YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.34484e+00 3.27627e-01 61 2000 3 2.62921e+00 7.45849e-01 209 2000 4 3.63790e+00 3.77371e-01 207 2000 5 5.05601e+00 6.95874e-01 119 2000 6 1.40362e+01 2.56873e+00 257 2000 7 1.88775e+01 1.18788e+00 1078 2000 8 2.08026e+01 7.13490e-01 1033 2000 9 1.98353e+01 2.21795e+00 833 2000 10 1.44700e+01 1.05030e+00 951 2000 11 1.22581e+01 8.51345e-01 600 2000 12 6.80896e+00 7.28983e-01 53 2001 1 3.01837e+00 1.63375e+00 156 2001 2 1.68082e+00 2.88396e-01 159 2001 3 1.55898e+00 4.29486e-01 387 2001 4 2.76364e+00 7.82842e-01 508 2001 5 4.97984e+00 5.54400e-01 216 2001 6 8.78300e+00 1.80824e+00 10 2001 7 2.06866e+01 1.71290e+00 849 2001 8 2.28500e+01 9.84904e-01 2044 2001 9 2.09703e+01 9.86529e-01 1504 2001 10 1.51251e+01 2.81194e+00 702 2001 11 1.06862e+01 1.25387e+00 540 2001 12 9.31595e+00 5.81406e-01 441 2002 1 4.57494e+00 1.33289e+00 264 2002 2 3.60003e+00 8.08190e-01 383 2002 3 2.72605e+00 7.31254e-01 76 2002 4 3.55823e+00 1.36379e+00 648 2002 5 5.56045e+00 9.27598e-01 667 2002 6 1.60316e+01 3.10901e+00 404 2002 7 2.04364e+01 1.41985e+00 2925 2002 8 2.27417e+01 9.62658e-01 3773 2002 9 2.14190e+01 1.05748e+00 3747 2002 10 1.62493e+01 2.58901e+00 1356 2002 11 8.45109e+00 1.08356e+00 525 2002 12 5.53357e+00 7.85517e-01 729 2003 1 6.66928e-01 8.16768e-01 166 2003 2 1.20152e+00 3.31629e-01 125 2003 3 9.33808e-01 8.54868e-02 130 2003 4 1.83864e+00 4.14628e-01 409 2003 5 3.29060e+00 4.97870e-01 193 2003 6 1.48819e+01 4.45761e+00 443 2003 7 1.87566e+01 1.49879e+00 2588 2003 8 2.27174e+01 1.19916e+00 3520 2003 9 2.02172e+01 1.02886e+00 3408 2003 10 1.30438e+01 1.47822e+00 1159 2003 11 8.21874e+00 1.49893e+00 685 2003 12 6.25409e+00 7.19316e-01 557 2004 1 5.08500e+00 1.86112e-01 8 2004 2 1.21590e+00 2.24707e-01 426 2004 3 1.54110e+00 2.42011e-01 301 2004 4 2.30742e+00 7.18019e-01 688 2004 5 6.11066e+00 1.96728e+00 113 2004 6 1.36752e+01 1.29477e+00 1368 2004 7 1.86032e+01 2.17663e+00 1811 2004 8 2.09279e+01 6.26164e-01 2313 2004 9 1.92477e+01 1.35811e+00 3807 2004 10 1.56796e+01 1.76593e+00 1420 2004 11 8.63179e+00 1.29067e+00 1246 2004 12 7.04737e+00 9.20798e-01 135 2005 1 4.31491e+00 2.50216e-01 525 2005 2 3.43980e+00 7.73043e-01 649 2005 3 1.27419e+00 4.32598e-01 731 2005 4 3.11346e+00 5.29655e-01 904 2005 5 4.46924e+00 1.87305e+00 871 2005 6 1.90937e+01 2.67735e+00 1669 2005 7 2.20554e+01 2.38997e+00 3297 2005 8 2.37293e+01 9.14617e-01 3549 2005 9 2.10380e+01 1.05787e+00 3707 2005 10 1.45722e+01 2.38655e+00 1058 2005 11 9.74673e+00 8.23803e-01 1016 2005 12 5.56447e+00 1.55823e+00 295 2006 1 4.72244e+00 3.94955e-01 449 2006 2 3.69961e+00 7.77990e-01 207 2006 3 1.90803e+00 6.16654e-01 1254 2006 4 3.51681e+00 4.51247e-01 984 2006 5 6.11679e+00 1.37907e+00 538 2006 6 1.53038e+01 2.50103e+00 1490 2006 7 2.08517e+01 2.17622e+00 3496 2006 8 2.33152e+01 1.20132e+00 3630 2006 9 1.79241e+01 2.17883e+00 1278 2006 10 1.42360e+01 1.75432e+00 1242 2006 11 9.79060e+00 5.30306e-01 1242 2006 12 6.95831e+00 7.06559e-01 494 2007 1 5.53580e+00 7.76113e-01 461 2007 2 2.03449e+00 3.51061e-01 316 2007 3 1.51341e+00 3.46393e-01 276 2007 4 2.21398e+00 5.89665e-01 318 2007 5 3.66654e+00 5.46795e-01 518 2007 6 1.60956e+01 2.20272e+00 1466 2007 7 1.98579e+01 2.27069e+00 3262 2007 8 2.22610e+01 1.95508e+00 3872 2007 9 1.94598e+01 1.42631e+00 2366 2007 10 1.57993e+01 2.01073e+00 1338 2007 11 1.17049e+01 1.71745e+00 908 2007 12 5.96566e+00 9.75645e-01 213 2008 1 4.08054e+00 4.03512e-01 467 2008 2 1.81013e+00 4.89864e-01 475 2008 3 1.29495e+00 6.80089e-01 554 2008 4 2.58874e+00 5.80547e-01 591 2008 5 5.61176e+00 2.11433e+00 812 2008 6 1.55104e+01 1.92316e+00 1142 2008 7 2.06589e+01 1.43658e+00 3573 2008 8 2.20854e+01 6.41318e-01 3297 2008 9 1.95113e+01 2.37677e+00 2857 2008 10 1.36969e+01 1.74138e+00 1803 2008 11 9.02894e+00 1.07147e+00 605 2008 12 5.87653e+00 5.44022e-01 259 2009 1 4.39882e+00 6.72906e-01 344 2009 2 8.91057e-01 3.28136e-01 265 2009 3 1.66258e+00 5.17697e-01 584 2009 4 2.54186e+00 5.52090e-01 760 2009 5 3.69747e+00 6.56425e-01 529 2009 6 1.40830e+01 2.76453e+00 621 2009 7 1.72428e+01 1.79051e+00 2181 2009 8 2.24943e+01 1.57138e+00 4072 2009 9 2.04189e+01 9.56568e-01 3757 2009 10 1.30489e+01 1.03462e+00 1068 2009 11 1.01708e+01 9.96962e-01 1521 2009 12 5.94700e+00 1.37529e+00 155 2010 1 3.76800e+00 8.41479e-01 263 2010 2 1.53883e+00 3.12335e-01 290 2010 3 2.56937e+00 7.92704e-01 995 2010 4 3.90748e+00 3.87273e-01 956 2010 5 7.48745e+00 3.50988e+00 400 2010 6 1.58843e+01 1.20406e+00 1460 2010 7 2.18511e+01 1.96348e+00 2955 2010 8 2.26783e+01 1.05528e+00 3424 2010 9 2.03041e+01 2.14931e+00 2102 2010 10 1.53385e+01 1.31094e+00 1955 2010 11 1.11936e+01 1.54487e+00 1596 2010 12 6.09152e+00 3.71894e-01 210 2011 1 3.84172e+00 1.06349e+00 335 2011 2 2.84115e+00 1.17363e+00 624 2011 3 1.84569e+00 5.16160e-01 1102 2011 4 2.62317e+00 9.47450e-01 432 2011 5 4.02245e+00 4.13985e-01 231 2011 6 1.49929e+01 2.56918e+00 1118 2011 7 2.19137e+01 2.00918e+00 3592 2011 8 2.24241e+01 1.25046e+00 3024 2011 9 2.05343e+01 1.13144e+00 2762 2011 10 1.56485e+01 2.45855e+00 1265 2011 11 1.11644e+01 1.09900e+00 1105 2011 12 8.22645e+00 7.76072e-01 777 2012 1 5.96545e+00 6.18128e-01 343 2012 2 3.48111e+00 9.65948e-01 750 2012 3 3.66310e+00 6.71908e-01 342 2012 4 4.69919e+00 4.03016e-01 1560 2012 5 1.30657e+01 3.91157e+00 1049 2012 6 1.68146e+01 2.93875e+00 2103 2012 7 2.28819e+01 1.94074e+00 4229 2012 8 2.37688e+01 9.65918e-01 4618 2012 9 2.14964e+01 1.85626e+00 3677 2012 10 1.58993e+01 1.40149e+00 761 2012 11 1.00943e+01 1.09048e+00 1222 2012 12 7.29628e+00 5.23016e-01 573 2013 1 4.47166e+00 9.67786e-01 443 2013 2 3.04374e+00 9.27973e-01 218 2013 3 2.08062e+00 5.65525e-01 798 2013 4 3.05245e+00 6.67717e-01 906 2013 5 6.04846e+00 1.58313e+00 812 2013 6 1.42069e+01 3.31849e+00 1614 2013 7 2.24810e+01 1.96085e+00 2684 2013 8 2.15068e+01 8.16858e-01 4149 2013 9 2.00323e+01 1.53933e+00 2970 2013 10 1.75866e+01 1.65814e+00 1834 2013 11 9.17755e+00 2.23554e+00 586 2013 12 5.49755e+00 6.17737e-01 94 2014 1 3.86801e+00 1.34040e+00 128 2014 2 nan nan 0 2014 3 2.30150e-01 1.63707e-01 233 2014 4 8.94550e-01 7.73273e-01 767 2014 5 2.84195e+00 1.09436e+00 333 2014 6 1.26775e+01 5.21207e+00 160 2014 7 1.89071e+01 1.58383e+00 2968 2014 8 1.98189e+01 1.39680e+00 3701 2014 9 1.86438e+01 1.84387e+00 3159 2014 10 1.47432e+01 2.01013e+00 1203 2014 11 1.01434e+01 1.95020e+00 268 2014 12 6.20448e+00 1.28022e+00 553 2015 1 2.14055e+00 4.72567e-01 293 2015 2 nan nan 0 2015 3 6.71344e-01 2.05532e-01 305 2015 4 1.45840e+00 5.94404e-01 322 2015 5 3.67671e+00 4.29748e-01 477 2015 6 1.38641e+01 1.83944e+00 195 2015 7 1.92216e+01 2.38271e+00 2904 2015 8 2.14310e+01 1.02443e+00 3716 2015 9 2.16399e+01 1.39606e+00 2990 2015 10 1.29755e+01 2.59806e+00 1035 2015 11 9.84221e+00 1.40166e+00 1400 2015 12 8.37856e+00 3.39891e-01 267 2016 1 5.48552e+00 1.23916e+00 639 2016 2 4.36636e+00 6.88771e-01 286 2016 3 3.54415e+00 8.39560e-01 1236 2016 4 3.97983e+00 5.89882e-01 1155 2016 5 6.17870e+00 1.72414e+00 761 2016 6 1.59611e+01 3.19885e+00 1964 2016 7 2.10294e+01 2.01257e+00 3504 2016 8 2.35464e+01 1.13955e+00 3954 2016 9 2.27374e+01 8.56127e-01 3686 2016 10 1.83650e+01 1.59803e+00 2015 2016 11 1.15117e+01 1.34200e+00 1489 2016 12 7.51366e+00 1.15400e+00 291 2017 1 5.08399e+00 8.10943e-01 397 2017 2 3.20961e+00 7.62815e-01 283 2017 3 2.97347e+00 4.57244e-01 478 2017 4 3.90600e+00 6.08774e-01 694 2017 5 6.27644e+00 2.24071e+00 378 2017 6 1.49930e+01 3.03193e+00 1457 2017 7 2.09592e+01 1.45427e+00 2761 2017 8 2.16244e+01 1.47356e+00 3562 2017 9 2.08438e+01 1.21875e+00 3924 2017 10 1.69306e+01 1.70633e+00 2253 2017 11 9.87605e+00 1.44168e+00 929 2017 12 7.48889e+00 1.13185e+00 442 2018 1 2.03012e+00 1.01419e+00 43 2018 2 1.20851e+00 6.91541e-01 168 2018 3 2.18660e+00 4.56693e-01 999 2018 4 2.62680e+00 5.76332e-01 483 2018 5 7.39513e+00 1.75345e+00 116 2018 6 1.51087e+01 1.58069e+00 716 2018 7 2.20347e+01 1.22811e+00 3205 2018 8 2.37802e+01 9.17241e-01 3347 2018 9 2.14468e+01 2.45874e+00 2792 2018 10 1.29542e+01 1.51994e+00 570 2018 11 7.00794e+00 6.30475e-01 90 2018 12 5.78331e+00 1.00389e+00 564 2019 1 4.89446e+00 7.13206e-01 322 2019 2 1.35355e+00 2.35716e-01 224 2019 3 1.09952e+00 6.52196e-01 364 2019 4 2.15355e+00 4.11339e-01 464 2019 5 3.78973e+00 3.67992e-01 168 2019 6 1.34998e+01 5.01189e+00 545 2019 7 2.10186e+01 1.66763e+00 2833 2019 8 2.21098e+01 9.93016e-01 4444 2019 9 1.90068e+01 6.86644e-01 2748 2019 10 1.51008e+01 2.34833e+00 2284 2019 11 7.57056e+00 9.88557e-01 797 2019 12 5.78198e+00 5.89694e-01 844 2020 1 4.32150e+00 6.70504e-01 628 2020 2 2.87615e+00 6.04483e-01 924 2020 3 2.79325e+00 6.24156e-01 1573 2020 4 3.43329e+00 5.55248e-01 2245 2020 5 7.49772e+00 3.51322e+00 1869 2020 6 1.63181e+01 3.02697e+00 4621 2020 7 2.27793e+01 1.53240e+00 4050 2020 8 2.34393e+01 1.16612e+00 2665 2020 9 1.99271e+01 1.12222e+00 2739 2020 10 1.57121e+01 1.19464e+00 1537 2020 11 1.03868e+01 1.24406e+00 1005 2020 12 7.64945e+00 8.42820e-01 716 2021 1 5.15438e+00 7.74004e-01 527 2021 2 3.63267e+00 7.53820e-01 1036 2021 3 2.44572e+00 4.32346e-01 2428 2021 4 3.42612e+00 5.80682e-01 2078 2021 5 7.47173e+00 2.78449e+00 2977 2021 6 1.57584e+01 2.77131e+00 2431 2021 7 2.06712e+01 1.34775e+00 3463 2021 8 2.34068e+01 1.39002e+00 3198 2021 9 2.18608e+01 1.39435e+00 2885 2021 10 1.67148e+01 1.86765e+00 1319 2021 11 1.16168e+01 1.41665e+00 1683 2021 12 8.19731e+00 5.69526e-01 1013 2022 1 4.97355e+00 8.87310e-01 1064 2022 2 3.55310e+00 9.34055e-01 688 2022 3 1.92376e+00 9.93388e-01 1444 2022 4 3.54825e+00 7.66391e-01 1867 2022 5 9.04948e+00 3.64943e+00 1215 2022 6 1.50890e+01 2.56723e+00 3314 2022 7 2.12539e+01 1.39357e+00 3787 2022 8 2.39178e+01 7.41478e-01 3456 2022 9 2.13401e+01 1.60758e+00 2626 2022 10 1.40658e+01 1.54232e+00 1930 2022 11 1.18220e+01 1.85887e+00 1890 2022 12 6.67285e+00 7.97257e-01 560 2023 1 4.70195e+00 2.95890e-01 614 2023 2 3.18870e+00 5.79881e-01 847 2023 3 2.99534e+00 5.99959e-01 1608 2023 4 3.91670e+00 1.21385e+00 2425 2023 5 8.94121e+00 3.26399e+00 3180 2023 6 1.51109e+01 2.36802e+00 2650 2023 7 2.15396e+01 1.04151e+00 3528 2023 8 2.18160e+01 8.67415e-01 3004 2023 9 2.07912e+01 1.09192e+00 3993 2023 10 1.74846e+01 2.86275e+00 1749 2023 11 1.10192e+01 8.99400e-01 1373 2023 12 7.33267e+00 5.31894e-01 498 2024 1 5.51326e+00 8.95207e-01 322 2024 2 3.86082e+00 5.43456e-01 2128 2024 3 3.81644e+00 6.15776e-01 1909 2024 4 3.21820e+00 7.44938e-01 122