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 1.98755e+01 5.91467e+00 245 2002 8 2.31657e+01 8.04444e+00 512 2002 9 1.49974e+01 5.35777e+00 349 2002 10 1.67840e+01 8.22278e+00 756 2002 11 9.21512e+00 4.86655e+00 645 2002 12 1.11860e+01 6.51595e+00 627 2003 1 7.84026e+00 5.77855e+00 898 2003 2 9.15349e+00 5.54972e+00 448 2003 3 1.85864e+00 7.97494e-01 64 2003 4 1.78527e+00 2.70729e+00 20 2003 5 4.50068e+00 4.60787e+00 242 2003 6 9.15973e+00 7.02061e+00 257 2003 7 2.40258e+01 1.95784e+01 343 2003 8 1.55328e+01 1.49799e+01 405 2003 9 2.13756e+01 1.17659e+01 368 2003 10 1.38357e+01 1.48477e+01 960 2003 11 7.96339e+00 6.88881e+00 960 2003 12 1.33751e+01 9.24749e+00 770 2004 1 1.00859e+01 6.41559e+00 826 2004 2 1.14030e+01 5.85234e+00 384 2004 3 7.22043e+00 8.05754e+00 611 2004 4 1.00409e+01 3.88470e+00 381 2004 5 1.48624e+01 5.83614e+00 689 2004 6 1.78609e+01 5.97379e+00 446 2004 7 1.06766e+01 6.14659e+00 406 2004 8 1.51870e+01 9.97627e+00 512 2004 9 1.62469e+01 1.62741e+01 155 2004 10 4.71765e-01 5.04731e-01 151 2004 11 1.02858e-01 1.78846e-01 314 2004 12 6.07570e-01 6.86559e-01 390 2005 1 2.54896e+00 3.72150e+00 746 2005 2 2.04033e+00 2.79359e+00 558 2005 3 2.22307e+00 1.87151e+00 384 2005 4 1.44699e+01 2.39230e+01 334 2005 5 4.07191e+01 1.27107e+01 152 2005 6 2.06169e+01 1.10650e+01 321 2005 7 1.72779e+01 9.78474e+00 416 2005 8 3.34096e+00 5.58865e+00 191 2005 9 1.32252e+01 1.23896e+01 361 2005 10 1.58208e+01 9.39876e+00 951 2005 11 7.41643e+00 5.27643e+00 1023 2005 12 7.13607e+00 5.28653e+00 1068 2006 1 3.63687e+00 4.77520e+00 693 2006 2 3.25224e+00 4.15100e+00 762 2006 3 6.45024e+00 9.81739e+00 1091 2006 4 4.31115e+00 4.66801e+00 273 2006 5 1.78317e+01 6.53379e+00 430 2006 6 1.94243e+01 8.65976e+00 478 2006 7 1.22948e+01 8.35070e+00 422 2006 8 1.36911e+01 4.01190e+00 423 2006 9 1.77516e+01 8.08411e+00 864 2006 10 1.58554e+01 9.57055e+00 931 2006 11 1.34650e+01 8.70111e+00 850 2006 12 1.99600e+01 6.36432e+00 537 2007 1 1.95440e+01 8.27554e+00 440 2007 2 2.01175e+01 1.02306e+01 657 2007 3 1.77196e+01 9.82812e+00 1021 2007 4 1.99164e+01 1.18371e+01 640 2007 5 2.32013e+01 6.69264e+00 340 2007 6 2.05604e+01 5.74810e+00 348 2007 7 1.81109e+01 7.73199e+00 499 2007 8 2.13384e+01 7.92561e+00 596 2007 9 2.00701e+01 6.91061e+00 530 2007 10 1.35526e+01 5.63066e+00 761 2007 11 1.68576e+01 8.92096e+00 1065 2007 12 1.50979e+01 8.97653e+00 875 2008 1 1.50272e+01 8.80882e+00 708 2008 2 1.73554e+01 6.76042e+00 708 2008 3 2.05572e+00 2.79201e+00 668 2008 4 2.00698e+01 2.26519e+01 637 2008 5 5.72746e+00 6.24565e+00 571 2008 6 1.49915e+01 1.11257e+01 468 2008 7 1.20695e+01 6.78873e+00 448 2008 8 1.15428e+01 5.10396e+00 315 2008 9 2.09432e+01 1.47439e+01 584 2008 10 7.20721e+00 6.04046e+00 1009 2008 11 1.33374e+01 6.78422e+00 960 2008 12 5.80451e+00 5.90221e+00 1080 2009 1 9.41562e+00 6.28800e+00 704 2009 2 7.93004e+00 4.04591e+00 939 2009 3 1.29895e+01 8.24320e+00 1001 2009 4 1.31310e+01 1.02626e+01 374 2009 5 8.84756e+00 8.72315e+00 289 2009 6 1.84805e+01 1.21276e+01 482 2009 7 3.40518e+01 1.41856e+01 79 2009 8 2.09419e+01 1.43023e+01 641 2009 9 2.19610e+01 1.16284e+01 795 2009 10 1.39770e+01 1.10533e+01 797 2009 11 1.55709e+01 7.79355e+00 838 2009 12 9.96146e+00 1.04063e+01 234 2010 1 7.23582e+00 4.85724e+00 842 2010 2 2.92756e+00 1.76205e+00 703 2010 3 1.41990e+00 1.21526e+00 889 2010 4 3.03536e+00 5.05317e+00 267 2010 5 1.45287e+01 1.51732e+01 580 2010 6 1.69636e+01 4.30558e+00 615 2010 7 1.65043e+01 7.64170e+00 401 2010 8 1.48492e+01 5.42289e+00 254 2010 9 1.42467e+01 9.24152e+00 657 2010 10 1.54378e+01 6.20919e+00 1536 2010 11 1.25434e+01 7.06312e+00 1214 2010 12 1.68377e+01 1.15038e+01 1088 2011 1 1.85134e+01 9.39190e+00 731 2011 2 2.49985e+01 4.16732e+00 640 2011 3 2.44384e+01 7.25910e+00 892 2011 4 1.77528e+01 9.66532e+00 920 2011 5 1.79896e+01 7.60750e+00 772 2011 6 1.56434e+01 7.19153e+00 256 2011 7 2.14028e+01 6.13964e+00 442 2011 8 2.10522e+01 8.82803e+00 448 2011 9 1.94449e+01 8.04622e+00 767 2011 10 1.78957e+01 9.15354e+00 917 2011 11 2.35499e+01 7.29416e+00 1056 2011 12 2.52912e+01 7.61915e+00 921 2012 1 2.52951e+01 1.05137e+01 932 2012 2 2.72079e+01 8.49815e+00 256 2012 3 2.83362e+01 8.61165e+00 893 2012 4 2.11074e+01 7.84374e+00 946 2012 5 2.12767e+01 8.24161e+00 454 2012 6 1.55848e+01 9.32744e+00 177 2012 7 1.48900e+01 1.33407e+01 303 2012 8 9.80097e+00 1.25935e+01 345 2012 9 1.40557e+01 1.80029e+01 344 2012 10 6.77071e-01 4.99889e-01 557 2012 11 1.37721e+01 9.40431e+00 856 2012 12 6.16007e+00 4.40447e+00 716 2013 1 1.14936e+01 6.11141e+00 704 2013 2 1.41164e+01 3.99360e+00 448 2013 3 9.92640e+00 7.79997e+00 784 2013 4 1.18760e+01 1.91754e+01 403 2013 5 9.63303e+00 1.07552e+01 503 2013 6 1.41318e+01 1.31790e+01 350 2013 7 7.26069e+00 9.89762e+00 141 2013 8 1.28864e+01 1.11918e+01 245 2013 9 7.48026e+00 1.17248e+01 430 2013 10 1.17486e+01 1.14372e+01 837 2013 11 6.94528e+00 7.60049e+00 436 2013 12 7.87322e+00 4.24250e+00 768 2014 1 4.83872e+00 4.74052e+00 512 2014 2 5.71546e+00 3.86784e+00 700 2014 3 4.48907e+00 5.55188e+00 579 2014 4 2.46834e+00 2.27712e+00 248 2014 5 4.64834e+00 1.32707e+01 139 2014 6 1.51698e+01 1.98670e+01 333 2014 7 1.30064e+01 7.74283e+00 497 2014 8 1.05943e+01 4.77932e+00 320 2014 9 2.33927e+01 1.74251e+01 423 2014 10 7.41227e+00 1.07886e+01 1216 2014 11 1.02584e+01 5.69946e+00 896 2014 12 1.26773e+01 8.22864e+00 715 2015 1 5.99143e+00 5.52455e+00 676 2015 2 7.13382e+00 8.30756e+00 761 2015 3 1.06124e+01 1.39778e+01 357 2015 4 1.76299e+01 2.04492e+01 223 2015 5 1.59754e+01 1.02980e+01 676 2015 6 2.16827e+01 7.52560e+00 358 2015 7 4.07730e+00 1.86159e+00 122 2015 8 9.90651e+00 7.51829e+00 373 2015 9 1.55075e+01 9.29424e+00 280 2015 10 7.77193e+00 5.48303e+00 795 2015 11 8.36223e+00 7.33070e+00 880 2015 12 9.30661e+00 5.77784e+00 435 2016 1 6.06148e+00 5.49639e+00 687 2016 2 5.07827e+00 6.28202e+00 1071 2016 3 6.82029e+00 4.03327e+00 576 2016 4 1.67097e+01 1.88455e+01 384 2016 5 1.06076e+01 6.11969e+00 699 2016 6 1.75946e+01 1.03750e+01 700 2016 7 1.61482e+01 4.41720e+00 697 2016 8 1.60657e+01 6.48704e+00 541 2016 9 1.02335e+01 7.40702e+00 641 2016 10 1.47438e+01 9.75068e+00 994 2016 11 1.35494e+01 6.09439e+00 896 2016 12 1.58276e+01 6.40450e+00 867 2017 1 1.25475e+01 8.95636e+00 654 2017 2 6.38320e+00 6.48135e+00 852 2017 3 1.26052e+01 8.00809e+00 971 2017 4 1.91501e+01 4.70992e+00 768 2017 5 1.60486e+01 7.87027e+00 544 2017 6 2.56313e+01 7.16019e+00 180 2017 7 7.72562e+00 1.01044e+01 121 2017 8 1.41065e+01 1.12523e+01 602 2017 9 1.77988e+01 1.54810e+01 324 2017 10 4.69804e+00 7.84061e+00 271 2017 11 7.90487e+00 8.73727e+00 1063 2017 12 9.16728e+00 5.86758e+00 576 2018 1 1.45971e+01 6.51255e+00 704 2018 2 2.27770e+01 5.28171e+00 575 2018 3 1.82712e+01 9.10409e+00 963 2018 4 1.52196e+01 9.85353e+00 602 2018 5 1.74613e+01 9.58574e+00 392 2018 6 1.30874e+01 6.50666e+00 256 2018 7 2.66560e+01 2.40241e+01 118 2018 8 2.64936e+01 1.83774e+01 423 2018 9 2.24810e+01 1.57595e+01 997 2018 10 9.64039e+00 8.88669e+00 1043 2018 11 6.26007e+00 5.53978e+00 446 2018 12 5.09387e+00 5.81927e+00 541 2019 1 5.84051e+00 1.50986e+01 629 2019 2 4.42638e+00 5.40917e+00 161 2019 3 5.31012e+00 7.07004e+00 776 2019 4 5.15525e+00 4.71927e+00 507 2019 5 1.42622e+01 6.85753e+00 799 2019 6 1.77973e+01 7.18578e+00 187 2019 7 2.09339e+01 1.04330e+01 294 2019 8 1.66909e+01 1.24401e+01 500 2019 9 1.44162e+01 9.93836e+00 832 2019 10 1.17905e+01 9.76137e+00 667 2019 11 1.25987e+01 6.39134e+00 768 2019 12 1.19503e+01 7.96086e+00 513 2020 1 1.31350e+01 6.65943e+00 784 2020 2 8.49924e+00 7.13226e+00 665 2020 3 1.14248e+01 1.13690e+01 533 2020 4 3.28130e+00 2.66406e+00 468 2020 5 8.32398e+00 6.81469e+00 480 2020 6 1.10048e+01 6.06964e+00 385 2020 7 2.25934e+01 1.59153e+01 273 2020 8 6.35781e+00 6.47055e+00 250 2020 9 8.25691e+00 8.24742e+00 272 2020 10 8.59761e+00 9.63405e+00 743 2020 11 1.36385e+00 1.61237e+00 864 2020 12 4.69945e+00 4.77891e+00 918 2021 1 3.06579e+00 2.27960e+00 506 2021 2 2.96489e+00 3.95515e+00 640 2021 3 1.96024e-01 1.23126e+00 130 2021 4 7.69373e-01 9.89914e-01 338 2021 5 4.85320e+00 4.30225e+00 715 2021 6 2.34529e+01 9.81599e+00 197 2021 7 2.33666e+01 1.45412e+01 216 2021 8 2.62884e+01 2.35494e+01 380 2021 9 1.44432e+01 2.18801e+01 340 2021 10 4.77589e+00 8.06234e+00 288 2021 11 2.55917e+00 3.04851e+00 772 2021 12 5.79151e+00 8.24566e+00 717 2022 1 2.17974e+00 2.23851e+00 819 2022 2 8.42087e+00 4.73646e+00 911 2022 3 6.53804e+00 4.71252e+00 958 2022 4 7.96590e+00 1.24306e+00 64 2022 5 1.16884e+01 7.58865e+00 455 2022 6 1.60931e+01 9.31994e+00 456 2022 7 1.59933e+01 6.72178e+00 501 2022 8 2.16444e+01 9.09308e+00 618 2022 9 9.91182e+00 1.24300e+01 210 2022 10 1.00527e+01 6.06898e+00 1155 2022 11 1.29582e+01 8.83077e+00 516 2022 12 1.14505e+01 5.98378e+00 832 2023 1 1.64246e+01 8.49569e+00 928 2023 2 1.53630e+01 7.65346e+00 630 2023 3 1.28833e+01 5.27178e+00 614 2023 4 1.94697e+01 1.05825e+01 384 2023 5 1.77696e+01 1.02080e+01 391 2023 6 1.73540e+01 7.35595e+00 312 2023 7 1.31392e+01 9.99787e+00 512 2023 8 1.09244e+01 1.06131e+01 406 2023 9 1.05117e+01 1.25169e+01 467 2023 10 1.25163e+01 1.05027e+01 556 2023 11 9.16214e+00 6.29939e+00 697 2023 12 8.65188e+00 5.10187e+00 239 2024 1 3.36359e-01 6.00338e-01 378 2024 2 3.98395e+00 5.63133e+00 550 2024 3 6.84676e+00 7.92420e+00 512 2024 4 nan nan 0