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 3.18693e+01 6.47632e+00 365 2002 8 1.80090e+01 5.64667e+00 576 2002 9 1.72701e+01 7.68835e+00 640 2002 10 1.46771e+01 5.24181e+00 1117 2002 11 9.65493e+00 7.18632e+00 768 2002 12 6.48751e+00 3.41398e+00 807 2003 1 5.96142e+00 3.40762e+00 850 2003 2 1.36989e+01 2.44378e+00 640 2003 3 1.90835e+01 4.85189e+00 384 2003 4 9.91432e+00 5.83557e+00 651 2003 5 2.80302e+01 3.98111e+00 668 2003 6 1.94408e+01 5.08770e+00 379 2003 7 2.60471e+01 3.10451e+00 576 2003 8 1.55229e+01 5.86752e+00 464 2003 9 7.04471e+00 6.07960e+00 512 2003 10 1.06171e+01 5.17295e+00 894 2003 11 1.13773e+01 5.85495e+00 1035 2003 12 8.81908e+00 7.32108e+00 822 2004 1 1.24266e+01 5.24274e+00 960 2004 2 1.50600e+01 6.25493e+00 832 2004 3 2.61719e+01 3.39428e+00 1023 2004 4 2.28390e+01 7.72671e+00 491 2004 5 3.01400e+01 4.29109e+00 781 2004 6 3.14413e+01 2.95309e+00 827 2004 7 2.69700e+01 4.50151e+00 510 2004 8 1.69762e+01 8.49437e+00 708 2004 9 4.02578e+00 4.16322e+00 383 2004 10 4.81529e+00 3.84376e+00 866 2004 11 1.16849e+01 7.05352e+00 965 2004 12 5.12848e+00 6.32737e+00 448 2005 1 6.17070e+00 5.18791e+00 1088 2005 2 2.58955e+00 2.53323e+00 947 2005 3 7.28842e+00 4.81203e+00 384 2005 4 2.13781e+01 8.18544e+00 896 2005 5 2.83739e+01 3.54489e+00 563 2005 6 1.71412e+01 4.88928e+00 372 2005 7 1.52285e+01 1.09192e+01 452 2005 8 1.12066e+01 5.92498e+00 705 2005 9 2.33165e+00 2.24990e+00 480 2005 10 2.55013e+00 2.63244e+00 685 2005 11 5.83343e-01 9.73421e-01 923 2005 12 2.71428e+00 1.36548e+00 768 2006 1 4.88829e+00 4.09627e+00 592 2006 2 1.15129e+01 5.10847e+00 960 2006 3 1.95843e+01 3.89774e+00 985 2006 4 3.11154e+01 4.17198e+00 814 2006 5 3.09807e+01 3.25091e+00 778 2006 6 2.53560e+01 6.68255e+00 797 2006 7 2.58156e+01 4.03986e+00 576 2006 8 1.84717e+01 6.15776e+00 495 2006 9 1.86014e+01 7.26732e+00 808 2006 10 5.46854e+00 3.70068e+00 950 2006 11 5.10386e+00 5.10362e+00 564 2006 12 9.15695e+00 7.06991e+00 419 2007 1 1.63307e+01 5.26299e+00 696 2007 2 1.74457e+01 6.55699e+00 640 2007 3 2.82528e+01 5.93124e+00 751 2007 4 2.09901e+01 9.45720e+00 673 2007 5 2.59833e+01 5.94608e+00 538 2007 6 2.52726e+01 8.93720e+00 575 2007 7 1.93717e+01 7.33262e+00 635 2007 8 1.13441e+01 7.08939e+00 826 2007 9 1.37387e+01 5.15944e+00 826 2007 10 1.28964e+01 8.38590e+00 704 2007 11 1.74107e+01 5.92968e+00 1024 2007 12 1.70674e+01 9.20266e+00 997 2008 1 1.76400e+01 6.86028e+00 768 2008 2 2.17700e+01 8.90720e+00 816 2008 3 1.85340e+01 8.58582e+00 642 2008 4 3.12200e+01 2.62740e+00 832 2008 5 2.56261e+01 5.23402e+00 647 2008 6 2.70822e+01 4.45242e+00 576 2008 7 2.39232e+01 2.83414e+00 512 2008 8 2.36808e+01 4.86223e+00 258 2008 9 9.95084e+00 7.40649e+00 501 2008 10 1.07215e+01 6.14845e+00 956 2008 11 1.55434e+01 6.56987e+00 1276 2008 12 1.19890e+01 8.25352e+00 1218 2009 1 1.72278e+01 8.14138e+00 881 2009 2 2.25359e+01 1.04578e+01 1110 2009 3 2.07967e+01 1.00250e+01 913 2009 4 2.68877e+01 5.46905e+00 652 2009 5 3.08976e+01 4.56125e+00 642 2009 6 2.63819e+01 2.90714e+00 304 2009 7 2.52722e+01 1.77406e+00 448 2009 8 2.44009e+01 2.72598e+00 663 2009 9 1.67762e+01 7.28694e+00 741 2009 10 1.91852e+01 6.14257e+00 1066 2009 11 1.63879e+01 5.37317e+00 607 2009 12 1.20793e+01 7.59133e+00 344 2010 1 1.05977e+01 4.38842e+00 580 2010 2 6.72005e+00 4.68068e+00 454 2010 3 9.20866e+00 6.21630e+00 1033 2010 4 1.90324e+01 4.97801e+00 622 2010 5 2.63950e+01 3.95937e+00 704 2010 6 3.45342e+01 2.09989e+00 592 2010 7 2.84532e+01 4.95815e+00 384 2010 8 2.16180e+01 5.27595e+00 588 2010 9 1.76829e+01 5.39728e+00 654 2010 10 1.97663e+01 3.21836e+00 1193 2010 11 2.08577e+01 4.84851e+00 960 2010 12 6.47076e+00 5.43890e+00 960 2011 1 1.48523e+01 6.45182e+00 704 2011 2 2.30894e+01 4.32505e+00 903 2011 3 2.33269e+01 5.18596e+00 1152 2011 4 2.88164e+01 4.41106e+00 951 2011 5 2.37196e+01 2.24638e+00 809 2011 6 2.69748e+01 4.52777e+00 640 2011 7 2.75840e+01 3.65329e+00 479 2011 8 2.44302e+01 3.39414e+00 429 2011 9 8.44080e+00 3.62471e+00 344 2011 10 4.81381e+00 5.54384e+00 768 2011 11 1.03653e+01 5.18167e+00 1134 2011 12 1.46031e+01 5.65599e+00 1464 2012 1 1.88136e+01 7.70945e+00 960 2012 2 2.11114e+01 5.10579e+00 768 2012 3 2.11564e+01 4.34494e+00 1133 2012 4 2.39533e+01 7.27291e+00 752 2012 5 2.24466e+01 2.85901e+00 512 2012 6 1.57487e+01 4.07034e+00 250 2012 7 1.79599e+01 5.91858e+00 534 2012 8 2.39440e+01 3.30685e+00 293 2012 9 1.48615e+01 6.07740e+00 533 2012 10 1.25109e+01 5.50611e+00 878 2012 11 1.47430e+01 5.88141e+00 816 2012 12 9.85835e+00 6.11782e+00 652 2013 1 1.24226e+01 5.86033e+00 983 2013 2 1.28104e+01 7.34349e+00 960 2013 3 1.21668e+01 6.47374e+00 832 2013 4 2.69736e+01 4.27460e+00 635 2013 5 1.86901e+01 8.97914e+00 768 2013 6 2.99949e+01 5.79643e+00 576 2013 7 1.89648e+01 7.22387e+00 371 2013 8 1.98490e+01 5.62558e+00 576 2013 9 8.77328e+00 4.53057e+00 741 2013 10 9.81547e+00 4.83026e+00 1020 2013 11 1.64040e+01 1.70557e+00 320 2013 12 1.35350e+01 3.80472e+00 640 2014 1 5.53712e+00 4.38126e+00 768 2014 2 1.23525e+01 4.45644e+00 848 2014 3 1.20493e+01 4.35408e+00 768 2014 4 1.92987e+01 8.71351e+00 582 2014 5 2.38819e+01 3.06317e+00 697 2014 6 2.47200e+01 5.36013e+00 591 2014 7 2.52796e+01 3.42604e+00 351 2014 8 1.51991e+01 5.60088e+00 510 2014 9 7.84490e+00 3.66886e+00 396 2014 10 2.18162e+01 3.04089e+00 960 2014 11 9.35736e+00 3.64876e+00 960 2014 12 1.29600e+01 2.46392e+00 756 2015 1 9.59409e+00 7.44919e+00 653 2015 2 7.76074e+00 3.49782e+00 712 2015 3 1.83785e+01 4.11666e+00 1205 2015 4 2.43111e+01 6.72474e+00 448 2015 5 2.07599e+01 4.26027e+00 1046 2015 6 2.43435e+01 3.70793e+00 640 2015 7 1.90907e+01 3.07636e+00 134 2015 8 1.61332e+01 5.54758e+00 478 2015 9 1.82029e+01 3.64709e+00 296 2015 10 1.01788e+01 3.28458e+00 640 2015 11 8.65027e+00 3.26546e+00 961 2015 12 6.61179e+00 2.50683e+00 388 2016 1 4.93344e+00 4.66062e+00 346 2016 2 3.33863e+00 2.41265e+00 1024 2016 3 1.59984e+01 8.01535e+00 672 2016 4 1.97886e+01 6.87872e+00 870 2016 5 2.36149e+01 5.67544e+00 811 2016 6 2.77579e+01 2.72152e+00 512 2016 7 2.57620e+01 6.55379e+00 449 2016 8 2.16580e+01 7.42987e+00 642 2016 9 1.45914e+01 7.29715e+00 782 2016 10 1.50344e+01 5.82696e+00 1082 2016 11 1.92110e+01 4.88331e+00 1077 2016 12 2.15480e+01 4.91464e+00 989 2017 1 1.28941e+01 1.01605e+01 942 2017 2 1.06043e+01 4.36578e+00 957 2017 3 2.10098e+01 3.82137e+00 1199 2017 4 2.14696e+01 2.81901e+00 704 2017 5 1.64777e+01 4.84640e+00 704 2017 6 2.38229e+01 6.13812e+00 280 2017 7 2.46373e+01 5.92955e+00 396 2017 8 1.57842e+01 7.93249e+00 636 2017 9 5.51298e+00 6.27062e+00 774 2017 10 2.88398e+00 2.08196e+00 832 2017 11 9.06672e+00 3.39409e+00 1146 2017 12 1.15191e+01 5.95975e+00 1032 2018 1 7.53869e+00 4.79288e+00 670 2018 2 1.80332e+01 4.76174e+00 823 2018 3 2.13003e+01 8.70867e+00 1211 2018 4 2.41714e+01 5.33093e+00 1082 2018 5 2.96968e+01 3.33224e+00 393 2018 6 1.93934e+01 7.22179e+00 397 2018 7 1.81087e+01 1.10730e+01 576 2018 8 2.19417e+01 6.79226e+00 768 2018 9 6.37961e+00 7.09668e+00 877 2018 10 1.20059e+01 9.84740e+00 895 2018 11 1.58659e+00 2.03394e+00 396 2018 12 4.89140e+00 2.83180e+00 405 2019 1 7.67455e+00 5.79554e+00 644 2019 2 1.49881e+01 6.12549e+00 822 2019 3 2.42511e+01 5.54009e+00 784 2019 4 2.39020e+01 7.82953e+00 767 2019 5 2.88936e+01 3.04794e+00 704 2019 6 2.93657e+01 6.66406e+00 476 2019 7 2.14182e+01 6.61818e+00 640 2019 8 1.40515e+01 1.07645e+01 210 2019 9 1.83958e+01 4.52570e+00 668 2019 10 1.54686e+01 5.61233e+00 963 2019 11 7.96166e+00 2.26187e+00 638 2019 12 7.64884e+00 3.23186e+00 414 2020 1 1.35258e+01 5.83172e+00 963 2020 2 1.53369e+01 6.60644e+00 668 2020 3 2.69467e+01 7.29640e+00 1017 2020 4 2.82518e+01 6.01097e+00 448 2020 5 2.66372e+01 5.21582e+00 681 2020 6 2.27277e+01 2.77331e+00 512 2020 7 2.11535e+01 4.83296e+00 485 2020 8 2.36205e+01 2.38471e+00 313 2020 9 9.59833e+00 4.70066e+00 512 2020 10 4.31693e+00 4.28798e+00 568 2020 11 3.37367e+00 3.52233e+00 764 2020 12 4.44587e+00 1.80018e+00 768 2021 1 1.10616e+01 4.61434e+00 768 2021 2 1.54836e+01 7.63732e+00 572 2021 3 2.75653e+01 3.05617e+00 836 2021 4 2.50235e+01 3.43719e+00 906 2021 5 2.00271e+01 4.92609e+00 983 2021 6 2.12950e+01 1.84785e+00 192 2021 7 1.60282e+01 5.42119e+00 459 2021 8 1.33186e+01 8.10093e+00 514 2021 9 2.30526e+00 2.65257e+00 601 2021 10 3.97412e+00 3.25055e+00 717 2021 11 1.11853e+01 8.52555e+00 768 2021 12 1.43306e+01 6.71314e+00 1105 2022 1 7.39404e+00 5.31609e+00 801 2022 2 1.46653e+01 6.94994e+00 899 2022 3 1.94553e+01 5.73517e+00 898 2022 4 3.06069e+01 2.65409e+00 384 2022 5 3.30961e+01 3.03824e+00 840 2022 6 2.76692e+01 3.49334e+00 384 2022 7 2.19633e+01 4.02437e+00 587 2022 8 8.48826e+00 2.35332e+00 505 2022 9 9.13526e+00 3.05579e+00 432 2022 10 7.78389e+00 6.72412e+00 1016 2022 11 3.55394e+00 3.01011e+00 631 2022 12 7.13674e+00 3.89498e+00 896 2023 1 1.84312e+01 6.67033e+00 1026 2023 2 1.95941e+01 9.27116e+00 1148 2023 3 2.06999e+01 6.23283e+00 1055 2023 4 2.71892e+01 5.64870e+00 512 2023 5 2.23328e+01 5.30197e+00 854 2023 6 1.15127e+01 6.18348e+00 518 2023 7 1.22417e+01 4.04667e+00 574 2023 8 6.40642e+00 3.38101e+00 497 2023 9 1.24424e+01 6.90718e+00 960 2023 10 1.46436e+01 7.77218e+00 768 2023 11 1.82908e+01 8.69411e+00 809 2023 12 1.37928e+01 1.04499e+01 423 2024 1 1.08427e+01 6.91525e+00 498 2024 2 1.56054e+01 7.08864e+00 730 2024 3 2.29714e+01 6.10131e+00 755 2024 4 nan nan 0