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 3.02383e+00 2.37508e+00 23 2002 8 3.57024e+00 3.44315e+00 171 2002 9 2.93513e+00 1.37606e+00 123 2002 10 3.14751e+00 1.64504e+00 321 2002 11 6.40293e+00 4.62921e+00 547 2002 12 5.74048e+00 2.54372e+00 292 2003 1 7.32725e+00 2.92190e+00 559 2003 2 5.62887e+00 5.26827e+00 448 2003 3 1.13848e+01 6.26730e+00 15 2003 4 1.16088e+01 6.56496e+00 27 2003 5 nan nan 0 2003 6 1.06861e+01 0.00000e+00 1 2003 7 9.89754e+00 6.16535e+00 14 2003 8 7.48602e+00 1.10438e+01 14 2003 9 5.61922e+00 3.27582e+00 133 2003 10 4.78539e+00 2.74039e+00 371 2003 11 4.42250e+00 2.55495e+00 560 2003 12 1.00398e+01 6.87582e+00 672 2004 1 4.67736e+00 2.43939e+00 386 2004 2 4.08103e+00 2.03727e+00 210 2004 3 6.61346e+00 6.76882e+00 307 2004 4 1.96738e+01 1.25550e+01 110 2004 5 2.01296e+00 4.85818e-01 54 2004 6 3.71498e+00 3.67230e+00 130 2004 7 3.93128e+00 2.83862e+00 142 2004 8 2.24340e+00 9.46811e-01 67 2004 9 1.67262e+00 5.28550e-01 13 2004 10 6.71358e+00 4.40856e+00 110 2004 11 1.08474e+01 6.63094e+00 262 2004 12 1.04042e+01 4.73159e+00 296 2005 1 7.77198e+00 4.33760e+00 294 2005 2 8.21852e+00 5.95005e+00 286 2005 3 8.53838e+00 8.95873e+00 368 2005 4 1.17160e+01 3.76125e+00 117 2005 5 2.28513e+00 8.06229e-01 8 2005 6 1.15836e+01 8.16677e+00 150 2005 7 8.24527e+00 7.22148e+00 71 2005 8 nan nan 0 2005 9 6.87338e+00 4.91154e+00 155 2005 10 8.97901e+00 6.11336e+00 357 2005 11 6.58313e+00 5.60814e+00 467 2005 12 6.41360e+00 3.44421e+00 344 2006 1 7.88656e+00 5.00320e+00 410 2006 2 1.20998e+01 5.86661e+00 366 2006 3 7.45410e+00 4.31498e+00 672 2006 4 5.00051e+00 9.25489e-01 64 2006 5 5.49167e+00 4.90936e+00 24 2006 6 1.78713e+00 6.33158e-01 37 2006 7 3.74453e+00 6.25770e-01 12 2006 8 5.11717e-01 9.09745e-01 13 2006 9 5.93126e+00 4.56108e+00 241 2006 10 4.18668e+00 2.63821e+00 391 2006 11 4.87927e+00 3.50806e+00 468 2006 12 4.55701e+00 5.23886e+00 405 2007 1 3.04145e+00 1.49124e+00 288 2007 2 3.60190e+00 1.34404e+00 622 2007 3 2.87995e+00 1.28122e+00 488 2007 4 3.64616e+00 1.47181e+00 249 2007 5 2.00277e+00 5.09967e-01 21 2007 6 4.05796e+00 8.56153e-01 87 2007 7 7.25312e+00 3.72728e+00 49 2007 8 3.05432e+00 2.82980e+00 28 2007 9 4.87391e+00 2.29956e+00 54 2007 10 2.48038e+00 2.93447e+00 348 2007 11 2.59841e+00 1.49074e+00 549 2007 12 4.42774e+00 5.84806e+00 338 2008 1 3.52498e+00 2.15634e+00 308 2008 2 2.81532e+00 2.08034e+00 757 2008 3 3.90522e+00 2.77832e+00 436 2008 4 3.90184e+00 2.61613e+00 316 2008 5 3.61517e+00 1.01266e+00 142 2008 6 3.75768e+00 1.49505e+00 30 2008 7 5.82997e+00 0.00000e+00 1 2008 8 6.30342e+00 2.78240e+00 56 2008 9 6.08579e+00 6.58987e+00 77 2008 10 4.97110e+00 3.52570e+00 382 2008 11 4.89232e+00 3.21688e+00 396 2008 12 3.89921e+00 1.97894e+00 512 2009 1 5.31875e+00 3.39302e+00 398 2009 2 5.44859e+00 3.92378e+00 560 2009 3 4.27383e+00 3.00108e+00 416 2009 4 4.21021e+00 1.45435e+00 192 2009 5 4.48787e+00 1.67988e+00 83 2009 6 3.85360e+00 9.11493e+00 9 2009 7 3.69175e+00 1.51185e+00 48 2009 8 7.74815e+00 3.71296e+00 69 2009 9 5.29913e+00 3.41237e+00 81 2009 10 5.93726e+00 4.04604e+00 347 2009 11 4.30785e+00 4.58726e+00 285 2009 12 2.45856e+00 6.86326e-01 163 2010 1 7.82556e+00 4.35910e+00 546 2010 2 1.63544e+01 1.13799e+01 166 2010 3 2.69106e+01 1.02529e+01 100 2010 4 9.11992e+00 3.55368e+00 134 2010 5 4.39528e+00 3.09009e+00 142 2010 6 6.52733e+00 2.53870e+00 65 2010 7 6.21241e+00 3.28565e+00 58 2010 8 nan nan 0 2010 9 4.15473e+00 4.06426e+00 83 2010 10 4.67000e+00 2.44203e+00 454 2010 11 4.13994e+00 4.84560e+00 648 2010 12 4.77218e+00 3.37321e+00 484 2011 1 3.49437e+00 1.43828e+00 428 2011 2 3.28686e+00 1.75031e+00 306 2011 3 3.52525e+00 1.48437e+00 555 2011 4 3.18468e+00 1.19981e+00 330 2011 5 4.81283e+00 2.44416e+00 62 2011 6 4.21130e+00 1.48161e+00 16 2011 7 2.49444e+00 9.89336e-01 34 2011 8 3.40789e+00 2.02629e+00 23 2011 9 2.84135e+00 4.07034e+00 160 2011 10 3.39824e+00 2.54957e+00 486 2011 11 2.80409e+00 1.29551e+00 467 2011 12 3.49667e+00 3.27189e+00 557 2012 1 3.42818e+00 1.37475e+00 636 2012 2 3.89078e+00 2.80311e+00 182 2012 3 2.79671e+00 1.74922e+00 581 2012 4 3.08413e+00 1.53459e+00 223 2012 5 1.89369e+00 3.70525e-01 126 2012 6 7.60258e+00 1.38337e+01 32 2012 7 9.79928e+00 4.13878e+00 31 2012 8 nan nan 0 2012 9 2.03980e+01 1.21126e+01 45 2012 10 1.21488e+01 6.65446e+00 208 2012 11 1.44624e+01 9.70430e+00 371 2012 12 5.30054e+00 2.68304e+00 170 2013 1 4.19574e+00 3.18609e+00 377 2013 2 6.05670e+00 4.87509e+00 318 2013 3 9.87428e+00 6.72864e+00 375 2013 4 3.82404e+00 2.55323e+00 168 2013 5 2.92307e+00 2.28319e+00 99 2013 6 4.66725e+00 2.24230e+00 64 2013 7 nan nan 0 2013 8 nan nan 0 2013 9 1.28937e+01 8.27868e+00 42 2013 10 8.73431e+00 5.62852e+00 230 2013 11 5.71828e+00 5.10346e+00 196 2013 12 2.87571e+00 1.55611e+00 527 2014 1 4.54565e+00 2.29310e+00 329 2014 2 5.15063e+00 2.73802e+00 474 2014 3 1.07569e+01 7.73019e+00 463 2014 4 1.23336e+01 1.08188e+01 79 2014 5 nan nan 0 2014 6 4.42576e+00 2.00494e+00 45 2014 7 9.90521e+00 6.55743e+00 62 2014 8 5.35673e+00 2.86229e+00 19 2014 9 2.74255e+00 2.49840e+00 85 2014 10 4.44613e+00 3.54147e+00 666 2014 11 4.79305e+00 3.01685e+00 597 2014 12 3.30749e+00 2.04191e+00 396 2015 1 4.80931e+00 5.78691e+00 482 2015 2 7.47767e+00 6.43377e+00 463 2015 3 4.77318e+00 1.86133e+00 241 2015 4 5.06432e+00 6.42827e+00 79 2015 5 2.46398e+00 1.41616e+00 104 2015 6 6.48534e+00 6.19551e+00 149 2015 7 nan nan 0 2015 8 1.41263e+01 1.10277e+01 64 2015 9 5.38909e+00 6.11565e-01 15 2015 10 4.91965e+00 2.77857e+00 167 2015 11 3.68645e+00 1.42071e+00 149 2015 12 3.22786e+00 1.89972e+00 390 2016 1 3.83416e+00 1.92408e+00 573 2016 2 7.37706e+00 4.67506e+00 629 2016 3 6.09935e+00 4.35689e+00 499 2016 4 3.78892e+00 1.26931e+00 246 2016 5 2.92785e+00 8.17277e-01 94 2016 6 3.63362e+00 1.33283e+00 117 2016 7 6.81941e+00 2.33820e+00 85 2016 8 1.18306e+01 7.62000e+00 139 2016 9 1.71387e+01 9.63168e+00 135 2016 10 5.78045e+00 3.19279e+00 181 2016 11 3.44875e+00 2.06784e+00 479 2016 12 3.46122e+00 1.11415e+00 260 2017 1 3.24779e+00 2.47889e+00 468 2017 2 4.07206e+00 2.50419e+00 736 2017 3 3.34735e+00 1.42970e+00 657 2017 4 2.73696e+00 7.75354e-01 306 2017 5 2.66795e+00 1.91066e+00 56 2017 6 2.11389e-01 2.91271e-01 64 2017 7 4.82732e+00 4.52483e+00 36 2017 8 6.93493e+00 4.06468e+00 45 2017 9 7.29498e+00 3.47803e+00 137 2017 10 6.20604e+00 3.86528e+00 284 2017 11 3.74674e+00 2.50423e+00 514 2017 12 2.96524e+00 1.71242e+00 405 2018 1 3.94246e+00 2.75555e+00 500 2018 2 3.08652e+00 8.99062e-01 357 2018 3 5.31230e+00 4.66812e+00 450 2018 4 4.88734e+00 2.38205e+00 71 2018 5 5.27819e+00 8.11194e+00 197 2018 6 6.48398e+00 1.28280e+00 55 2018 7 7.14663e+00 6.26451e+00 37 2018 8 7.88118e+00 4.51227e+00 61 2018 9 1.10115e+01 8.23598e+00 104 2018 10 7.20612e+00 4.71000e+00 270 2018 11 5.93145e+00 2.05683e+00 199 2018 12 7.89838e+00 5.61563e+00 314 2019 1 1.11740e+01 4.18257e+00 201 2019 2 9.40765e+00 7.71989e+00 87 2019 3 1.08339e+01 5.56948e+00 233 2019 4 4.40698e+00 1.70730e+00 232 2019 5 5.00978e+00 4.82643e+00 65 2019 6 1.05896e-02 7.48800e-03 6 2019 7 2.21868e+00 9.05721e-01 43 2019 8 4.57833e+00 3.07950e+00 65 2019 9 2.84952e+00 1.11407e+00 75 2019 10 4.73101e+00 2.50458e+00 262 2019 11 2.70564e+00 1.34995e+00 358 2019 12 3.03472e+00 2.07750e+00 216 2020 1 2.61165e+00 1.17556e+00 277 2020 2 2.64614e+00 9.75169e-01 272 2020 3 2.30003e+00 1.00606e+00 442 2020 4 3.34811e+00 8.61871e-01 137 2020 5 2.82454e+00 7.36922e-01 164 2020 6 5.12442e+00 1.54421e+00 81 2020 7 5.44674e+00 6.71098e+00 87 2020 8 4.28175e+00 9.86156e-01 67 2020 9 9.33731e+00 4.15948e+00 57 2020 10 7.50882e+00 5.20229e+00 137 2020 11 3.69478e+00 3.00834e+00 361 2020 12 3.65823e+00 1.34388e+00 361 2021 1 4.85386e+00 2.71723e+00 323 2021 2 6.03196e+00 4.20305e+00 410 2021 3 4.18332e+00 1.90694e+00 370 2021 4 4.00072e+00 1.20614e+00 192 2021 5 4.08564e+00 1.67885e+00 290 2021 6 2.56153e+00 5.82475e-01 88 2021 7 nan nan 0 2021 8 nan nan 0 2021 9 1.10536e+01 7.10567e+00 149 2021 10 7.88583e+00 5.55191e+00 209 2021 11 6.53986e+00 3.45112e+00 307 2021 12 4.16378e+00 3.48858e+00 371 2022 1 5.37606e+00 3.53753e+00 512 2022 2 3.16761e+00 1.59134e+00 348 2022 3 3.11182e+00 3.11710e+00 445 2022 4 4.96190e+00 1.24878e+00 62 2022 5 8.16774e+00 5.72633e+00 72 2022 6 2.92793e+00 1.11123e+00 86 2022 7 3.44508e+00 3.17383e+00 92 2022 8 4.97421e+00 4.09920e+00 140 2022 9 3.71567e+00 1.46824e+00 111 2022 10 7.35854e+00 7.53592e+00 695 2022 11 4.58956e+00 3.86043e+00 404 2022 12 3.93722e+00 2.96218e+00 758 2023 1 3.88763e+00 2.73102e+00 791 2023 2 4.00620e+00 2.26790e+00 494 2023 3 4.73859e+00 2.55217e+00 626 2023 4 4.80731e+00 4.09502e+00 148 2023 5 5.10504e+00 2.49532e+00 200 2023 6 6.72534e+00 4.83422e+00 124 2023 7 1.97221e+01 1.35872e+01 30 2023 8 4.19899e+00 8.88282e+00 86 2023 9 7.96544e+00 8.23069e+00 177 2023 10 6.53261e+00 4.33691e+00 324 2023 11 5.96145e+00 4.39917e+00 477 2023 12 8.70500e+00 3.79967e+00 147 2024 1 1.63121e+01 9.02515e+00 282 2024 2 9.46627e+00 4.07271e+00 401 2024 3 1.12555e+01 5.90242e+00 128 2024 4 nan nan 0