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 2.49492e+00 2.25529e+00 291 2002 8 3.52161e+00 1.52660e+00 405 2002 9 2.14155e+00 1.11313e+00 406 2002 10 2.77455e+00 6.60800e-01 548 2002 11 2.49504e+00 8.48879e-01 289 2002 12 3.07646e+00 6.86173e-01 533 2003 1 4.37045e+00 1.12504e+00 727 2003 2 3.84342e+00 1.05486e+00 559 2003 3 3.79288e+00 1.02397e+00 482 2003 4 2.39490e+00 1.10018e+00 406 2003 5 2.36467e+00 1.24059e+00 251 2003 6 1.75328e+00 9.39349e-01 159 2003 7 2.45124e+00 1.13867e+00 343 2003 8 2.94715e+00 1.57249e+00 250 2003 9 2.60318e+00 1.40435e+00 483 2003 10 2.14358e+00 9.82309e-01 495 2003 11 1.91357e+00 9.16448e-01 551 2003 12 2.44675e+00 1.13725e+00 547 2004 1 5.68087e+00 6.82115e-01 849 2004 2 4.73464e+00 1.14984e+00 704 2004 3 3.53665e+00 1.25581e+00 512 2004 4 1.91947e+00 1.00690e+00 260 2004 5 3.47859e+00 7.48892e-01 133 2004 6 2.31143e+00 1.18373e+00 224 2004 7 3.66554e+00 1.89908e-01 64 2004 8 2.19892e+00 1.08404e+00 352 2004 9 2.84885e+00 1.16779e+00 331 2004 10 2.51050e+00 9.64813e-01 481 2004 11 2.72602e+00 7.87183e-01 664 2004 12 3.54252e+00 5.78420e-01 339 2005 1 1.74562e+00 6.14603e-01 486 2005 2 3.05446e+00 7.87682e-01 361 2005 3 3.82342e+00 8.90876e-01 550 2005 4 2.00341e+00 7.49594e-01 492 2005 5 2.34409e+00 1.47863e+00 274 2005 6 2.42801e+00 1.06384e+00 172 2005 7 1.53672e+00 7.91828e-01 155 2005 8 3.51467e+00 6.65296e-01 175 2005 9 2.18157e+00 9.52070e-01 528 2005 10 2.72696e+00 1.36306e+00 330 2005 11 2.65933e+00 6.70809e-01 429 2005 12 3.45881e+00 9.45264e-01 547 2006 1 3.56010e+00 9.95113e-01 498 2006 2 3.90466e+00 9.45505e-01 529 2006 3 4.18023e+00 5.56423e-01 573 2006 4 3.68449e+00 1.52898e+00 414 2006 5 3.44800e+00 1.70185e+00 94 2006 6 3.14437e+00 2.55196e-01 104 2006 7 5.66245e-01 5.34072e-02 4 2006 8 2.58765e+00 1.72174e+00 382 2006 9 1.65406e+00 6.60947e-01 344 2006 10 2.43687e+00 8.36575e-01 547 2006 11 2.52785e+00 7.76836e-01 264 2006 12 3.46801e+00 5.15825e-01 508 2007 1 3.62597e+00 6.39437e-01 434 2007 2 5.02872e+00 1.23671e+00 600 2007 3 3.92795e+00 1.17341e+00 525 2007 4 1.78525e+00 4.32312e-01 290 2007 5 1.80738e+00 6.42069e-01 248 2007 6 2.68264e+00 8.27302e-01 67 2007 7 3.75447e+00 1.34074e+00 244 2007 8 2.46572e+00 1.09435e+00 393 2007 9 2.17830e+00 7.69052e-01 553 2007 10 1.88543e+00 4.82708e-01 399 2007 11 2.63832e+00 7.70026e-01 470 2007 12 2.92630e+00 6.53810e-01 293 2008 1 3.26012e+00 1.31564e+00 483 2008 2 4.59633e+00 7.45486e-01 387 2008 3 3.60882e+00 8.70113e-01 562 2008 4 2.50422e+00 1.49252e+00 497 2008 5 1.60971e+00 1.27994e+00 98 2008 6 3.08790e+00 1.10789e+00 220 2008 7 2.52598e+00 6.06112e-01 166 2008 8 2.74301e+00 1.27943e+00 357 2008 9 3.01097e+00 1.49112e+00 467 2008 10 2.29428e+00 7.40724e-01 512 2008 11 2.93431e+00 5.09421e-01 508 2008 12 3.36170e+00 8.96567e-01 382 2009 1 5.83752e+00 7.41167e-01 679 2009 2 5.97993e+00 9.64571e-01 558 2009 3 4.89855e+00 9.66672e-01 513 2009 4 2.27102e+00 1.21093e+00 360 2009 5 1.42519e+00 8.11357e-01 123 2009 6 3.20414e+00 1.29388e+00 128 2009 7 3.01326e+00 1.27091e+00 176 2009 8 2.60519e+00 9.93152e-01 221 2009 9 1.53573e+00 7.73567e-01 234 2009 10 3.43658e+00 8.76267e-01 378 2009 11 2.62146e+00 4.79902e-01 421 2009 12 3.08581e+00 6.90879e-01 459 2010 1 4.35068e+00 1.12700e+00 539 2010 2 4.07729e+00 7.58881e-01 315 2010 3 1.82984e+00 5.45728e-01 619 2010 4 1.67412e+00 3.90654e-01 392 2010 5 2.40525e+00 1.10048e+00 315 2010 6 2.55055e+00 1.42101e+00 210 2010 7 3.33863e+00 9.81337e-01 319 2010 8 2.87149e+00 9.91313e-01 393 2010 9 2.55054e+00 1.05224e+00 455 2010 10 2.31696e+00 6.13771e-01 633 2010 11 2.34725e+00 8.47694e-01 454 2010 12 2.66539e+00 6.74622e-01 288 2011 1 3.35848e+00 1.29062e+00 324 2011 2 5.06457e+00 9.34707e-01 402 2011 3 3.50633e+00 9.59849e-01 541 2011 4 2.58529e+00 1.22883e+00 238 2011 5 1.23719e+00 4.81328e-01 133 2011 6 2.19114e+00 9.56714e-01 112 2011 7 2.91689e+00 1.23742e+00 277 2011 8 4.07704e+00 1.97310e+00 536 2011 9 2.39768e+00 1.24653e+00 331 2011 10 2.08699e+00 5.32483e-01 253 2011 11 2.42189e+00 7.64000e-01 454 2011 12 3.06847e+00 6.37143e-01 499 2012 1 3.83869e+00 9.08691e-01 512 2012 2 4.39916e+00 4.12429e-01 648 2012 3 2.49607e+00 7.13507e-01 659 2012 4 3.63323e+00 1.97130e+00 291 2012 5 2.67766e+00 1.94458e+00 223 2012 6 2.06471e+00 1.17392e+00 232 2012 7 2.80789e+00 1.22222e+00 494 2012 8 1.88988e+00 8.41041e-01 338 2012 9 2.64723e+00 1.25169e+00 541 2012 10 2.39618e+00 8.15652e-01 365 2012 11 2.04575e+00 5.56229e-01 527 2012 12 3.21044e+00 1.60396e+00 388 2013 1 3.60427e+00 6.27389e-01 492 2013 2 2.83998e+00 1.26636e+00 474 2013 3 1.11041e+00 2.91733e-01 123 2013 4 3.26819e+00 6.71346e-01 720 2013 5 3.48628e+00 3.71143e-01 255 2013 6 1.58389e+00 8.44543e-01 190 2013 7 2.77763e+00 1.49403e+00 239 2013 8 2.03967e+00 8.82596e-01 269 2013 9 3.42454e+00 1.31454e+00 879 2013 10 2.98266e+00 8.88839e-01 389 2013 11 2.35055e+00 8.28096e-01 827 2013 12 3.23544e+00 1.09572e+00 430 2014 1 3.40897e+00 1.30461e+00 464 2014 2 3.86954e+00 1.33674e+00 350 2014 3 4.87742e+00 1.05855e+00 468 2014 4 3.25527e+00 4.42718e-01 404 2014 5 2.24837e+00 9.69365e-01 182 2014 6 3.17417e+00 1.24141e+00 321 2014 7 3.45578e+00 5.24228e-01 116 2014 8 2.45948e+00 9.66483e-01 566 2014 9 2.52982e+00 1.02438e+00 554 2014 10 2.44597e+00 7.58768e-01 473 2014 11 2.91991e+00 9.09183e-01 336 2014 12 3.55234e+00 5.12033e-01 182 2015 1 3.94120e+00 1.28752e+00 444 2015 2 2.73101e+00 1.37678e+00 222 2015 3 4.63992e+00 9.28498e-01 622 2015 4 4.87481e+00 1.16500e+00 466 2015 5 2.78593e+00 7.83640e-01 177 2015 6 3.72484e+00 7.84957e-01 276 2015 7 1.54682e+00 6.66040e-01 159 2015 8 2.77858e+00 1.10862e+00 422 2015 9 2.46362e+00 8.93693e-01 642 2015 10 2.38762e+00 5.75785e-01 590 2015 11 2.44892e+00 5.28910e-01 766 2015 12 2.58553e+00 7.02101e-01 455 2016 1 2.72042e+00 8.48212e-01 468 2016 2 2.52960e+00 6.13682e-01 514 2016 3 3.50719e+00 1.00496e+00 595 2016 4 3.17490e+00 9.10630e-01 621 2016 5 2.59357e+00 2.27309e-01 167 2016 6 3.60769e+00 1.30132e+00 278 2016 7 3.08728e+00 1.19922e+00 283 2016 8 2.65213e+00 1.15014e+00 704 2016 9 2.54400e+00 1.44368e+00 288 2016 10 2.51119e+00 3.98772e-01 508 2016 11 2.22263e+00 5.30636e-01 764 2016 12 2.33202e+00 8.17748e-01 457 2017 1 3.39032e+00 1.24716e+00 576 2017 2 3.54140e+00 1.09891e+00 346 2017 3 3.92438e+00 9.97311e-01 732 2017 4 3.38904e+00 1.45057e+00 476 2017 5 2.62117e+00 8.19827e-01 135 2017 6 2.37020e+00 3.40911e-01 187 2017 7 4.24228e+00 2.02123e+00 337 2017 8 2.19757e+00 1.30650e+00 462 2017 9 2.02448e+00 1.25516e+00 325 2017 10 1.55716e+00 5.86125e-01 661 2017 11 2.39590e+00 7.60650e-01 583 2017 12 4.16454e+00 8.32108e-01 413 2018 1 4.20110e+00 9.71865e-01 519 2018 2 4.20810e+00 7.39974e-01 347 2018 3 2.70092e+00 1.07916e+00 311 2018 4 3.58188e+00 6.41377e-01 454 2018 5 2.60991e+00 1.89168e+00 160 2018 6 2.67335e+00 1.01102e+00 339 2018 7 2.97255e+00 9.72098e-01 455 2018 8 2.73061e+00 1.74908e+00 374 2018 9 2.19670e+00 9.14788e-01 180 2018 10 2.60197e+00 5.92984e-01 459 2018 11 2.87034e+00 4.41051e-01 542 2018 12 3.64530e+00 5.45104e-01 947 2019 1 4.67490e+00 7.67128e-01 618 2019 2 4.74420e+00 9.35483e-01 426 2019 3 5.72767e+00 8.13889e-01 588 2019 4 3.55037e+00 9.43418e-01 419 2019 5 2.11254e+00 9.60319e-01 135 2019 6 2.30483e+00 1.30079e+00 217 2019 7 1.97312e+00 9.94130e-01 407 2019 8 2.33991e+00 9.40987e-01 251 2019 9 1.92163e+00 6.84225e-01 374 2019 10 2.02676e+00 5.10016e-01 268 2019 11 2.14848e+00 5.62427e-01 620 2019 12 3.84436e+00 5.61427e-01 407 2020 1 4.05282e+00 1.05428e+00 620 2020 2 4.17003e+00 1.15812e+00 538 2020 3 3.54093e+00 6.93929e-01 507 2020 4 1.80758e+00 6.21556e-01 236 2020 5 2.67564e+00 1.43492e+00 459 2020 6 2.92597e+00 1.01392e+00 215 2020 7 3.36181e+00 1.17410e+00 495 2020 8 2.80671e+00 2.52054e-01 159 2020 9 1.21596e+00 9.96172e-01 276 2020 10 2.47380e+00 9.14054e-01 504 2020 11 2.44851e+00 7.93672e-01 336 2020 12 2.05366e+00 4.04933e-01 291 2021 1 3.06869e+00 6.38037e-01 478 2021 2 3.00470e+00 1.14520e+00 287 2021 3 3.51128e+00 8.18048e-01 926 2021 4 4.69894e+00 6.99302e-01 465 2021 5 2.09350e+00 7.32113e-01 294 2021 6 3.06048e+00 2.20250e+00 205 2021 7 2.28750e+00 1.12127e-01 48 2021 8 2.67065e+00 1.35983e+00 107 2021 9 2.47510e+00 9.39514e-01 349 2021 10 2.35367e+00 1.04710e+00 434 2021 11 2.05028e+00 4.58917e-01 703 2021 12 2.14717e+00 6.18000e-01 256 2022 1 3.51417e+00 1.46811e+00 506 2022 2 3.71604e+00 1.26515e+00 641 2022 3 4.32518e+00 1.54132e+00 502 2022 4 2.64392e+00 1.33507e+00 220 2022 5 2.04320e+00 1.24253e+00 170 2022 6 3.92777e+00 8.49312e-01 335 2022 7 3.42191e+00 8.39787e-01 489 2022 8 3.55815e+00 9.41994e-01 507 2022 9 1.98280e+00 1.00815e+00 293 2022 10 2.22833e+00 7.35983e-01 804 2022 11 3.22531e+00 5.06088e-01 866 2022 12 2.23534e+00 9.02649e-01 518 2023 1 2.32072e+00 9.15897e-01 282 2023 2 4.62480e+00 1.03953e+00 366 2023 3 3.96073e+00 1.03838e+00 400 2023 4 3.60328e+00 1.01682e+00 530 2023 5 2.32823e+00 1.12104e+00 240 2023 6 3.79412e+00 1.09788e+00 271 2023 7 3.43343e+00 2.14745e+00 315 2023 8 2.12173e+00 1.32376e+00 472 2023 9 2.72832e+00 7.45227e-01 402 2023 10 2.37777e+00 8.26837e-01 523 2023 11 1.76631e+00 6.61225e-01 523 2023 12 1.98725e+00 9.49922e-01 364 2024 1 2.69152e+00 1.18886e+00 463 2024 2 3.09686e+00 9.10084e-01 923 2024 3 2.82830e+00 5.27644e-01 499 2024 4 nan nan 0