 2008 6 2.53039e+01 9.54699e+00 155 2008 7 2.42884e+01 9.87971e+00 235 2008 8 3.84891e+01 2.46750e+00 64 2008 9 6.15983e+00 1.08741e+01 96 2008 10 2.49281e+01 1.34303e+01 666 2008 11 1.92054e+01 9.69893e+00 859 2008 12 1.91734e+01 1.30124e+01 789 2009 1 2.64410e+01 1.66953e+01 695 2009 2 2.09472e+01 9.85465e+00 908 2009 3 2.75944e+01 9.67011e+00 828 2009 4 1.76489e+01 1.14015e+01 243 2009 5 3.97601e+01 1.41742e+01 108 2009 6 3.55874e+01 1.42122e+01 192 2009 7 3.21451e+01 3.91270e+00 64 2009 8 1.40273e+01 3.54530e+00 26 2009 9 2.84403e+01 1.25399e+01 206 2009 10 2.29099e+01 1.54497e+01 586 2009 11 2.83414e+01 9.93892e+00 568 2009 12 3.05090e+01 1.31353e+01 192 2010 1 1.44031e+01 7.46503e+00 937 2010 2 2.10303e+00 2.95785e+00 415 2010 3 1.95172e+00 2.25158e+00 444 2010 4 1.01024e+01 8.90010e+00 174 2010 5 2.83811e+01 2.16410e+01 220 2010 6 9.84471e+00 6.17905e+00 53 2010 7 2.31486e+01 8.54343e+00 130 2010 8 1.46373e+01 6.99938e+00 72 2010 9 2.75384e+01 1.61593e+01 249 2010 10 1.78260e+01 1.01113e+01 1203 2010 11 2.45328e+01 1.21993e+01 1040 2010 12 2.39789e+01 1.46295e+01 860 2011 1 3.16664e+01 1.54224e+01 621 2011 2 2.48671e+01 1.25301e+01 570 2011 3 2.32868e+01 9.33308e+00 864 2011 4 2.67548e+01 1.10676e+01 443 2011 5 1.89226e+01 1.39862e+01 360 2011 6 2.06897e+01 7.20044e+00 108 2011 7 2.41218e+01 1.12575e+01 154 2011 8 3.35823e+01 1.26872e+01 281 2011 9 3.56063e+01 1.58042e+01 466 2011 10 2.93552e+01 1.53107e+01 825 2011 11 3.29852e+01 1.20741e+01 774 2011 12 4.46091e+01 1.22505e+01 813 2012 1 3.55379e+01 1.32931e+01 904 2012 2 3.37417e+01 1.07996e+01 191 2012 3 3.29713e+01 1.37146e+01 601 2012 4 2.43432e+01 1.39253e+01 508 2012 5 3.28268e+01 1.07534e+01 274 2012 6 1.45720e+01 1.37132e+01 123 2012 7 2.20119e-10 1.04267e-09 47 2012 8 6.58500e-10 1.86244e-09 9 2012 9 2.72541e-02 4.22484e-02 38 2012 10 1.42336e+01 2.18981e+01 326 2012 11 1.35758e+01 7.70703e+00 654 2012 12 1.74386e+01 7.76188e+00 290 2013 1 2.77088e+01 1.41360e+01 536 2013 2 2.52504e+01 6.75819e+00 493 2013 3 1.89930e+01 1.34382e+01 471 2013 4 1.06158e+01 1.04994e+01 319 2013 5 2.17989e+01 1.13749e+01 278 2013 6 4.07366e+01 3.42067e+01 164 2013 7 nan nan 0 2013 8 nan nan 0 2013 9 2.38641e+01 2.75020e+01 85 2013 10 1.75282e+01 1.88853e+01 330 2013 11 3.26396e+01 1.68735e+01 316 2013 12 2.51444e+01 1.13663e+01 641 2014 1 2.74633e+01 1.57162e+01 633 2014 2 1.03831e+01 7.54131e+00 555 2014 3 7.53554e+00 5.46571e+00 360 2014 4 nan nan 0 2014 5 nan nan 0 2014 6 nan nan 0 2014 7 2.65927e+01 1.80829e+01 271 2014 8 7.99324e+00 1.40921e+01 64 2014 9 2.40530e+01 2.02611e+01 186 2014 10 1.43500e+01 1.44322e+01 929 2014 11 2.16374e+01 1.20903e+01 939 2014 12 3.33010e+01 1.30910e+01 538 2015 1 3.74056e+01 1.12315e+01 631 2015 2 2.68607e+01 1.21313e+01 652 2015 3 2.16349e+01 1.43501e+01 340 2015 4 nan nan 0 2015 5 3.43255e+01 1.12952e+01 252 2015 6 2.97303e+01 2.05836e+01 253 2015 7 5.63975e+01 5.99961e+00 88 2015 8 3.00914e+01 6.72022e+00 62 2015 9 5.62959e+00 7.44479e+00 101 2015 10 2.54765e+01 6.87248e+00 461 2015 11 1.58283e+01 1.03049e+01 270 2015 12 2.17124e+01 1.39580e+01 493 2016 1 2.72962e+01 8.04088e+00 528 2016 2 1.71078e+01 1.18965e+01 1146 2016 3 1.37010e+01 8.71951e+00 575 2016 4 1.45595e+01 1.20791e+01 242 2016 5 1.54304e+01 1.12186e+01 187 2016 6 2.39566e+01 1.74548e+01 183 2016 7 2.41043e+01 1.41131e+01 348 2016 8 2.04613e+01 2.05622e+01 244 2016 9 2.48015e+01 1.25856e+01 250 2016 10 2.44943e+01 9.94523e+00 595 2016 11 2.74493e+01 1.49329e+01 819 2016 12 3.17990e+01 1.32523e+01 693 2017 1 2.91356e+01 8.38593e+00 537 2017 2 2.82116e+01 1.09968e+01 858 2017 3 2.95794e+01 1.18077e+01 620 2017 4 2.61538e+01 1.37582e+01 372 2017 5 2.22871e+01 1.64981e+01 263 2017 6 6.11695e+01 2.78739e+01 173 2017 7 5.30248e+01 1.40597e+01 106 2017 8 2.42467e+01 1.52530e+01 260 2017 9 2.24674e+01 1.91365e+01 292 2017 10 1.57570e+01 6.63418e+00 118 2017 11 2.02844e+01 1.30333e+01 700 2017 12 3.05519e+01 9.41929e+00 645 2018 1 2.21137e+01 6.62710e+00 592 2018 2 3.09359e+01 1.28036e+01 405 2018 3 1.80039e+01 1.01543e+01 622 2018 4 8.67115e+00 4.36099e+00 83 2018 5 2.77067e+01 1.84112e+01 343 2018 6 1.89372e+01 7.60757e+00 235 2018 7 2.02339e+01 1.41990e+01 94 2018 8 9.48438e+00 1.37842e+01 91 2018 9 1.48233e+01 1.63524e+01 297 2018 10 1.63020e+01 1.13595e+01 550 2018 11 1.29637e+01 9.38258e+00 211 2018 12 1.10681e+01 9.24628e+00 455 2019 1 3.49480e+00 3.00849e+00 385 2019 2 7.55693e+00 7.57491e+00 136 2019 3 6.88804e+00 3.35797e+00 248 2019 4 7.35470e+00 4.57502e+00 256 2019 5 1.77688e+01 1.57660e+01 138 2019 6 1.18557e+01 1.07659e+01 41 2019 7 2.95844e+01 1.37958e+01 136 2019 8 8.34129e+00 4.91663e+00 73 2019 9 1.34770e+01 1.38614e+01 126 2019 10 2.81778e+01 1.40826e+01 310 2019 11 2.21448e+01 1.51623e+01 483 2019 12 2.77331e+01 1.27888e+01 485 2020 1 2.08940e+01 9.28585e+00 530 2020 2 1.88259e+01 8.76634e+00 480 2020 3 2.00726e+01 1.01801e+01 351 2020 4 2.25504e+01 1.90836e+01 396 2020 5 2.01408e+01 1.25473e+01 299 2020 6 2.74145e+01 8.21229e+00 67 2020 7 2.75613e+01 2.64683e+01 43 2020 8 3.82874e+00 3.06578e+00 28 2020 9 5.06827e+00 3.10923e+00 127 2020 10 7.54758e+01 2.37802e+01 66 2020 11 1.20169e+01 2.23276e+01 254 2020 12 1.76405e+01 1.21344e+01 516 2021 1 1.57263e+01 9.54957e+00 489 2021 2 4.62779e+00 7.45076e+00 358 2021 3 1.44904e+00 7.35531e-01 64 2021 4 9.36013e-01 9.34066e-01 18 2021 5 2.23558e+00 2.00072e+00 68 2021 6 2.42676e+01 1.05054e+01 192 2021 7 5.61329e+01 1.04569e+01 4 2021 8 9.30751e+01 0.00000e+00 1 2021 9 2.82469e+01 2.97577e+01 134 2021 10 1.99428e+01 1.89852e+01 266 2021 11 9.00829e+00 7.15212e+00 232 2021 12 2.36129e+01 2.45357e+01 465 2022 1 1.44589e+01 6.88367e+00 732 2022 2 2.27200e+01 8.15333e+00 700 2022 3 1.91346e+01 1.52665e+01 574 2022 4 1.11721e+01 3.42738e+00 5 2022 5 8.63700e+00 7.78933e+00 175 2022 6 4.45381e+01 1.54774e+01 138 2022 7 3.53330e+01 3.54113e+01 127 2022 8 2.28474e+01 2.26916e+01 279 2022 9 2.92799e+01 8.01219e+00 147 2022 10 1.89990e+01 1.17956e+01 911 2022 11 3.34833e+01 1.17876e+01 363 2022 12 2.61956e+01 1.87550e+01 856 2023 1 3.28625e+01 9.66476e+00 763 2023 2 3.35003e+01 6.88152e+00 490 2023 3 3.00361e+01 1.27108e+01 565 2023 4 3.67115e+01 1.79332e+01 365 2023 5 2.65678e+01 2.10485e+01 320 2023 6 3.91102e+01 1.48755e+01 236 2023 7 3.89908e+01 2.36634e+01 168 2023 8 4.37767e+01 2.96064e+01 119 2023 9 1.70646e+01 1.18148e+01 254 2023 10 3.15628e+01 1.63462e+01 462 2023 11 3.18023e+01 1.63139e+01 342 2023 12 1.59632e+01 1.26722e+01 320 2024 1 8.12319e-01 1.17643e+00 126 2024 2 5.63237e+00 5.29236e+00 470 2024 3 3.21905e+00 1.37579e+00 64 2024 4 nan nan 0