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 6.71765e+00 3.30813e+00 148 2002 8 6.66784e+00 3.66091e+00 82 2002 9 6.06536e+00 1.80657e+00 254 2002 10 7.38414e+00 2.14729e+00 409 2002 11 7.15820e+00 3.05793e+00 553 2002 12 1.02046e+01 2.64416e+00 398 2003 1 5.29704e+00 2.87200e+00 467 2003 2 1.42974e+01 4.93789e+00 499 2003 3 1.76210e+01 6.18241e+00 183 2003 4 2.16922e+01 5.25751e+00 367 2003 5 1.98837e+01 5.98537e+00 302 2003 6 2.43688e+01 4.71009e+00 59 2003 7 2.31726e+00 1.50186e+00 135 2003 8 4.82877e+00 1.02131e+01 142 2003 9 8.97605e+00 6.31651e+00 237 2003 10 9.14301e+00 4.54621e+00 444 2003 11 1.41362e+01 5.13072e+00 578 2003 12 1.68928e+01 4.10775e+00 604 2004 1 1.52368e+01 6.35996e+00 661 2004 2 1.24885e+01 7.26749e+00 473 2004 3 1.88208e+01 9.47670e+00 374 2004 4 2.77671e+01 9.68455e+00 306 2004 5 3.13749e+01 9.91286e+00 311 2004 6 2.19930e+01 7.98463e+00 318 2004 7 1.37210e+01 2.60010e+00 312 2004 8 7.74680e+00 3.48062e+00 285 2004 9 2.20760e+00 1.30550e+00 95 2004 10 2.08373e+00 1.56598e+00 380 2004 11 5.37368e+00 3.05616e+00 491 2004 12 6.06408e+00 3.37377e+00 419 2005 1 1.17310e+01 6.41093e+00 728 2005 2 1.34771e+01 5.36448e+00 468 2005 3 1.53523e+01 3.52210e+00 268 2005 4 1.25324e+01 7.92006e+00 344 2005 5 2.02582e+01 5.09202e+00 195 2005 6 2.88591e+00 9.74099e-01 22 2005 7 2.74666e+00 2.81939e+00 174 2005 8 3.98344e+00 5.50335e+00 236 2005 9 9.67464e+00 5.31067e+00 328 2005 10 7.84742e+00 4.37845e+00 394 2005 11 6.32191e+00 3.49892e+00 448 2005 12 7.58281e+00 4.86066e+00 619 2006 1 7.28514e+00 4.19281e+00 499 2006 2 1.84775e+01 1.07110e+01 605 2006 3 1.51174e+01 5.60674e+00 664 2006 4 3.30119e+01 7.80328e+00 278 2006 5 3.20264e+01 8.08307e+00 362 2006 6 1.30194e+01 7.77361e+00 242 2006 7 6.21042e+00 0.00000e+00 1 2006 8 2.22507e+01 7.21324e+00 265 2006 9 2.82527e+00 2.81106e+00 329 2006 10 1.00919e+01 5.41978e+00 680 2006 11 1.92285e+01 5.82302e+00 586 2006 12 1.70376e+01 7.29029e+00 189 2007 1 1.75273e+01 6.97312e+00 526 2007 2 2.03843e+01 7.02917e+00 665 2007 3 1.32052e+01 7.00595e+00 168 2007 4 2.57368e+01 5.51522e+00 213 2007 5 2.26960e+01 7.06308e+00 97 2007 6 1.40748e+01 4.31479e+00 330 2007 7 1.67090e+01 5.97500e+00 290 2007 8 1.10866e+01 7.34258e+00 126 2007 9 1.61885e+01 3.78074e+00 357 2007 10 9.19276e+00 6.35906e+00 238 2007 11 2.87081e+01 9.11447e+00 649 2007 12 2.22952e+01 7.75086e+00 682 2008 1 2.38589e+01 9.84631e+00 502 2008 2 2.70862e+01 7.16376e+00 526 2008 3 2.34368e+01 5.76217e+00 509 2008 4 2.56070e+01 7.97552e+00 383 2008 5 1.10947e+01 2.23161e+00 225 2008 6 1.39044e+01 2.80095e+00 219 2008 7 1.28324e+01 1.43091e+00 137 2008 8 1.84995e+01 3.27961e+00 168 2008 9 4.79404e+00 3.36314e+00 159 2008 10 4.46223e+00 2.38648e+00 472 2008 11 1.85649e+01 4.96587e+00 711 2008 12 1.33558e+01 5.28127e+00 924 2009 1 1.36477e+01 4.85680e+00 695 2009 2 1.21927e+01 3.87263e+00 682 2009 3 1.75145e+01 5.44652e+00 295 2009 4 1.18875e+01 3.84716e+00 172 2009 5 1.15647e+01 2.15435e+00 301 2009 6 8.04219e+00 2.88200e+00 158 2009 7 9.33775e+00 1.48600e+00 243 2009 8 7.34750e+00 2.04391e+00 175 2009 9 1.00234e+01 9.89206e+00 207 2009 10 1.45113e+01 4.20285e+00 634 2009 11 1.69892e+01 4.07729e+00 449 2009 12 1.73534e+01 6.22358e+00 369 2010 1 1.57147e+01 7.75349e+00 539 2010 2 8.28424e+00 5.22953e+00 378 2010 3 1.68887e+01 6.04862e+00 518 2010 4 1.95041e+01 6.97236e+00 310 2010 5 1.30970e+01 5.16926e+00 320 2010 6 1.33424e+01 5.12427e+00 397 2010 7 1.07454e+01 3.30902e+00 122 2010 8 8.45535e+00 3.94042e+00 162 2010 9 7.97016e+00 2.81133e+00 63 2010 10 1.31454e+01 6.33309e+00 705 2010 11 1.29673e+01 6.04618e+00 714 2010 12 9.78017e+00 6.41289e+00 666 2011 1 1.24008e+01 5.14399e+00 434 2011 2 1.33715e+01 7.86391e+00 702 2011 3 1.73150e+01 7.88788e+00 777 2011 4 1.33959e+01 4.42111e+00 395 2011 5 1.12662e+01 3.20611e+00 250 2011 6 1.19597e+01 2.45153e+00 233 2011 7 1.65991e+01 3.11843e+00 189 2011 8 1.19325e+01 2.09340e+00 134 2011 9 1.16718e+01 2.93496e+00 275 2011 10 9.72602e+00 3.44288e+00 312 2011 11 7.38635e+00 3.58908e+00 542 2011 12 5.38954e+00 2.71605e+00 756 2012 1 9.69311e+00 5.36077e+00 719 2012 2 1.44554e+01 7.36955e+00 537 2012 3 1.26970e+01 5.31940e+00 503 2012 4 1.40286e+01 2.20027e+00 195 2012 5 1.28660e+01 3.07418e+00 284 2012 6 1.16584e+01 2.66177e+00 58 2012 7 1.90885e+01 2.03431e+00 98 2012 8 2.02644e+01 4.35330e+00 106 2012 9 1.13784e+01 8.26384e+00 228 2012 10 5.22107e+00 3.13389e+00 386 2012 11 7.18694e+00 3.90813e+00 495 2012 12 5.94523e+00 2.96477e+00 402 2013 1 9.39636e+00 2.55452e+00 625 2013 2 1.29722e+01 4.00301e+00 684 2013 3 1.52198e+01 5.39088e+00 535 2013 4 1.53351e+01 2.53552e+00 267 2013 5 1.95065e+01 6.04891e+00 324 2013 6 1.64317e+01 3.99957e+00 242 2013 7 1.31147e+00 2.26825e+00 107 2013 8 9.41669e+00 1.66318e+01 43 2013 9 2.12065e+00 1.73336e+00 107 2013 10 1.24813e+01 8.50572e+00 622 2013 11 1.21360e+01 3.33465e+00 183 2013 12 1.04843e+01 4.31398e+00 570 2014 1 1.51399e+01 6.90519e+00 609 2014 2 1.63350e+01 7.57071e+00 623 2014 3 1.38760e+01 6.71986e+00 591 2014 4 1.28902e+01 5.00602e+00 341 2014 5 6.64337e+00 2.72328e+00 173 2014 6 1.71850e+01 2.69533e+00 161 2014 7 1.45094e+01 2.74915e+00 189 2014 8 1.81573e+01 5.68792e+00 210 2014 9 9.37937e+00 1.87321e+00 244 2014 10 8.46101e+00 3.31780e+00 582 2014 11 1.04158e+01 5.22088e+00 629 2014 12 1.73587e+01 7.87177e+00 576 2015 1 1.00695e+01 5.69240e+00 537 2015 2 1.67728e+01 7.26789e+00 505 2015 3 1.73130e+01 4.91695e+00 636 2015 4 1.63141e+01 4.82616e+00 120 2015 5 1.41636e+01 5.03099e+00 284 2015 6 1.78434e+01 3.10445e+00 198 2015 7 1.51216e+01 3.48035e+00 80 2015 8 1.56141e+01 2.80994e+00 228 2015 9 9.43449e+00 1.09135e+01 229 2015 10 7.88944e+00 1.75833e+00 284 2015 11 1.36236e+01 5.41272e+00 568 2015 12 1.14225e+01 7.07834e+00 244 2016 1 1.28514e+01 5.78213e+00 269 2016 2 2.06969e+00 1.95864e+00 478 2016 3 5.35855e+00 1.97720e+00 340 2016 4 7.81459e+00 4.04936e+00 308 2016 5 2.13034e+01 7.88522e+00 280 2016 6 1.93833e+01 5.22931e+00 189 2016 7 3.84319e+00 2.71126e+00 212 2016 8 4.31518e+00 3.50350e+00 130 2016 9 1.49625e+01 2.14517e+01 332 2016 10 6.70301e+00 5.38029e+00 286 2016 11 1.20377e+01 5.08907e+00 550 2016 12 1.21978e+01 3.18466e+00 527 2017 1 1.03205e+01 6.19065e+00 503 2017 2 1.19954e+01 3.60705e+00 619 2017 3 1.22109e+01 4.58655e+00 507 2017 4 1.31886e+01 2.45258e+00 249 2017 5 1.39944e+01 7.57240e+00 341 2017 6 1.98742e+01 2.23741e+00 144 2017 7 1.41832e+01 2.75362e+00 57 2017 8 9.56730e+00 6.32956e+00 188 2017 9 1.69585e+00 2.34978e+00 309 2017 10 1.90662e+00 1.37651e+00 114 2017 11 7.04231e+00 4.76503e+00 508 2017 12 6.58053e+00 2.47697e+00 980 2018 1 1.02677e+01 5.68709e+00 425 2018 2 1.43600e+01 4.38727e+00 573 2018 3 1.93794e+01 8.38625e+00 778 2018 4 1.99882e+01 4.14624e+00 517 2018 5 1.87942e+01 1.48587e+00 75 2018 6 1.55203e+01 2.41149e+00 246 2018 7 1.18863e+01 5.57730e+00 170 2018 8 1.32873e+00 1.14174e+00 50 2018 9 2.75443e+00 2.90608e+00 225 2018 10 1.32455e+01 1.01364e+01 192 2018 11 1.22849e+01 5.88660e+00 326 2018 12 1.33571e+01 4.11673e+00 512 2019 1 1.37272e+01 5.20217e+00 706 2019 2 1.84421e+01 5.32633e+00 367 2019 3 1.61303e+01 8.71069e+00 437 2019 4 2.18863e+01 7.43377e+00 352 2019 5 2.38652e+01 7.12176e+00 298 2019 6 1.74759e+01 5.74397e+00 303 2019 7 1.76362e+01 5.11715e+00 332 2019 8 1.53901e+01 1.44792e+01 190 2019 9 1.38461e+01 3.50952e+00 349 2019 10 1.50408e+01 4.44929e+00 386 2019 11 8.84109e+00 3.15069e+00 482 2019 12 7.97281e+00 3.09194e+00 475 2020 1 1.32949e+01 5.82766e+00 700 2020 2 1.97173e+01 9.10672e+00 367 2020 3 1.92471e+01 6.92504e+00 367 2020 4 1.92319e+01 6.44155e+00 242 2020 5 2.22574e+01 4.82671e+00 321 2020 6 2.31498e+01 4.38903e+00 252 2020 7 1.82075e+01 1.69644e+00 64 2020 8 1.46865e+01 3.62411e+00 217 2020 9 4.54536e+00 5.99986e+00 168 2020 10 1.03441e+01 5.38640e+00 65 2020 11 5.21912e+00 3.41071e+00 218 2020 12 9.00078e+00 4.42007e+00 443 2021 1 1.54735e+01 8.74327e+00 579 2021 2 1.72702e+01 7.19306e+00 658 2021 3 2.18250e+01 3.98438e+00 405 2021 4 2.17126e+01 4.48838e+00 404 2021 5 1.92767e+01 6.43014e+00 242 2021 6 2.17358e+01 1.41150e+00 118 2021 7 1.76827e+01 2.07994e+00 124 2021 8 1.48040e+01 2.50641e+00 68 2021 9 6.81805e+00 4.97313e+00 141 2021 10 6.25671e+00 4.25512e+00 526 2021 11 1.63760e+01 5.46368e+00 519 2021 12 1.35137e+01 6.23896e+00 779 2022 1 8.95823e+00 2.98195e+00 666 2022 2 1.43980e+01 6.92227e+00 552 2022 3 1.83091e+01 5.79236e+00 738 2022 4 2.16119e+01 1.81680e+00 62 2022 5 2.15668e+01 5.94581e+00 409 2022 6 2.79085e+01 4.45391e+00 172 2022 7 1.77384e+01 4.46691e+00 175 2022 8 1.36172e+01 2.89551e+00 262 2022 9 7.43640e+00 5.24285e+00 259 2022 10 2.58472e+00 2.82508e+00 516 2022 11 6.57861e+00 2.54276e+00 514 2022 12 6.75083e+00 3.05817e+00 613 2023 1 8.82014e+00 5.30608e+00 895 2023 2 9.04847e+00 3.45889e+00 1084 2023 3 1.12698e+01 4.09336e+00 883 2023 4 1.21369e+01 3.04960e+00 390 2023 5 2.07247e+01 4.79946e+00 598 2023 6 1.45851e+01 5.40396e+00 188 2023 7 1.29887e+01 1.64675e+00 192 2023 8 1.84197e+01 1.37697e+01 184 2023 9 1.20568e+01 4.64529e+00 428 2023 10 1.09042e+01 5.49864e+00 467 2023 11 1.33504e+01 6.79981e+00 722 2023 12 1.54998e+01 9.98346e+00 392 2024 1 1.45424e+01 7.05887e+00 107 2024 2 1.95715e+01 8.73978e+00 799 2024 3 8.38282e+00 4.88247e+00 503 2024 4 nan nan 0