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 6.14495e+01 2.27478e-01 292 2002 8 5.74655e+01 1.18828e-01 64 2002 9 5.26194e+01 2.19323e+00 346 2002 10 4.55682e+01 2.41956e+00 746 2002 11 3.80560e+01 1.67481e+00 730 2002 12 3.39958e+01 4.28949e-01 731 2003 1 3.58515e+01 1.12118e+00 646 2003 2 4.29154e+01 2.09602e+00 820 2003 3 5.00965e+01 2.21721e+00 544 2003 4 5.80568e+01 1.36059e+00 380 2003 5 6.13317e+01 5.56147e-01 210 2003 6 6.14354e+01 5.78818e-01 128 2003 7 6.09265e+01 5.57199e-01 190 2003 8 5.78101e+01 2.24855e-01 127 2003 9 5.26548e+01 1.96248e+00 259 2003 10 4.53407e+01 2.47383e+00 666 2003 11 3.71114e+01 1.43382e+00 946 2003 12 3.40937e+01 4.96239e-01 564 2004 1 3.60507e+01 1.39924e+00 770 2004 2 4.22333e+01 2.38626e+00 590 2004 3 5.20799e+01 1.54129e+00 195 2004 4 5.76282e+01 1.43848e+00 348 2004 5 6.19310e+01 6.90392e-01 186 2004 6 6.20325e+01 3.25683e-01 385 2004 7 6.08167e+01 8.45116e-01 279 2004 8 5.79332e+01 1.17103e+00 534 2004 9 5.14988e+01 1.23725e+00 385 2004 10 4.34404e+01 2.45119e+00 555 2004 11 3.77586e+01 1.42687e+00 499 2004 12 3.37539e+01 7.21322e-01 517 2005 1 3.69204e+01 1.57516e+00 725 2005 2 4.29491e+01 2.10211e+00 624 2005 3 5.12557e+01 2.67378e+00 265 2005 4 5.77524e+01 1.31962e+00 628 2005 5 6.09112e+01 1.28011e+00 370 2005 6 6.12156e+01 6.03675e-01 227 2005 7 6.06388e+01 6.89680e-01 249 2005 8 5.75703e+01 1.32255e+00 390 2005 9 5.38265e+01 1.20918e+00 585 2005 10 4.58094e+01 1.73095e+00 331 2005 11 3.77657e+01 1.83142e+00 499 2005 12 3.40736e+01 3.53171e-01 734 2006 1 3.53389e+01 1.36898e+00 638 2006 2 4.34341e+01 1.91509e+00 787 2006 3 5.13959e+01 2.49593e+00 949 2006 4 5.75994e+01 1.79509e+00 559 2006 5 6.14058e+01 8.86706e-01 632 2006 6 6.18223e+01 5.18258e-01 479 2006 7 6.09481e+01 3.75443e-01 269 2006 8 5.81693e+01 1.31546e+00 377 2006 9 5.28853e+01 1.75405e+00 469 2006 10 4.43043e+01 2.30128e+00 991 2006 11 3.76244e+01 1.32645e+00 588 2006 12 3.41800e+01 6.61279e-01 261 2007 1 3.67573e+01 1.88297e+00 440 2007 2 4.41287e+01 1.85334e+00 434 2007 3 5.00812e+01 1.80942e+00 315 2007 4 5.77300e+01 1.57040e+00 419 2007 5 6.14217e+01 5.12209e-01 316 2007 6 6.16378e+01 3.13888e-01 391 2007 7 6.11545e+01 1.57249e+00 396 2007 8 5.85897e+01 1.34089e+00 344 2007 9 5.21573e+01 2.56243e+00 298 2007 10 4.50716e+01 2.59577e+00 389 2007 11 3.82006e+01 1.54647e+00 888 2007 12 3.37772e+01 6.82492e-01 794 2008 1 3.63148e+01 1.58106e+00 401 2008 2 4.27012e+01 2.80648e+00 448 2008 3 5.03753e+01 2.26221e+00 569 2008 4 5.81854e+01 1.43761e+00 450 2008 5 6.10146e+01 9.40598e-01 442 2008 6 6.14912e+01 9.30144e-01 235 2008 7 6.06611e+01 3.60072e-01 178 2008 8 5.85209e+01 1.27640e+00 319 2008 9 5.23905e+01 1.10310e+00 221 2008 10 4.62905e+01 2.39013e+00 420 2008 11 3.72255e+01 1.59734e+00 982 2008 12 3.39504e+01 4.78274e-01 740 2009 1 3.70488e+01 1.65693e+00 449 2009 2 4.45535e+01 1.59757e+00 371 2009 3 5.01463e+01 1.94203e+00 539 2009 4 5.64904e+01 8.95503e-01 242 2009 5 6.10127e+01 5.20675e-01 241 2009 6 6.18664e+01 2.85282e-01 176 2009 7 6.10797e+01 4.02919e-01 397 2009 8 5.82601e+01 1.20421e+00 269 2009 9 5.27199e+01 1.74778e+00 336 2009 10 4.55947e+01 2.17452e+00 698 2009 11 3.67340e+01 1.32697e+00 651 2009 12 3.39976e+01 8.18374e-01 509 2010 1 3.65208e+01 1.80174e+00 345 2010 2 4.31490e+01 1.98249e+00 347 2010 3 5.10972e+01 2.55481e+00 405 2010 4 5.71197e+01 1.59753e+00 280 2010 5 6.16908e+01 5.75304e-01 387 2010 6 6.19240e+01 5.91078e-01 389 2010 7 6.01409e+01 4.93268e-01 182 2010 8 5.91567e+01 6.09620e-01 256 2010 9 5.43953e+01 1.44704e+00 147 2010 10 4.53904e+01 2.63897e+00 949 2010 11 3.77712e+01 1.59873e+00 831 2010 12 3.38102e+01 7.38718e-01 919 2011 1 3.56347e+01 1.30194e+00 649 2011 2 4.39425e+01 2.22679e+00 820 2011 3 5.19049e+01 1.64397e+00 700 2011 4 5.81196e+01 1.10981e+00 571 2011 5 6.11269e+01 9.30677e-01 595 2011 6 6.15090e+01 7.73823e-01 338 2011 7 6.11325e+01 5.57233e-01 412 2011 8 5.90307e+01 1.24421e+00 175 2011 9 5.33986e+01 1.18661e+00 558 2011 10 4.66811e+01 1.61391e+00 354 2011 11 3.80723e+01 1.80377e+00 900 2011 12 3.40002e+01 5.16912e-01 898 2012 1 3.57232e+01 1.23979e+00 738 2012 2 4.50938e+01 1.07006e+00 329 2012 3 5.11762e+01 2.47443e+00 594 2012 4 5.76222e+01 1.37265e+00 567 2012 5 6.09688e+01 8.79832e-01 291 2012 6 6.17993e+01 4.02588e-01 291 2012 7 6.12212e+01 6.01827e-01 236 2012 8 5.87451e+01 1.54932e+00 358 2012 9 5.32351e+01 1.76943e+00 369 2012 10 4.47738e+01 2.01347e+00 673 2012 11 3.81200e+01 1.64475e+00 844 2012 12 3.40429e+01 2.95323e-01 471 2013 1 3.69537e+01 1.41866e+00 390 2013 2 4.25079e+01 2.19604e+00 436 2013 3 5.21164e+01 2.52039e+00 647 2013 4 5.79373e+01 1.06421e+00 491 2013 5 6.16307e+01 5.65070e-01 320 2013 6 6.14186e+01 4.00932e-01 103 2013 7 6.09784e+01 5.29305e-01 180 2013 8 5.68044e+01 8.31523e-01 74 2013 9 5.27036e+01 1.45455e+00 247 2013 10 4.53376e+01 2.41434e+00 630 2013 11 3.67920e+01 1.51070e+00 546 2013 12 3.37494e+01 7.49072e-01 501 2014 1 3.67174e+01 1.84352e+00 375 2014 2 4.32853e+01 1.80286e+00 596 2014 3 5.14926e+01 2.08966e+00 453 2014 4 5.85643e+01 1.32624e+00 436 2014 5 6.07960e+01 3.21774e-01 307 2014 6 6.17250e+01 2.77626e-01 477 2014 7 6.09232e+01 5.75575e-01 241 2014 8 5.87279e+01 1.26390e+00 601 2014 9 5.40306e+01 1.73946e+00 273 2014 10 4.57041e+01 2.46256e+00 755 2014 11 3.77467e+01 2.25459e+00 618 2014 12 3.40792e+01 2.73011e-01 609 2015 1 3.66945e+01 2.14650e+00 685 2015 2 4.32725e+01 2.14180e+00 794 2015 3 5.18440e+01 2.67967e+00 411 2015 4 5.63174e+01 1.17602e+00 316 2015 5 6.10255e+01 6.53825e-01 430 2015 6 6.09072e+01 5.34602e-01 244 2015 7 6.08051e+01 6.53042e-01 344 2015 8 5.88216e+01 1.03985e+00 523 2015 9 5.43782e+01 1.45778e+00 230 2015 10 4.49859e+01 2.76152e+00 694 2015 11 3.60365e+01 1.77312e+00 540 2015 12 3.37384e+01 5.10054e-01 343 2016 1 3.62407e+01 2.20632e+00 332 2016 2 4.45772e+01 1.99441e+00 458 2016 3 5.12568e+01 2.53200e+00 412 2016 4 5.71244e+01 1.07120e+00 363 2016 5 6.12594e+01 1.36584e+00 332 2016 6 6.20837e+01 2.69415e-01 371 2016 7 6.10793e+01 8.18562e-01 318 2016 8 5.88550e+01 9.54893e-01 186 2016 9 5.20250e+01 1.64016e+00 384 2016 10 4.55641e+01 1.74904e+00 526 2016 11 3.80100e+01 1.77361e+00 667 2016 12 3.35749e+01 4.24876e-01 511 2017 1 3.72781e+01 1.54114e+00 466 2017 2 4.33502e+01 1.99842e+00 593 2017 3 5.14843e+01 1.75196e+00 593 2017 4 5.77008e+01 1.24436e+00 419 2017 5 6.12166e+01 9.59172e-01 452 2017 6 6.18534e+01 2.57153e-01 260 2017 7 6.09902e+01 4.88722e-01 146 2017 8 5.88216e+01 1.02759e+00 454 2017 9 5.17085e+01 1.37973e+00 642 2017 10 4.39537e+01 1.72712e+00 312 2017 11 3.74788e+01 1.80584e+00 440 2017 12 3.39601e+01 2.18865e-01 679 2018 1 3.63253e+01 1.76894e+00 493 2018 2 4.20424e+01 1.90947e+00 440 2018 3 5.07114e+01 2.17718e+00 637 2018 4 5.78940e+01 1.67048e+00 595 2018 5 6.06838e+01 2.35164e-01 64 2018 6 6.16199e+01 2.41840e-01 127 2018 7 6.10865e+01 6.16164e-01 539 2018 8 5.85622e+01 9.71522e-01 385 2018 9 5.28536e+01 1.19203e+00 344 2018 10 4.44496e+01 2.69955e+00 682 2018 11 3.83077e+01 1.91784e+00 273 2018 12 3.39341e+01 5.17498e-01 618 2019 1 3.56055e+01 9.78094e-01 683 2019 2 4.29556e+01 2.83821e+00 526 2019 3 5.20377e+01 2.24828e+00 669 2019 4 5.77209e+01 1.85996e+00 368 2019 5 6.13229e+01 8.61344e-01 357 2019 6 6.18630e+01 5.69370e-01 572 2019 7 6.10024e+01 3.06425e-01 198 2019 8 5.82367e+01 9.99406e-01 394 2019 9 5.20570e+01 1.95548e+00 403 2019 10 4.60398e+01 2.03827e+00 368 2019 11 3.75690e+01 1.87690e+00 739 2019 12 3.42234e+01 4.25334e-01 385 2020 1 3.60671e+01 1.77614e+00 543 2020 2 4.38423e+01 2.32718e+00 810 2020 3 5.08662e+01 2.07600e+00 486 2020 4 5.76249e+01 1.68147e+00 208 2020 5 6.13375e+01 5.13113e-01 355 2020 6 6.17218e+01 3.73152e-01 279 2020 7 6.12969e+01 5.88392e-01 300 2020 8 5.87217e+01 1.23403e+00 456 2020 9 5.20957e+01 2.09431e+00 295 2020 10 4.48219e+01 1.95264e+00 254 2020 11 3.59661e+01 7.45206e-01 189 2020 12 3.38973e+01 3.82952e-01 651 2021 1 3.58630e+01 1.81155e+00 495 2021 2 4.38327e+01 1.84350e+00 482 2021 3 5.04195e+01 2.98094e+00 458 2021 4 5.74638e+01 1.53113e+00 431 2021 5 6.09271e+01 5.57977e-01 334 2021 6 6.19012e+01 2.27855e-01 53 2021 7 6.01449e+01 4.57361e-01 132 2021 8 5.91316e+01 7.79310e-01 116 2021 9 5.21118e+01 2.10196e+00 366 2021 10 4.42713e+01 1.81990e+00 488 2021 11 3.74990e+01 1.86243e+00 582 2021 12 3.41259e+01 3.57686e-01 508 2022 1 3.56681e+01 1.27489e+00 518 2022 2 4.36184e+01 1.75011e+00 422 2022 3 5.22444e+01 2.64128e+00 155 2022 4 5.84409e+01 6.88924e-01 14 2022 5 6.13656e+01 8.15317e-01 419 2022 6 6.18974e+01 3.34669e-01 348 2022 7 6.14944e+01 4.12230e-01 312 2022 8 5.72784e+01 1.37370e+00 222 2022 9 5.35451e+01 2.20872e+00 324 2022 10 4.46180e+01 2.91581e+00 686 2022 11 3.74924e+01 1.48390e+00 344 2022 12 3.35461e+01 4.56116e-01 633 2023 1 3.60057e+01 1.44732e+00 778 2023 2 4.35188e+01 3.27252e+00 480 2023 3 4.93694e+01 2.30647e+00 415 2023 4 5.73261e+01 1.38288e+00 207 2023 5 6.11243e+01 7.69454e-01 715 2023 6 6.19404e+01 3.17272e-01 335 2023 7 6.09505e+01 4.97183e-01 223 2023 8 5.84982e+01 1.41462e+00 451 2023 9 5.35826e+01 1.34612e+00 521 2023 10 4.39355e+01 2.76922e+00 782 2023 11 3.69686e+01 1.63370e+00 739 2023 12 3.37130e+01 6.53972e-01 415 2024 1 3.62738e+01 1.96140e+00 245 2024 2 4.41895e+01 1.56465e+00 585 2024 3 5.07001e+01 1.93217e+00 414 2024 4 nan nan 0