YEAR MONTH MEAN STDEV COUNT 2000 1 nan nan 0 2000 2 2.09891e+01 4.20329e-01 192 2000 3 2.30761e+01 8.26321e-01 751 2000 4 2.44392e+01 7.76472e-01 832 2000 5 2.65927e+01 1.05288e+00 732 2000 6 2.84042e+01 6.59454e-01 320 2000 7 3.03576e+01 1.68853e+00 312 2000 8 2.95442e+01 8.30743e-01 116 2000 9 2.89308e+01 1.19813e+00 420 2000 10 2.70374e+01 1.43823e+00 1000 2000 11 2.47079e+01 7.47054e-01 816 2000 12 2.18163e+01 8.92124e-01 530 2001 1 1.91385e+01 1.24070e+00 662 2001 2 1.99794e+01 9.17902e-01 514 2001 3 2.29793e+01 8.05845e-01 651 2001 4 2.41186e+01 1.25911e+00 768 2001 5 2.52149e+01 1.45225e+00 471 2001 6 2.82410e+01 4.62148e-01 224 2001 7 2.82268e+01 1.23759e+00 569 2001 8 2.95189e+01 9.43499e-01 461 2001 9 2.85951e+01 5.60917e-01 387 2001 10 2.78278e+01 5.54874e-01 521 2001 11 2.34905e+01 5.28687e-01 813 2001 12 2.37368e+01 5.70350e-01 810 2002 1 2.20922e+01 1.03636e+00 568 2002 2 2.17351e+01 2.95622e-01 530 2002 3 2.20420e+01 1.26742e+00 553 2002 4 2.53582e+01 1.12435e+00 935 2002 5 2.65622e+01 5.09884e-01 890 2002 6 2.80030e+01 5.45364e-01 316 2002 7 2.93016e+01 1.25708e+00 1892 2002 8 2.97837e+01 1.15705e+00 1459 2002 9 2.93888e+01 1.12369e+00 1324 2002 10 2.87324e+01 7.44883e-01 3412 2002 11 2.63706e+01 2.09904e+00 2266 2002 12 2.21178e+01 9.26622e-01 2402 2003 1 1.90563e+01 1.28392e+00 2240 2003 2 1.94052e+01 1.29972e+00 2451 2003 3 2.42164e+01 1.06517e+00 2578 2003 4 2.29815e+01 1.10187e+00 2840 2003 5 2.72301e+01 1.43738e+00 3488 2003 6 2.93037e+01 1.05739e+00 1351 2003 7 2.89936e+01 9.61755e-01 1950 2003 8 2.96839e+01 1.24178e+00 1492 2003 9 2.98341e+01 6.75173e-01 1725 2003 10 2.85885e+01 1.05980e+00 2889 2003 11 2.49116e+01 9.55539e-01 2924 2003 12 2.09142e+01 1.43710e+00 2141 2004 1 1.98371e+01 4.98486e-01 2958 2004 2 2.03704e+01 6.39648e-01 1927 2004 3 2.18427e+01 6.89600e-01 2967 2004 4 2.31467e+01 7.96128e-01 3033 2004 5 2.55702e+01 1.35602e+00 3318 2004 6 2.87484e+01 9.84782e-01 2638 2004 7 2.87489e+01 1.28094e+00 2028 2004 8 2.97042e+01 1.30805e+00 2111 2004 9 2.93059e+01 9.96967e-01 1993 2004 10 2.77630e+01 8.70412e-01 2930 2004 11 2.51932e+01 1.03337e+00 3334 2004 12 2.24601e+01 1.71027e+00 2512 2005 1 2.00695e+01 6.72140e-01 3074 2005 2 1.97776e+01 7.30173e-01 2992 2005 3 2.15981e+01 1.44432e+00 2385 2005 4 2.38435e+01 7.64814e-01 3138 2005 5 2.54069e+01 1.27149e+00 3325 2005 6 2.79735e+01 1.26834e+00 1349 2005 7 2.92485e+01 1.24549e+00 2159 2005 8 3.06473e+01 1.37150e+00 1737 2005 9 2.90460e+01 1.06107e+00 2457 2005 10 2.76373e+01 1.11773e+00 1615 2005 11 2.45023e+01 6.06128e-01 2773 2005 12 2.26752e+01 1.14196e+00 2599 2006 1 2.10312e+01 6.81440e-01 2784 2006 2 2.07043e+01 9.79547e-01 2967 2006 3 2.20246e+01 1.37716e+00 3439 2006 4 2.45713e+01 1.65797e+00 3789 2006 5 2.67965e+01 1.06237e+00 2692 2006 6 2.87996e+01 8.37513e-01 2538 2006 7 2.86830e+01 1.06253e+00 1868 2006 8 2.98887e+01 9.74603e-01 2063 2006 9 3.02214e+01 1.05227e+00 2851 2006 10 2.85567e+01 1.12230e+00 2834 2006 11 2.37434e+01 1.35711e+00 2149 2006 12 2.22747e+01 6.54191e-01 1933 2007 1 2.25387e+01 7.72171e-01 3117 2007 2 2.08338e+01 9.14091e-01 1977 2007 3 2.19496e+01 7.98748e-01 3093 2007 4 2.38469e+01 8.63195e-01 2918 2007 5 2.61377e+01 8.81419e-01 3609 2007 6 2.80806e+01 1.38566e+00 2376 2007 7 3.04360e+01 1.06768e+00 2544 2007 8 3.06671e+01 8.41440e-01 2542 2007 9 3.03233e+01 1.17097e+00 1661 2007 10 2.82920e+01 9.97615e-01 1934 2007 11 2.48542e+01 1.20435e+00 3381 2007 12 2.36226e+01 5.77295e-01 3303 2008 1 2.08012e+01 9.66740e-01 2618 2008 2 2.24468e+01 1.01760e+00 2753 2008 3 2.25899e+01 7.37188e-01 3064 2008 4 2.46368e+01 6.85684e-01 3494 2008 5 2.67119e+01 1.32092e+00 3856 2008 6 2.86931e+01 9.15066e-01 2244 2008 7 2.98201e+01 1.31408e+00 1885 2008 8 3.03469e+01 1.06041e+00 2824 2008 9 2.92209e+01 8.71759e-01 1912 2008 10 2.76582e+01 1.14611e+00 1911 2008 11 2.29777e+01 1.14337e+00 3306 2008 12 2.10365e+01 4.55956e-01 3450 2009 1 2.07401e+01 1.12886e+00 2614 2009 2 1.87250e+01 6.81666e-01 3232 2009 3 2.05690e+01 1.16701e+00 3046 2009 4 2.43571e+01 6.69981e-01 3317 2009 5 2.63269e+01 1.25783e+00 3370 2009 6 2.93364e+01 1.05300e+00 2257 2009 7 2.99554e+01 1.30259e+00 2312 2009 8 3.01589e+01 1.10740e+00 2362 2009 9 3.05428e+01 8.43722e-01 1393 2009 10 2.92109e+01 1.46243e+00 2850 2009 11 2.52378e+01 1.30948e+00 1670 2009 12 2.35910e+01 1.32686e+00 2359 2010 1 1.86616e+01 2.08652e+00 1716 2010 2 1.85015e+01 8.94530e-01 1206 2010 3 1.85404e+01 1.07992e+00 2266 2010 4 2.19975e+01 1.48356e+00 2366 2010 5 2.63913e+01 1.40604e+00 3470 2010 6 2.93843e+01 1.34803e+00 2617 2010 7 2.88213e+01 1.58381e+00 2146 2010 8 3.00080e+01 1.65690e+00 1838 2010 9 2.99263e+01 9.75158e-01 1828 2010 10 2.72647e+01 1.15835e+00 3509 2010 11 2.44983e+01 1.05678e+00 3046 2010 12 2.01686e+01 2.05690e+00 3184 2011 1 1.80802e+01 6.64022e-01 2796 2011 2 1.95894e+01 1.22618e+00 2998 2011 3 2.12602e+01 1.38294e+00 4028 2011 4 2.49818e+01 1.07800e+00 3798 2011 5 2.72364e+01 9.44623e-01 3479 2011 6 2.86404e+01 1.20089e+00 2220 2011 7 3.00287e+01 1.27453e+00 2034 2011 8 3.06061e+01 1.01314e+00 1895 2011 9 3.00948e+01 9.01529e-01 2452 2011 10 2.82015e+01 1.56939e+00 1603 2011 11 2.43049e+01 6.29872e-01 3721 2011 12 2.24909e+01 5.45744e-01 3182 2012 1 2.11901e+01 8.00084e-01 2789 2012 2 2.21162e+01 8.79379e-01 2331 2012 3 2.37515e+01 6.10180e-01 3604 2012 4 2.54713e+01 1.00323e+00 2500 2012 5 2.70223e+01 1.42586e+00 2742 2012 6 2.89669e+01 1.01667e+00 1459 2012 7 2.90586e+01 1.27554e+00 2363 2012 8 3.00981e+01 1.33775e+00 1970 2012 9 2.88447e+01 8.89351e-01 2275 2012 10 2.74156e+01 1.15181e+00 2372 2012 11 2.34143e+01 1.33142e+00 2957 2012 12 2.21595e+01 7.95314e-01 2947 2013 1 2.18886e+01 7.78119e-01 2581 2013 2 2.18527e+01 8.67739e-01 2726 2013 3 2.15020e+01 7.33948e-01 2740 2013 4 2.40240e+01 1.83096e+00 3425 2013 5 2.59372e+01 1.03217e+00 3415 2013 6 2.82269e+01 1.16316e+00 2054 2013 7 2.86859e+01 1.25523e+00 1826 2013 8 2.97296e+01 1.33775e+00 1561 2013 9 2.91550e+01 8.06099e-01 1536 2013 10 2.86804e+01 8.71031e-01 2518 2013 11 2.55754e+01 1.10569e+00 2151 2013 12 2.37286e+01 7.83068e-01 2324 2014 1 2.17249e+01 1.24591e+00 2044 2014 2 2.25979e+01 9.05856e-01 3198 2014 3 2.36911e+01 6.12450e-01 3249 2014 4 2.47736e+01 1.07611e+00 2946 2014 5 2.65154e+01 5.27626e-01 2711 2014 6 2.92690e+01 1.25627e+00 2234 2014 7 3.05966e+01 1.12481e+00 2499 2014 8 3.12543e+01 1.17334e+00 2366 2014 9 2.95343e+01 1.20218e+00 1500 2014 10 2.84801e+01 1.40154e+00 2448 2014 11 2.46025e+01 1.25890e+00 2867 2014 12 2.15978e+01 5.64255e-01 2576 2015 1 2.17977e+01 6.07765e-01 2258 2015 2 2.02031e+01 6.30269e-01 2425 2015 3 2.31555e+01 1.67635e+00 3457 2015 4 2.56181e+01 1.62111e+00 3186 2015 5 2.76751e+01 1.11210e+00 2905 2015 6 2.93525e+01 1.06231e+00 2018 2015 7 3.03494e+01 1.06735e+00 2351 2015 8 3.10399e+01 1.15733e+00 2085 2015 9 3.08485e+01 1.21718e+00 1620 2015 10 2.84081e+01 1.02081e+00 2057 2015 11 2.68650e+01 1.14501e+00 3137 2015 12 2.44905e+01 6.92026e-01 2478 2016 1 2.25561e+01 1.73865e+00 998 2016 2 2.00264e+01 7.86318e-01 2152 2016 3 2.19183e+01 1.38934e+00 1452 2016 4 2.44791e+01 8.51600e-01 3253 2016 5 2.69400e+01 1.57114e+00 3399 2016 6 2.90054e+01 1.23939e+00 2180 2016 7 2.93822e+01 9.72771e-01 2449 2016 8 2.95883e+01 9.52401e-01 1959 2016 9 2.99069e+01 1.42627e+00 2305 2016 10 2.76211e+01 1.41396e+00 2474 2016 11 2.42514e+01 9.49982e-01 3680 2016 12 2.37948e+01 6.04326e-01 3100 2017 1 2.22112e+01 8.80599e-01 3089 2017 2 2.22383e+01 7.47653e-01 3129 2017 3 2.28708e+01 6.84871e-01 4017 2017 4 2.44684e+01 9.21192e-01 2435 2017 5 2.68625e+01 1.11071e+00 3195 2017 6 2.90680e+01 1.31986e+00 1425 2017 7 2.98610e+01 1.05836e+00 2018 2017 8 3.10325e+01 8.68829e-01 1970 2017 9 3.00240e+01 9.50583e-01 2095 2017 10 2.83069e+01 1.06103e+00 2060 2017 11 2.53531e+01 6.23633e-01 3547 2017 12 2.37226e+01 1.10985e+00 3307 2018 1 2.02950e+01 1.64266e+00 1831 2018 2 2.20233e+01 1.24173e+00 3231 2018 3 2.25182e+01 8.29677e-01 3714 2018 4 2.47713e+01 1.05516e+00 3270 2018 5 2.58182e+01 7.83974e-01 1026 2018 6 2.82875e+01 1.51181e+00 1809 2018 7 3.00201e+01 1.22380e+00 1882 2018 8 2.99121e+01 1.20728e+00 2195 2018 9 2.96517e+01 9.92686e-01 2235 2018 10 2.74479e+01 6.57550e-01 2962 2018 11 2.62551e+01 7.41572e-01 2488 2018 12 2.32394e+01 1.29334e+00 2341 2019 1 2.17606e+01 1.14674e+00 2509 2019 2 2.23570e+01 1.66875e+00 3141 2019 3 2.47291e+01 9.56072e-01 3427 2019 4 2.55090e+01 8.99497e-01 2886 2019 5 2.78414e+01 9.12523e-01 3283 2019 6 3.04012e+01 1.27643e+00 2882 2019 7 3.02223e+01 1.39787e+00 1957 2019 8 3.10779e+01 9.66926e-01 1929 2019 9 2.97699e+01 1.35996e+00 2790 2019 10 2.83000e+01 1.00913e+00 2831 2019 11 2.67428e+01 1.66468e+00 3120 2019 12 2.39366e+01 6.57287e-01 2252 2020 1 2.22767e+01 1.07154e+00 3185 2020 2 2.18357e+01 1.06323e+00 2937 2020 3 2.34533e+01 1.39393e+00 4139 2020 4 2.62042e+01 9.57233e-01 3059 2020 5 2.71789e+01 1.12844e+00 1877 2020 6 2.95817e+01 9.82980e-01 1595 2020 7 3.03183e+01 1.21828e+00 1887 2020 8 3.03517e+01 1.38837e+00 2133 2020 9 3.01912e+01 8.42817e-01 1829 2020 10 2.89396e+01 1.13260e+00 1431 2020 11 2.55467e+01 9.75536e-01 2513 2020 12 2.27342e+01 1.26237e+00 2910 2021 1 2.10357e+01 8.73585e-01 2539 2021 2 2.20391e+01 1.17868e+00 3123 2021 3 2.34490e+01 8.72481e-01 4023 2021 4 2.46645e+01 1.20180e+00 3473 2021 5 2.71256e+01 9.81910e-01 2828 2021 6 2.77548e+01 9.21020e-01 1611 2021 7 2.96672e+01 1.17387e+00 3078 2021 8 3.03039e+01 9.52270e-01 1684 2021 9 3.03690e+01 8.85094e-01 2723 2021 10 2.91115e+01 9.98693e-01 2527 2021 11 2.50873e+01 1.49910e+00 2480 2021 12 2.35161e+01 5.11230e-01 3780 2022 1 2.29098e+01 9.04825e-01 2190 2022 2 2.11274e+01 9.26658e-01 2705 2022 3 2.37526e+01 1.35558e+00 3766 2022 4 2.54396e+01 9.10609e-01 2028 2022 5 2.75538e+01 9.80613e-01 2977 2022 6 2.92898e+01 1.14760e+00 2433 2022 7 3.00414e+01 8.26481e-01 2313 2022 8 3.03837e+01 1.03828e+00 2292 2022 9 3.08048e+01 9.51521e-01 1873 2022 10 2.76839e+01 1.05853e+00 2689 2022 11 2.64633e+01 6.40856e-01 2736 2022 12 2.46719e+01 1.13239e+00 2885 2023 1 2.18389e+01 8.29751e-01 3221 2023 2 2.30742e+01 1.19043e+00 3713 2023 3 2.47107e+01 1.07139e+00 3638 2023 4 2.66859e+01 8.93143e-01 2621 2023 5 2.84015e+01 9.65218e-01 3334 2023 6 2.98336e+01 1.03786e+00 2783 2023 7 3.13064e+01 1.08478e+00 2225 2023 8 3.13119e+01 1.04249e+00 2220 2023 9 3.08560e+01 9.30551e-01 2191 2023 10 2.87584e+01 1.49136e+00 2498 2023 11 2.55718e+01 8.56171e-01 2275 2023 12 2.28505e+01 1.71371e+00 1343 2024 1 2.16065e+01 9.14404e-01 1450 2024 2 2.08101e+01 6.20240e-01 2457 2024 3 2.37098e+01 1.02689e+00 2307 2024 4 2.39630e+01 5.68544e-01 313