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 3.58331e-01 4.99704e-01 215 2002 8 2.16857e+00 2.32453e+00 331 2002 9 8.16229e-01 1.52821e+00 427 2002 10 1.78371e+00 1.96554e+00 558 2002 11 1.30185e+00 1.97376e+00 377 2002 12 1.91439e+00 1.96604e+00 331 2003 1 8.35901e+00 4.52412e+00 680 2003 2 6.21496e+00 4.53296e+00 527 2003 3 3.80340e+00 3.00784e+00 408 2003 4 1.25578e+00 2.75464e+00 396 2003 5 1.20164e+00 1.05798e+00 186 2003 6 9.69384e-01 1.20313e+00 207 2003 7 2.16462e+00 2.60884e+00 329 2003 8 4.79221e-01 4.36602e-01 195 2003 9 2.13085e+00 3.29038e+00 592 2003 10 5.18436e-01 8.17677e-01 439 2003 11 1.41375e-01 1.83532e-01 495 2003 12 1.31067e+00 2.01917e+00 467 2004 1 1.46051e+01 3.96515e+00 718 2004 2 9.42845e+00 6.89242e+00 616 2004 3 4.68120e+00 5.13178e+00 514 2004 4 1.53505e+00 7.63933e+00 207 2004 5 1.81178e+00 1.71977e+00 137 2004 6 7.26720e-01 4.45565e-01 142 2004 7 5.52001e+00 5.45030e-01 64 2004 8 1.71609e+00 1.94886e+00 238 2004 9 2.15605e+00 1.60183e+00 400 2004 10 4.03143e-01 4.72781e-01 454 2004 11 1.17177e+00 1.08268e+00 696 2004 12 1.99203e+00 1.54905e+00 288 2005 1 1.79866e-01 3.56455e-01 301 2005 2 1.47961e+00 1.68785e+00 365 2005 3 3.92863e+00 3.96522e+00 608 2005 4 3.92961e-01 6.83519e-01 559 2005 5 5.20871e-01 1.57222e+00 229 2005 6 1.05195e+00 1.00574e+00 177 2005 7 8.74160e-02 1.44125e-01 239 2005 8 3.03642e+00 1.35560e+00 216 2005 9 6.15969e-01 9.57388e-01 580 2005 10 3.28785e+00 3.72784e+00 338 2005 11 1.08918e+00 1.07641e+00 380 2005 12 2.60173e+00 2.78834e+00 642 2006 1 4.05254e+00 2.81870e+00 450 2006 2 3.53496e+00 3.35254e+00 504 2006 3 5.47421e+00 2.63433e+00 653 2006 4 6.17127e+00 3.60538e+00 338 2006 5 2.27962e+00 2.54366e+00 128 2006 6 1.24105e+00 5.88536e-01 127 2006 7 3.45005e+01 2.09224e+01 17 2006 8 4.09347e+00 3.07629e+00 304 2006 9 3.81035e-01 7.90364e-01 364 2006 10 1.12056e+00 1.62936e+00 546 2006 11 1.36931e+00 2.54637e+00 173 2006 12 2.75326e+00 1.66195e+00 443 2007 1 3.98079e+00 2.09959e+00 493 2007 2 1.12496e+01 5.26677e+00 533 2007 3 4.38539e+00 4.87034e+00 441 2007 4 3.61290e-01 3.97244e-01 233 2007 5 1.53792e-01 1.98072e-01 312 2007 6 2.76279e+00 1.31955e+00 72 2007 7 2.74474e+00 2.84818e+00 190 2007 8 1.27429e+00 1.38463e+00 324 2007 9 4.49332e-01 8.44653e-01 586 2007 10 1.02670e-01 8.79439e-02 394 2007 11 1.06932e+00 9.59153e-01 532 2007 12 2.06577e+00 2.67076e+00 193 2008 1 4.17507e+00 3.10526e+00 362 2008 2 5.71956e+00 3.61319e+00 366 2008 3 4.13499e+00 2.78978e+00 436 2008 4 1.83563e+00 3.01855e+00 573 2008 5 8.91595e-01 9.52373e-01 94 2008 6 1.67264e+00 1.81208e+00 171 2008 7 1.04972e+00 9.95297e-01 128 2008 8 1.82132e+00 2.16064e+00 487 2008 9 2.84251e+00 3.55427e+00 611 2008 10 1.17028e+00 2.62103e+00 516 2008 11 1.14537e+00 9.49230e-01 497 2008 12 4.12754e+00 3.27814e+00 312 2009 1 1.51743e+01 4.83461e+00 719 2009 2 1.55725e+01 6.76554e+00 512 2009 3 1.13432e+01 4.61644e+00 440 2009 4 1.48857e+00 1.72628e+00 295 2009 5 6.29352e-01 3.95407e-01 80 2009 6 5.51582e-01 3.28594e-01 118 2009 7 3.80601e+00 3.52601e+00 262 2009 8 7.19018e-01 6.78970e-01 205 2009 9 4.19364e-01 4.35810e-01 356 2009 10 1.50370e+00 1.33597e+00 220 2009 11 4.05238e-01 3.26587e-01 358 2009 12 2.04618e+00 1.65785e+00 519 2010 1 8.27149e+00 4.42870e+00 439 2010 2 5.14468e+00 4.83156e+00 360 2010 3 1.30891e-01 2.24755e-01 540 2010 4 2.95619e-02 3.38791e-02 387 2010 5 1.56773e+00 1.07054e+00 325 2010 6 1.57514e+00 1.28551e+00 206 2010 7 2.58316e+00 2.23888e+00 272 2010 8 1.05958e+00 1.15189e+00 354 2010 9 2.59337e+00 9.46049e+00 390 2010 10 8.65531e-01 7.02234e-01 579 2010 11 1.22714e+00 1.51806e+00 537 2010 12 9.55616e-01 1.14209e+00 376 2011 1 4.31600e+00 4.26215e+00 311 2011 2 9.48214e+00 5.48546e+00 406 2011 3 4.46560e+00 3.84396e+00 480 2011 4 2.52127e-01 7.32801e-01 137 2011 5 1.05421e-01 1.05229e-01 148 2011 6 7.78401e-01 6.46411e-01 108 2011 7 2.12318e+00 1.78060e+00 244 2011 8 7.55355e+00 8.09771e+00 520 2011 9 1.74684e+00 2.01345e+00 293 2011 10 8.80433e-01 1.18639e+00 301 2011 11 6.86090e-01 9.60421e-01 442 2011 12 1.65821e+00 1.89503e+00 512 2012 1 5.64139e+00 3.91047e+00 446 2012 2 6.81865e+00 2.04090e+00 557 2012 3 1.14105e+00 1.31806e+00 637 2012 4 3.51239e+00 3.17955e+00 273 2012 5 2.11738e+00 3.48462e+00 232 2012 6 1.40677e+00 1.47125e+00 270 2012 7 1.47561e+00 1.40600e+00 418 2012 8 1.02991e+00 1.04605e+00 378 2012 9 1.77112e+00 3.26362e+00 423 2012 10 1.10626e+00 1.27315e+00 309 2012 11 1.13458e-01 2.13766e-01 514 2012 12 2.29697e+00 1.72529e+00 256 2013 1 3.72850e+00 2.60985e+00 496 2013 2 3.66123e+00 6.25867e+00 265 2013 3 3.59342e-01 5.19814e-01 57 2013 4 1.65762e+00 1.54842e+00 583 2013 5 1.32454e+00 8.68599e-01 159 2013 6 9.46951e-01 9.34053e-01 172 2013 7 3.03044e+00 2.71172e+00 188 2013 8 1.17375e+00 5.31413e+00 319 2013 9 2.22038e+00 2.81603e+00 818 2013 10 1.11677e+00 1.31603e+00 434 2013 11 6.47615e-01 6.17752e-01 789 2013 12 2.64466e+00 2.96482e+00 511 2014 1 2.94198e+00 2.98103e+00 458 2014 2 2.90247e+00 4.60157e+00 294 2014 3 7.03795e+00 4.60707e+00 408 2014 4 1.94136e+00 1.20783e+00 357 2014 5 4.90577e-01 4.97887e-01 309 2014 6 2.73941e+00 3.80964e+00 355 2014 7 1.11635e+00 2.00044e+00 70 2014 8 2.06703e+00 7.35144e+00 516 2014 9 1.65885e+00 2.57516e+00 715 2014 10 8.79479e-01 1.32152e+00 490 2014 11 9.59937e-01 1.31005e+00 325 2014 12 7.84277e-01 5.55641e-01 185 2015 1 5.75032e+00 3.96410e+00 516 2015 2 1.72054e+00 2.59747e+00 264 2015 3 9.40653e+00 5.41848e+00 629 2015 4 5.57835e+00 2.98583e+00 401 2015 5 1.27928e+00 9.89409e-01 189 2015 6 3.42882e+00 3.15749e+00 236 2015 7 3.12047e-01 2.41087e-01 95 2015 8 2.24809e+00 2.05586e+00 451 2015 9 1.29748e+00 1.26358e+00 603 2015 10 8.20858e-01 7.92295e-01 680 2015 11 7.16983e-01 6.26635e-01 707 2015 12 4.51543e-01 5.92246e-01 280 2016 1 1.06469e+00 2.42642e+00 468 2016 2 4.07030e-01 5.50028e-01 408 2016 3 2.64429e+00 3.50269e+00 419 2016 4 1.22118e+00 1.28406e+00 455 2016 5 2.10259e+00 1.70223e+00 251 2016 6 4.78533e+00 5.71156e+00 202 2016 7 2.46066e+00 1.91734e+00 173 2016 8 2.16087e+00 2.58323e+00 554 2016 9 1.32330e+00 2.19830e+00 375 2016 10 6.03608e-01 5.48939e-01 487 2016 11 4.27658e-01 4.75793e-01 642 2016 12 1.16823e+00 2.25440e+00 461 2017 1 2.74998e+00 2.72637e+00 441 2017 2 3.91585e+00 3.53942e+00 366 2017 3 4.33556e+00 4.08082e+00 609 2017 4 2.65431e+00 4.51947e+00 375 2017 5 8.17467e-01 9.06033e-01 126 2017 6 7.56544e-01 6.85023e-01 175 2017 7 2.41822e+00 2.02578e+00 204 2017 8 9.22434e-01 1.08331e+00 498 2017 9 9.07489e-01 1.06622e+00 390 2017 10 2.57957e-01 3.78812e-01 670 2017 11 1.40255e+00 2.02597e+00 498 2017 12 4.21856e+00 3.59913e+00 285 2018 1 7.94600e+00 4.90253e+00 415 2018 2 6.49319e+00 4.44272e+00 293 2018 3 1.27987e+00 1.94341e+00 268 2018 4 4.17165e+00 2.80377e+00 436 2018 5 1.86197e-01 9.92077e-01 195 2018 6 1.96513e+00 1.86553e+00 345 2018 7 1.85029e+00 1.57867e+00 476 2018 8 2.53921e+00 9.30026e+00 336 2018 9 1.13488e+00 1.67238e+00 175 2018 10 9.84870e-01 7.04869e-01 314 2018 11 8.40316e-01 8.03519e-01 452 2018 12 3.79349e+00 2.20253e+00 893 2019 1 8.46949e+00 3.89287e+00 452 2019 2 1.05389e+01 4.08204e+00 370 2019 3 1.26636e+01 4.81180e+00 493 2019 4 4.56586e+00 3.27834e+00 307 2019 5 9.92397e-01 1.10509e+00 107 2019 6 1.88456e+00 2.52306e+00 248 2019 7 1.03757e+00 9.12162e-01 326 2019 8 1.77692e+00 1.89863e+00 305 2019 9 2.10006e-01 2.97567e-01 544 2019 10 2.66465e-01 1.94846e-01 200 2019 11 4.42256e-01 3.59702e-01 467 2019 12 4.28222e+00 2.01819e+00 401 2020 1 6.03160e+00 4.44345e+00 508 2020 2 5.52960e+00 5.01468e+00 525 2020 3 1.32090e+00 1.17017e+00 513 2020 4 2.50859e-02 2.43386e-02 148 2020 5 1.46874e+00 1.81988e+00 322 2020 6 1.61888e+00 1.58280e+00 231 2020 7 3.10397e+00 3.48942e+00 408 2020 8 1.35902e+00 4.08512e-01 182 2020 9 6.07092e-01 3.61811e+00 371 2020 10 8.86836e-01 6.92215e-01 359 2020 11 6.43618e-01 5.75690e-01 412 2020 12 1.85233e-01 1.85921e-01 256 2021 1 1.90719e+00 1.54465e+00 401 2021 2 3.42271e+00 3.18222e+00 334 2021 3 3.27232e+00 2.24582e+00 895 2021 4 5.89307e+00 3.56865e+00 452 2021 5 5.66866e-01 4.63119e-01 231 2021 6 1.66195e+00 2.95848e+00 148 2021 7 2.80829e+00 5.66953e+00 102 2021 8 3.18072e-01 3.17329e-01 127 2021 9 3.52281e-01 4.64874e-01 302 2021 10 8.36820e-01 1.11395e+00 593 2021 11 1.82783e-01 2.32990e-01 780 2021 12 6.06572e-01 4.45335e-01 176 2022 1 4.71395e+00 5.83517e+00 405 2022 2 5.19250e+00 4.61461e+00 570 2022 3 8.01071e+00 4.92851e+00 346 2022 4 1.03473e+00 9.85096e-01 230 2022 5 1.20697e+00 1.96481e+00 252 2022 6 3.96541e+00 1.93688e+00 243 2022 7 4.91616e+00 2.95634e+00 460 2022 8 3.80028e+00 3.24205e+00 459 2022 9 5.52086e-01 9.38719e-01 370 2022 10 5.46757e-01 5.97796e-01 809 2022 11 2.47733e+00 1.62120e+00 897 2022 12 3.87970e-01 6.10844e-01 559 2023 1 9.02649e-01 1.48640e+00 320 2023 2 5.80393e+00 5.03889e+00 350 2023 3 3.34209e+00 2.90022e+00 456 2023 4 4.61414e+00 2.36884e+00 452 2023 5 1.41727e+00 1.67989e+00 245 2023 6 4.59457e+00 3.76229e+00 250 2023 7 3.21214e+00 2.20556e+00 304 2023 8 2.56569e+00 7.45559e+00 481 2023 9 1.51861e+00 2.09039e+00 431 2023 10 5.37089e-01 6.97414e-01 502 2023 11 2.74860e-01 3.39877e-01 575 2023 12 8.09128e-01 1.58854e+00 335 2024 1 1.77212e+00 3.14022e+00 424 2024 2 1.88994e+00 2.48334e+00 927 2024 3 1.02356e+00 7.48332e-01 390 2024 4 nan nan 0