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 2.08122e+00 1.32604e+00 243 2002 8 3.76011e+00 1.49443e+00 362 2002 9 2.25123e+00 1.00102e+00 443 2002 10 2.51129e+00 8.89889e-01 538 2002 11 2.85518e+00 1.32691e+00 382 2002 12 3.76208e+00 8.01697e-01 488 2003 1 3.80333e+00 5.71970e-01 317 2003 2 3.18047e+00 8.88082e-01 372 2003 3 3.88092e+00 1.48477e+00 525 2003 4 3.68310e+00 1.18919e+00 347 2003 5 3.32104e+00 1.23537e+00 297 2003 6 2.48969e+00 1.94403e+00 205 2003 7 3.40954e+00 1.51203e+00 556 2003 8 3.98479e+00 1.62803e+00 622 2003 9 3.21774e+00 1.35208e+00 757 2003 10 3.39654e+00 1.82558e+00 455 2003 11 1.93534e+00 5.97183e-01 473 2003 12 1.83887e+00 3.56298e-01 363 2004 1 1.81737e+00 2.53984e-01 248 2004 2 3.47830e+00 2.31879e+00 483 2004 3 1.97244e+00 7.28165e-01 427 2004 4 3.00263e+00 1.30714e+00 378 2004 5 4.53503e+00 1.17914e+00 431 2004 6 3.27209e+00 1.17242e+00 216 2004 7 4.90940e+00 9.45464e-01 186 2004 8 4.28568e+00 1.52733e+00 474 2004 9 3.39836e+00 1.36704e+00 706 2004 10 3.76375e+00 1.24311e+00 290 2004 11 2.19542e+00 8.10757e-01 621 2004 12 2.93594e+00 8.70519e-01 297 2005 1 2.84727e+00 4.65221e-01 242 2005 2 3.20672e+00 9.08522e-01 400 2005 3 3.15024e+00 1.18677e+00 684 2005 4 3.14604e+00 1.49652e+00 673 2005 5 3.45616e+00 1.22841e+00 377 2005 6 3.24028e+00 2.46553e+00 262 2005 7 3.26859e+00 1.43428e+00 290 2005 8 3.75733e+00 9.23085e-01 584 2005 9 3.48542e+00 1.60151e+00 1025 2005 10 3.46080e+00 1.04508e+00 256 2005 11 3.09545e+00 1.14082e+00 395 2005 12 3.01718e+00 6.52792e-01 459 2006 1 2.09742e+00 5.91512e-01 508 2006 2 3.90321e+00 1.26218e+00 399 2006 3 3.71434e+00 8.74186e-01 640 2006 4 4.09107e+00 1.44051e+00 549 2006 5 3.35290e+00 1.08401e+00 144 2006 6 3.55147e+00 1.08881e+00 256 2006 7 3.22986e+00 8.61615e-01 160 2006 8 3.48106e+00 1.51748e+00 673 2006 9 3.03436e+00 1.71332e+00 599 2006 10 3.60643e+00 1.09678e+00 609 2006 11 2.90506e+00 5.24861e-01 236 2006 12 2.49138e+00 4.88814e-01 300 2007 1 2.03130e+00 5.05838e-01 371 2007 2 2.65567e+00 9.54971e-01 704 2007 3 2.94331e+00 7.83341e-01 655 2007 4 2.96783e+00 1.08704e+00 281 2007 5 3.20240e+00 1.15241e+00 530 2007 6 3.24856e+00 1.17094e+00 301 2007 7 3.68706e+00 1.46946e+00 382 2007 8 3.56586e+00 1.55277e+00 513 2007 9 3.22701e+00 1.71428e+00 671 2007 10 2.89173e+00 1.15155e+00 413 2007 11 2.60277e+00 5.67383e-01 452 2007 12 2.81436e+00 4.33408e-01 215 2008 1 2.60515e+00 5.60783e-01 197 2008 2 2.89189e+00 9.90654e-01 459 2008 3 3.18131e+00 9.48809e-01 688 2008 4 2.96268e+00 1.16373e+00 513 2008 5 3.65344e+00 2.00105e+00 414 2008 6 3.46214e+00 1.36879e+00 321 2008 7 4.34650e+00 1.27418e+00 448 2008 8 4.58112e+00 1.67292e+00 494 2008 9 3.34287e+00 2.02679e+00 461 2008 10 3.14357e+00 1.45991e+00 645 2008 11 2.76448e+00 8.10763e-01 410 2008 12 2.84584e+00 6.45996e-01 364 2009 1 3.16384e+00 9.59162e-01 507 2009 2 3.60449e+00 1.31976e+00 423 2009 3 2.19079e+00 9.24394e-01 429 2009 4 3.18504e+00 1.18342e+00 609 2009 5 4.36747e+00 6.61506e-01 127 2009 6 3.57271e+00 6.03657e-01 132 2009 7 3.10207e+00 1.51757e+00 552 2009 8 3.19092e+00 1.90516e+00 408 2009 9 2.75170e+00 1.09617e+00 597 2009 10 2.55918e+00 1.11959e+00 284 2009 11 2.39910e+00 8.47845e-01 299 2009 12 2.72896e+00 6.07592e-01 329 2010 1 2.97600e+00 8.58010e-01 348 2010 2 3.05658e+00 8.91058e-01 576 2010 3 3.42826e+00 9.77338e-01 488 2010 4 2.52667e+00 1.32649e+00 498 2010 5 3.79958e+00 1.07908e+00 491 2010 6 3.02207e+00 1.30446e+00 275 2010 7 3.93419e+00 1.86125e+00 579 2010 8 3.32416e+00 9.81113e-01 519 2010 9 3.40707e+00 1.74902e+00 590 2010 10 2.40880e+00 1.15289e+00 699 2010 11 2.76045e+00 5.28607e-01 270 2010 12 3.37919e+00 7.66850e-01 315 2011 1 3.19307e+00 5.00002e-01 364 2011 2 2.31726e+00 6.89594e-01 386 2011 3 2.21193e+00 6.31971e-01 583 2011 4 3.75035e+00 6.03266e-01 205 2011 5 3.23498e+00 2.11729e+00 361 2011 6 3.96326e+00 1.98769e+00 220 2011 7 4.88888e+00 1.47179e+00 617 2011 8 4.21461e+00 2.39638e+00 803 2011 9 4.45802e+00 1.22932e+00 594 2011 10 2.95449e+00 7.51240e-01 511 2011 11 2.88000e+00 7.19858e-01 399 2011 12 2.78624e+00 6.11878e-01 397 2012 1 4.07361e+00 6.32671e-01 540 2012 2 3.34953e+00 6.47726e-01 499 2012 3 3.81684e+00 1.49209e+00 725 2012 4 3.70989e+00 9.10356e-01 775 2012 5 3.75537e+00 1.21357e+00 455 2012 6 3.37575e+00 1.42346e+00 602 2012 7 3.24588e+00 1.60468e+00 414 2012 8 3.58427e+00 1.32333e+00 421 2012 9 3.33290e+00 1.63573e+00 581 2012 10 3.47364e+00 7.94557e-01 359 2012 11 3.12344e+00 6.33843e-01 428 2012 12 3.93039e+00 9.19697e-01 232 2013 1 3.23448e+00 2.68766e-01 479 2013 2 3.60780e+00 9.75837e-01 429 2013 3 2.46526e+00 8.26255e-01 467 2013 4 3.38826e+00 1.12686e+00 725 2013 5 4.54266e+00 1.61482e+00 330 2013 6 2.94191e+00 1.56232e+00 288 2013 7 4.13764e+00 7.48782e-01 225 2013 8 3.51936e+00 9.33670e-01 499 2013 9 3.36835e+00 1.03649e+00 790 2013 10 3.63620e+00 1.26237e+00 511 2013 11 2.14681e+00 5.98139e-01 458 2013 12 2.90538e+00 4.90418e-01 149 2014 1 3.47413e+00 6.82517e-01 508 2014 2 3.83563e+00 5.98524e-01 417 2014 3 2.39650e+00 1.14335e+00 453 2014 4 2.50205e+00 7.40719e-01 497 2014 5 3.96066e+00 1.26889e+00 677 2014 6 3.50928e+00 1.32620e+00 522 2014 7 3.19864e+00 2.02729e+00 265 2014 8 3.88661e+00 1.20944e+00 533 2014 9 4.16446e+00 9.00045e-01 555 2014 10 3.23395e+00 1.03899e+00 667 2014 11 2.51178e+00 7.68583e-01 408 2014 12 2.98166e+00 2.07269e-01 114 2015 1 3.19204e+00 1.14665e+00 532 2015 2 2.71214e+00 7.89273e-01 297 2015 3 3.25210e+00 9.14212e-01 573 2015 4 3.67551e+00 8.59971e-01 501 2015 5 4.63262e+00 1.55834e+00 326 2015 6 3.79784e+00 1.20041e+00 240 2015 7 4.99415e+00 2.07537e+00 395 2015 8 4.22884e+00 1.57755e+00 644 2015 9 3.56791e+00 1.03840e+00 602 2015 10 2.36898e+00 1.07515e+00 678 2015 11 2.59701e+00 5.59418e-01 597 2015 12 2.47892e+00 4.58398e-01 343 2016 1 2.26627e+00 9.60228e-01 383 2016 2 2.53241e+00 4.95304e-01 489 2016 3 3.74453e+00 8.58215e-01 256 2016 4 3.24411e+00 1.15776e+00 502 2016 5 3.87615e+00 1.85771e+00 298 2016 6 3.25510e+00 1.29413e+00 510 2016 7 4.40206e+00 1.29667e+00 602 2016 8 3.73160e+00 1.16436e+00 825 2016 9 2.69930e+00 1.17071e+00 433 2016 10 3.28938e+00 8.66995e-01 509 2016 11 2.73723e+00 6.45122e-01 566 2016 12 2.02400e+00 2.63394e-01 305 2017 1 3.11673e+00 8.74161e-01 447 2017 2 3.31399e+00 8.10832e-01 455 2017 3 2.87651e+00 9.23235e-01 519 2017 4 3.23234e+00 7.94404e-01 174 2017 5 3.45214e+00 1.89188e+00 164 2017 6 3.47429e+00 1.24772e+00 436 2017 7 3.41722e+00 1.17812e+00 394 2017 8 3.92553e+00 1.17597e+00 454 2017 9 3.77721e+00 1.77803e+00 443 2017 10 2.42668e+00 8.99432e-01 770 2017 11 3.24407e+00 4.78117e-01 238 2017 12 3.23395e+00 6.95555e-01 345 2018 1 3.32229e+00 9.54579e-01 493 2018 2 3.24790e+00 3.29584e-01 231 2018 3 1.68812e+00 1.73737e-01 282 2018 4 1.38805e+00 6.30216e-01 284 2018 5 4.21654e+00 1.88174e+00 415 2018 6 4.04474e+00 9.12750e-01 356 2018 7 3.40815e+00 1.29353e+00 527 2018 8 4.90021e+00 1.06634e+00 442 2018 9 4.23003e+00 1.15867e+00 535 2018 10 2.90157e+00 9.93918e-01 475 2018 11 3.08559e+00 7.78277e-01 427 2018 12 3.40596e+00 6.35641e-01 573 2019 1 3.01130e+00 3.97065e-01 453 2019 2 3.10182e+00 6.81873e-01 466 2019 3 3.26759e+00 8.88962e-01 724 2019 4 3.44138e+00 1.76119e+00 334 2019 5 3.61400e+00 2.30001e+00 293 2019 6 3.91136e+00 6.62498e-01 254 2019 7 3.26958e+00 1.50057e+00 662 2019 8 2.66663e+00 1.47538e+00 368 2019 9 2.61624e+00 1.48128e+00 729 2019 10 2.54308e+00 5.38933e-01 256 2019 11 2.54759e+00 7.13020e-01 411 2019 12 2.38752e+00 9.23689e-01 266 2020 1 2.41203e+00 8.86706e-01 352 2020 2 2.58020e+00 6.62058e-01 599 2020 3 2.24340e+00 4.31346e-01 416 2020 4 2.49709e+00 6.83244e-01 300 2020 5 3.66972e+00 1.23945e+00 439 2020 6 2.99320e+00 1.46360e+00 483 2020 7 4.62626e+00 4.14676e-01 510 2020 8 3.53361e+00 5.63695e-01 318 2020 9 3.14674e+00 1.81954e+00 563 2020 10 3.65526e+00 8.28118e-01 510 2020 11 2.47881e+00 1.17907e+00 566 2020 12 2.15290e+00 1.92965e-01 192 2021 1 2.51577e+00 7.24718e-01 345 2021 2 3.42141e+00 1.09778e+00 294 2021 3 3.03615e+00 7.61102e-01 878 2021 4 2.99241e+00 1.22469e+00 597 2021 5 3.16964e+00 1.41477e+00 800 2021 6 3.97068e+00 1.33025e+00 415 2021 7 3.50537e+00 8.86602e-01 374 2021 8 3.65073e+00 1.18058e+00 404 2021 9 2.57206e+00 1.28003e+00 567 2021 10 3.36857e+00 1.33447e+00 426 2021 11 2.49203e+00 8.53550e-01 686 2021 12 2.99616e+00 1.28203e+00 200 2022 1 3.55393e+00 4.92385e-01 256 2022 2 3.59132e+00 7.28842e-01 556 2022 3 3.12695e+00 1.06483e+00 540 2022 4 3.06091e+00 1.19571e+00 172 2022 5 3.97417e+00 1.42362e+00 320 2022 6 3.45741e+00 1.51912e+00 483 2022 7 4.78570e+00 1.48701e+00 742 2022 8 5.08643e+00 1.50662e+00 720 2022 9 3.05177e+00 1.28578e+00 589 2022 10 3.52855e+00 1.32584e+00 562 2022 11 3.19823e+00 9.32507e-01 798 2022 12 3.05184e+00 9.29906e-01 558 2023 1 4.32037e+00 1.22658e+00 438 2023 2 4.43064e+00 1.13527e+00 313 2023 3 3.39423e+00 1.65197e+00 654 2023 4 4.16289e+00 1.69402e+00 488 2023 5 3.55433e+00 1.51811e+00 538 2023 6 3.10456e+00 1.50554e+00 349 2023 7 3.77556e+00 1.62539e+00 644 2023 8 2.93730e+00 1.35587e+00 531 2023 9 4.79433e+00 1.83345e+00 542 2023 10 4.07016e+00 1.03995e+00 531 2023 11 1.95679e+00 6.93698e-01 425 2023 12 2.45225e+00 5.08764e-01 383 2024 1 2.92192e+00 1.41563e+00 393 2024 2 2.60198e+00 7.52286e-01 557 2024 3 3.40021e+00 1.10102e+00 712 2024 4 nan nan 0