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 1.17843e+01 2.46997e+00 221 2002 8 8.99600e+00 9.92015e+00 444 2002 9 1.96979e+01 1.80174e+01 541 2002 10 4.46701e+00 1.67295e+00 656 2002 11 1.17349e+01 1.62647e+01 397 2002 12 3.53056e+00 1.17733e+00 483 2003 1 1.88263e+00 3.87635e-01 754 2003 2 2.85330e+00 1.05116e+00 512 2003 3 4.46026e+00 1.88698e+00 550 2003 4 9.42086e+00 5.51078e+00 469 2003 5 7.19037e+00 2.44868e+00 230 2003 6 1.42272e+01 7.84095e+00 252 2003 7 1.92360e+01 2.44476e+01 542 2003 8 9.86706e+00 2.90511e+00 238 2003 9 6.79372e+00 2.81619e+00 650 2003 10 7.47648e+00 3.45129e+00 481 2003 11 1.51667e+01 1.80077e+01 510 2003 12 3.81563e+00 1.03338e+00 694 2004 1 1.62369e+00 3.54436e-01 820 2004 2 1.91699e+00 5.61486e-01 737 2004 3 2.69951e+00 5.73414e-01 560 2004 4 3.60966e+01 2.40336e+01 271 2004 5 5.27862e+00 2.50753e+00 140 2004 6 7.75417e+00 3.68459e+00 335 2004 7 4.24718e+00 1.49328e-01 64 2004 8 7.00505e+00 2.81002e+00 505 2004 9 1.02463e+01 1.42526e+01 505 2004 10 6.01266e+00 6.50770e+00 649 2004 11 3.35972e+00 8.77630e-01 753 2004 12 2.69454e+00 4.81285e-01 445 2005 1 2.94940e+00 5.88567e-01 432 2005 2 2.82055e+00 4.56703e-01 400 2005 3 4.97892e+00 1.94634e+00 558 2005 4 1.23606e+01 6.45661e+00 646 2005 5 1.19484e+01 2.85179e+00 240 2005 6 1.61261e+01 1.11890e+01 337 2005 7 1.35705e+01 1.01964e+01 245 2005 8 6.01816e+00 1.32604e+00 348 2005 9 1.33982e+01 1.39959e+01 785 2005 10 1.39282e+01 1.61477e+01 374 2005 11 8.52288e+00 7.41563e+00 589 2005 12 3.10592e+00 7.49639e-01 747 2006 1 2.56037e+00 6.13457e-01 672 2006 2 2.40228e+00 4.79700e-01 550 2006 3 2.94609e+00 9.17438e-01 648 2006 4 4.08074e+00 2.53654e+00 457 2006 5 9.25661e+00 8.11076e+00 150 2006 6 7.99337e+00 9.75786e-01 136 2006 7 5.16106e+01 1.26478e+01 56 2006 8 1.15002e+01 1.09644e+01 541 2006 9 1.38451e+01 8.22506e+00 489 2006 10 4.58814e+00 1.03890e+00 638 2006 11 3.88640e+00 1.16090e+00 286 2006 12 4.10700e+00 2.91664e+00 488 2007 1 2.54559e+00 8.83251e-01 558 2007 2 1.86625e+00 7.62699e-01 645 2007 3 3.34798e+00 1.70079e+00 648 2007 4 6.92357e+00 2.30202e+00 358 2007 5 1.68493e+01 1.06270e+01 415 2007 6 2.10632e+01 1.87857e+01 147 2007 7 6.96512e+00 5.33825e+00 406 2007 8 9.00314e+00 5.22834e+00 386 2007 9 1.06236e+01 4.46662e+00 676 2007 10 1.01926e+01 1.14473e+01 469 2007 11 4.11624e+00 1.07702e+00 595 2007 12 2.69148e+00 9.75321e-01 340 2008 1 2.46789e+00 6.27021e-01 521 2008 2 2.42504e+00 5.57423e-01 436 2008 3 4.00448e+00 2.16139e+00 623 2008 4 1.64039e+01 1.51126e+01 650 2008 5 9.31124e+00 4.10556e+00 171 2008 6 6.73238e+00 3.65703e+00 211 2008 7 6.07509e+00 2.47132e+00 213 2008 8 1.52842e+01 1.83547e+01 752 2008 9 9.79088e+00 1.40843e+01 820 2008 10 1.11886e+01 1.52380e+01 839 2008 11 3.91842e+00 9.83731e-01 511 2008 12 2.76787e+00 4.76555e-01 407 2009 1 1.49222e+00 7.01029e-01 905 2009 2 1.38243e+00 4.06122e-01 630 2009 3 2.42706e+00 1.21537e+00 660 2009 4 2.09723e+01 1.70800e+01 367 2009 5 1.08819e+01 1.09346e+01 127 2009 6 5.82885e+00 2.86671e+00 167 2009 7 1.26091e+01 1.55746e+01 397 2009 8 1.67884e+01 2.04162e+01 328 2009 9 1.49355e+01 1.45827e+01 618 2009 10 3.67371e+00 1.49469e+00 430 2009 11 4.53209e+00 2.75870e+00 534 2009 12 3.67050e+00 2.09286e+00 505 2010 1 2.34145e+00 5.99924e-01 651 2010 2 2.43867e+00 5.77298e-01 508 2010 3 4.93056e+00 2.73529e+00 580 2010 4 1.29967e+01 1.31064e+01 538 2010 5 8.28941e+00 4.91542e+00 608 2010 6 6.83579e+00 3.77824e+00 242 2010 7 8.67616e+00 7.39106e+00 438 2010 8 8.84128e+00 6.42946e+00 544 2010 9 8.12306e+00 5.73605e+00 680 2010 10 4.67974e+00 1.46951e+00 620 2010 11 4.50732e+00 1.98198e+00 567 2010 12 3.27516e+00 3.10139e-01 346 2011 1 2.64784e+00 4.68905e-01 363 2011 2 1.71908e+00 2.11961e-01 549 2011 3 4.12112e+00 1.93593e+00 598 2011 4 7.62012e+00 4.17420e+00 250 2011 5 1.19622e+01 3.81390e+00 179 2011 6 2.11066e+01 2.16374e+01 189 2011 7 1.26023e+01 9.52431e+00 465 2011 8 5.55787e+00 3.07983e+00 662 2011 9 6.07769e+00 3.76288e+00 437 2011 10 5.41994e+00 1.13930e+00 346 2011 11 1.06666e+01 1.08615e+01 559 2011 12 4.64112e+00 1.53927e+00 493 2012 1 2.58080e+00 1.04492e+00 478 2012 2 2.37771e+00 3.19982e-01 693 2012 3 4.52797e+00 4.27790e+00 729 2012 4 5.27554e+00 6.12601e+00 302 2012 5 9.43500e+00 4.82606e+00 245 2012 6 9.81714e+00 4.76716e+00 389 2012 7 7.43858e+00 3.54880e+00 644 2012 8 7.51275e+00 3.72374e+00 501 2012 9 1.22566e+01 1.70468e+01 781 2012 10 9.01264e+00 7.81512e+00 476 2012 11 4.17450e+00 7.63144e-01 556 2012 12 2.98631e+00 7.91344e-01 254 2013 1 2.59379e+00 3.15211e-01 553 2013 2 2.24251e+00 2.80579e-01 492 2013 3 3.16547e+00 2.62318e-01 191 2013 4 4.24005e+00 1.47950e+00 708 2013 5 4.72637e+00 1.38426e+00 231 2013 6 1.76748e+01 1.42925e+01 268 2013 7 7.71607e+00 3.55969e+00 187 2013 8 1.43122e+01 8.37294e+00 490 2013 9 8.82837e+00 7.45418e+00 1247 2013 10 7.34670e+00 1.02999e+01 580 2013 11 5.79414e+00 3.96654e+00 883 2013 12 2.65582e+00 6.88198e-01 585 2014 1 2.90242e+00 5.12735e-01 564 2014 2 2.58707e+00 6.04579e-01 471 2014 3 2.97802e+00 8.71808e-01 446 2014 4 5.96056e+00 5.28134e+00 493 2014 5 9.92548e+00 4.59215e+00 363 2014 6 7.22700e+00 4.00472e+00 379 2014 7 9.66712e+00 1.42939e+01 208 2014 8 7.16668e+00 2.68074e+00 688 2014 9 7.70268e+00 3.54880e+00 754 2014 10 4.45263e+00 1.41814e+00 503 2014 11 3.70649e+00 8.91512e-01 377 2014 12 3.95824e+00 1.52595e+00 225 2015 1 2.39962e+00 3.86748e-01 535 2015 2 2.37205e+00 7.04540e-01 250 2015 3 2.62368e+00 1.04419e+00 688 2015 4 3.30214e+00 1.60633e+00 539 2015 5 1.12087e+01 1.05815e+01 309 2015 6 4.38472e+00 1.32700e+00 230 2015 7 1.32640e+01 1.56829e+01 171 2015 8 6.43668e+00 2.79750e+00 535 2015 9 6.99998e+00 5.19483e+00 806 2015 10 5.21653e+00 3.51867e+00 712 2015 11 4.04908e+00 1.00558e+00 816 2015 12 3.82444e+00 7.63580e-01 439 2016 1 2.93710e+00 5.68052e-01 563 2016 2 3.26223e+00 9.70706e-01 553 2016 3 2.67066e+00 3.56787e-01 515 2016 4 4.81949e+00 2.30007e+00 653 2016 5 5.49362e+00 9.12739e-01 212 2016 6 9.95825e+00 1.83656e+01 486 2016 7 5.69850e+00 2.08467e+00 343 2016 8 7.27348e+00 4.58989e+00 835 2016 9 1.70474e+01 2.06299e+01 631 2016 10 5.91792e+00 5.46598e+00 538 2016 11 7.44571e+00 8.79772e+00 773 2016 12 1.23529e+01 9.03125e+00 637 2017 1 4.02575e+00 1.75238e+00 520 2017 2 3.13533e+00 1.86615e+00 476 2017 3 2.81141e+00 8.88134e-01 817 2017 4 5.59907e+00 2.78942e+00 463 2017 5 1.02137e+01 5.21713e+00 235 2017 6 6.02408e+00 8.14911e-01 150 2017 7 1.05098e+01 1.65617e+01 478 2017 8 1.11471e+01 5.70852e+00 532 2017 9 1.58879e+01 2.08049e+01 571 2017 10 1.24545e+01 1.32742e+01 803 2017 11 5.32292e+00 2.40658e+00 700 2017 12 2.49959e+00 4.84564e-01 335 2018 1 2.21830e+00 6.16056e-01 568 2018 2 2.49016e+00 5.84859e-01 385 2018 3 3.03839e+00 6.89615e-01 348 2018 4 6.13632e+00 6.44578e+00 530 2018 5 1.06660e+01 6.55649e+00 356 2018 6 6.46030e+00 3.87095e+00 429 2018 7 9.08282e+00 1.11470e+01 612 2018 8 1.62510e+01 1.60245e+01 423 2018 9 5.57816e+00 1.66993e+00 218 2018 10 4.95177e+00 1.71136e+00 453 2018 11 4.49204e+00 1.87190e+00 610 2018 12 3.20528e+00 7.04170e-01 958 2019 1 2.65058e+00 1.38687e+00 616 2019 2 2.22312e+00 6.76829e-01 434 2019 3 2.25899e+00 9.12230e-01 562 2019 4 5.15856e+00 1.85061e+00 415 2019 5 7.82329e+00 2.65534e+00 221 2019 6 1.15461e+01 1.11431e+01 281 2019 7 1.13702e+01 9.80252e+00 498 2019 8 1.79433e+01 1.69278e+01 353 2019 9 1.46143e+01 1.16070e+01 780 2019 10 6.57208e+00 2.21354e+00 275 2019 11 5.14130e+00 3.28877e+00 699 2019 12 2.78163e+00 3.79271e-01 504 2020 1 2.88865e+00 1.60615e+00 638 2020 2 2.91878e+00 1.02616e+00 632 2020 3 3.65805e+00 7.12197e-01 598 2020 4 7.96301e+00 5.34567e+00 317 2020 5 7.27667e+00 4.26837e+00 607 2020 6 7.04934e+00 2.52742e+00 286 2020 7 5.69808e+00 1.98071e+00 480 2020 8 6.31856e+00 8.67475e-01 188 2020 9 1.02120e+01 9.25996e+00 586 2020 10 5.40151e+00 3.18937e+00 603 2020 11 3.84192e+00 1.14847e+00 410 2020 12 4.06433e+00 7.76346e-01 326 2021 1 3.53230e+00 7.01213e-01 504 2021 2 2.52449e+00 4.41885e-01 376 2021 3 4.15615e+00 1.66370e+00 994 2021 4 3.09715e+00 8.06127e-01 497 2021 5 7.36818e+00 3.50075e+00 403 2021 6 6.09710e+00 7.78368e+00 244 2021 7 1.60335e+01 2.33253e+01 139 2021 8 1.82505e+01 1.66835e+01 204 2021 9 1.22910e+01 1.16890e+01 565 2021 10 9.18375e+00 6.60348e+00 574 2021 11 6.35560e+00 2.73450e+00 877 2021 12 5.87999e+00 1.79729e+00 252 2022 1 2.87320e+00 1.02200e+00 358 2022 2 2.71283e+00 9.33169e-01 719 2022 3 2.61809e+00 7.40048e-01 489 2022 4 4.74715e+00 6.20440e-01 229 2022 5 8.13275e+00 2.91656e+00 193 2022 6 8.55044e+00 1.04421e+01 400 2022 7 4.68187e+00 2.03167e+00 553 2022 8 5.76824e+00 1.82126e+00 680 2022 9 1.21365e+01 9.01407e+00 547 2022 10 5.35545e+00 2.57398e+00 973 2022 11 3.52566e+00 2.21123e+00 1009 2022 12 3.61685e+00 1.29781e+00 530 2023 1 6.13297e+00 4.42939e+00 308 2023 2 2.45486e+00 9.05789e-01 469 2023 3 3.20696e+00 6.94892e-01 516 2023 4 3.80460e+00 6.66692e-01 501 2023 5 1.17580e+01 1.03061e+01 366 2023 6 5.45671e+00 4.05305e+00 335 2023 7 7.67497e+00 7.51892e+00 393 2023 8 8.33773e+00 4.33255e+00 564 2023 9 1.00486e+01 9.19491e+00 456 2023 10 5.33863e+00 2.54858e+00 688 2023 11 5.76110e+00 2.25625e+00 655 2023 12 5.20516e+00 1.35482e+00 446 2024 1 4.36297e+00 1.94362e+00 511 2024 2 4.99584e+00 4.51893e+00 957 2024 3 4.38589e+00 1.26192e+00 512 2024 4 nan nan 0