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 9.90424e+00 2.82351e+00 192 2002 8 9.27343e+00 3.64885e-01 64 2002 9 3.32330e+00 7.20207e-01 128 2002 10 5.21181e+00 2.45031e+00 289 2002 11 2.69528e+00 1.05343e+00 719 2002 12 4.00538e+00 2.10807e+00 808 2003 1 7.61441e+00 2.65753e+00 641 2003 2 7.77539e+00 1.79006e+00 287 2003 3 1.14999e+01 1.88557e+00 318 2003 4 8.93144e+00 1.84319e+00 153 2003 5 6.94274e+00 5.67007e-01 64 2003 6 1.25644e+01 6.07442e-01 83 2003 7 4.97184e+00 2.12850e-01 64 2003 8 nan nan 0 2003 9 5.86951e+00 2.68731e+00 421 2003 10 5.29465e+00 1.86850e+00 576 2003 11 2.72015e+00 2.14177e+00 496 2003 12 3.75934e+00 2.08707e+00 560 2004 1 6.20543e+00 1.87182e+00 905 2004 2 7.66423e+00 3.07444e+00 645 2004 3 7.82091e+00 2.05583e+00 384 2004 4 1.10187e+01 5.53997e+00 367 2004 5 7.67320e+00 8.75705e-01 72 2004 6 7.70389e+00 2.57761e-01 9 2004 7 7.52716e+00 5.45415e+00 26 2004 8 1.30399e+01 2.50357e+00 43 2004 9 4.40709e+00 1.50267e+00 179 2004 10 4.05983e+00 3.60543e+00 424 2004 11 5.22998e+00 2.16309e+00 704 2004 12 4.75344e+00 1.40422e+00 948 2005 1 6.56470e+00 1.76610e+00 513 2005 2 5.23460e+00 2.53014e+00 580 2005 3 1.01648e+01 4.14135e+00 576 2005 4 9.37785e+00 2.02579e+00 239 2005 5 8.49139e+00 1.90812e+00 285 2005 6 nan nan 0 2005 7 4.78962e+00 6.31610e-01 70 2005 8 1.18977e+01 8.71799e+00 101 2005 9 7.33227e+00 2.53781e+00 135 2005 10 8.45166e+00 2.72176e+00 128 2005 11 5.87050e+00 1.58683e+00 622 2005 12 5.50842e+00 1.54952e+00 863 2006 1 6.38214e+00 8.79965e-01 565 2006 2 6.62524e+00 2.29394e+00 436 2006 3 7.26057e+00 1.43651e+00 512 2006 4 7.31400e+00 2.82172e+00 512 2006 5 9.37980e+00 3.07413e+00 321 2006 6 nan nan 0 2006 7 3.76121e+00 1.66435e+00 152 2006 8 nan nan 0 2006 9 8.41572e+00 2.30719e+00 224 2006 10 7.16145e+00 3.70237e+00 385 2006 11 6.70697e+00 2.45893e+00 406 2006 12 5.71401e+00 1.31352e+00 561 2007 1 4.84668e+00 1.64748e+00 858 2007 2 7.13161e+00 2.51245e+00 804 2007 3 9.65170e+00 3.51021e+00 404 2007 4 7.15602e+00 1.38967e+00 275 2007 5 6.81553e+00 2.56442e+00 192 2007 6 1.30840e+01 3.15600e+00 141 2007 7 nan nan 0 2007 8 9.24864e+00 1.92988e-01 64 2007 9 5.94895e+00 3.09327e+00 128 2007 10 4.73834e+00 2.22143e+00 219 2007 11 6.15891e+00 2.27201e+00 402 2007 12 4.66367e+00 1.29911e+00 702 2008 1 6.76750e+00 2.76893e+00 1019 2008 2 8.09974e+00 2.71871e+00 410 2008 3 9.70640e+00 1.77802e+00 528 2008 4 1.24194e+01 3.09402e+00 309 2008 5 9.09336e+00 2.96655e+00 366 2008 6 8.80613e+00 1.97149e+00 128 2008 7 1.25544e+01 2.01390e+00 70 2008 8 5.49740e+00 2.59517e+00 210 2008 9 2.45882e+00 1.20882e+00 139 2008 10 4.93539e+00 2.06591e+00 642 2008 11 5.77358e+00 1.54776e+00 541 2008 12 5.22546e+00 1.90988e+00 921 2009 1 7.91845e+00 3.76791e+00 921 2009 2 8.21469e+00 3.00124e+00 338 2009 3 9.07372e+00 1.91228e+00 610 2009 4 1.07238e+01 3.09145e+00 198 2009 5 5.95585e+00 3.64419e+00 115 2009 6 1.36921e+00 6.44229e-02 64 2009 7 6.59683e+00 1.31071e+00 103 2009 8 1.18270e+01 5.97097e+00 198 2009 9 6.33664e+00 7.63819e-01 322 2009 10 4.92222e+00 2.87556e+00 464 2009 11 4.30114e+00 2.67755e+00 832 2009 12 5.65000e+00 2.02656e+00 861 2010 1 4.95362e+00 2.51201e+00 588 2010 2 8.22756e+00 3.27012e+00 512 2010 3 9.09536e+00 2.63757e+00 278 2010 4 1.31585e+01 5.12158e+00 190 2010 5 6.04236e+00 1.49974e-01 7 2010 6 6.48396e+00 1.61513e+00 188 2010 7 5.08805e+00 7.06835e-02 64 2010 8 3.17442e+00 1.10315e+00 252 2010 9 2.44550e+00 4.97911e-01 65 2010 10 2.43834e+00 1.54730e+00 299 2010 11 3.17792e+00 1.75344e+00 639 2010 12 4.01172e+00 1.49457e+00 660 2011 1 5.29281e+00 2.02385e+00 677 2011 2 5.93977e+00 3.12850e+00 462 2011 3 8.84123e+00 2.08255e+00 934 2011 4 8.22807e+00 4.11878e+00 320 2011 5 7.92800e+00 2.32785e+00 414 2011 6 1.06197e+01 1.20795e+00 128 2011 7 9.39187e+00 5.42909e-01 64 2011 8 1.08116e+01 2.74367e+00 85 2011 9 7.65690e+00 2.91544e+00 398 2011 10 6.22103e+00 2.50517e+00 394 2011 11 5.93920e+00 2.94482e+00 730 2011 12 6.43171e+00 1.76614e+00 944 2012 1 5.72494e+00 1.62534e+00 961 2012 2 7.48238e+00 2.90325e+00 512 2012 3 1.01224e+01 2.79905e+00 586 2012 4 7.52021e+00 1.44125e+00 387 2012 5 3.42745e+00 2.49926e+00 249 2012 6 7.62415e+00 3.00830e-01 64 2012 7 1.68754e+01 9.68729e-01 64 2012 8 6.39304e+00 3.30587e-01 64 2012 9 4.92129e+00 1.57355e+00 235 2012 10 2.88484e+00 7.76433e-01 198 2012 11 5.27306e+00 9.50926e-01 513 2012 12 4.59648e+00 1.01775e+00 739 2013 1 4.79635e+00 1.96303e+00 683 2013 2 7.63510e+00 1.63430e+00 640 2013 3 8.74080e+00 2.61297e+00 269 2013 4 5.39301e+00 2.16840e+00 65 2013 5 7.85581e+00 2.30565e+00 177 2013 6 nan nan 0 2013 7 7.66467e+00 2.57689e+00 192 2013 8 7.16232e+00 2.37527e-01 46 2013 9 3.08409e+00 5.02824e-01 314 2013 10 7.04364e+00 5.31910e-01 80 2013 11 4.75994e+00 2.09828e+00 687 2013 12 3.71152e+00 1.37558e+00 666 2014 1 7.65190e+00 2.17915e+00 654 2014 2 9.25538e+00 1.97892e+00 320 2014 3 9.51293e+00 3.04281e+00 550 2014 4 9.76372e+00 2.02999e+00 156 2014 5 1.40867e+01 3.64017e+00 128 2014 6 1.32964e+01 2.24307e-01 64 2014 7 9.29777e+00 2.52385e+00 192 2014 8 2.76644e+00 2.29781e-01 18 2014 9 8.61006e+00 2.58062e+00 287 2014 10 5.96204e+00 3.82846e+00 440 2014 11 5.13214e+00 1.11673e+00 373 2014 12 5.23628e+00 1.82279e+00 819 2015 1 7.16945e+00 1.77287e+00 835 2015 2 7.09202e+00 2.19226e+00 409 2015 3 8.59879e+00 2.81349e+00 392 2015 4 1.05820e+01 2.94285e+00 263 2015 5 4.11799e+00 2.79031e-01 64 2015 6 nan nan 0 2015 7 nan nan 0 2015 8 9.56384e+00 1.93246e+00 125 2015 9 5.66565e+00 1.93542e+00 268 2015 10 5.29002e+00 2.50821e+00 570 2015 11 3.42474e+00 1.20575e+00 322 2015 12 4.87430e+00 2.26836e+00 535 2016 1 4.31414e+00 1.31024e+00 803 2016 2 6.90543e+00 1.72714e+00 552 2016 3 1.08342e+01 3.82882e+00 257 2016 4 8.25696e+00 3.93937e-01 194 2016 5 6.14596e+00 2.88323e-01 128 2016 6 7.50231e+00 1.14136e+00 11 2016 7 nan nan 0 2016 8 2.85823e+00 2.64633e+00 74 2016 9 5.19252e+00 2.52115e+00 199 2016 10 2.71389e+00 1.38616e+00 553 2016 11 3.92345e+00 1.99399e+00 448 2016 12 5.66367e+00 2.41117e+00 936 2017 1 4.75833e+00 1.77854e+00 954 2017 2 6.57188e+00 2.89394e+00 399 2017 3 7.77568e+00 3.17864e+00 312 2017 4 7.57150e+00 1.60561e+00 245 2017 5 4.71226e+00 9.61400e-01 199 2017 6 1.49557e+01 2.83748e+00 91 2017 7 2.75160e+00 4.09832e-01 64 2017 8 1.51850e+00 1.85550e-01 220 2017 9 2.87524e+00 1.81059e+00 84 2017 10 4.00718e+00 2.20860e+00 214 2017 11 3.29344e+00 2.19863e+00 403 2017 12 5.24155e+00 2.04915e+00 706 2018 1 5.57990e+00 2.24874e+00 610 2018 2 6.63731e+00 1.90639e+00 419 2018 3 8.06468e+00 2.75964e+00 704 2018 4 7.90628e+00 1.11292e+00 266 2018 5 7.25525e+00 5.95379e-01 74 2018 6 4.94863e-01 0.00000e+00 8 2018 7 9.16969e+00 2.64692e-01 62 2018 8 nan nan 0 2018 9 3.26534e+00 3.81298e+00 254 2018 10 5.26378e+00 1.84099e+00 465 2018 11 3.70192e+00 2.86241e+00 649 2018 12 4.38591e+00 1.95074e+00 823 2019 1 4.76784e+00 1.75199e+00 719 2019 2 8.18285e+00 2.55375e+00 469 2019 3 8.69197e+00 1.03836e+00 375 2019 4 8.43075e+00 3.65485e+00 204 2019 5 9.67512e+00 2.67473e+00 104 2019 6 1.12882e+01 1.45872e+00 112 2019 7 4.19406e+00 3.51656e-01 29 2019 8 3.75832e+00 1.20560e+00 67 2019 9 3.80332e+00 1.99181e+00 227 2019 10 2.90351e+00 2.96332e+00 369 2019 11 6.24615e+00 1.74214e+00 780 2019 12 3.98098e+00 2.05129e+00 888 2020 1 6.52214e+00 2.61301e+00 923 2020 2 6.33707e+00 2.10702e+00 432 2020 3 7.91509e+00 2.09561e+00 469 2020 4 7.89915e+00 2.54985e+00 446 2020 5 5.90307e+00 1.85802e+00 290 2020 6 8.67608e+00 6.64693e-01 10 2020 7 8.48258e+00 3.87021e-01 128 2020 8 4.10036e+00 1.02008e+00 168 2020 9 7.85061e+00 2.61110e+00 462 2020 10 6.32304e+00 2.41196e+00 277 2020 11 4.67160e+00 1.99317e+00 360 2020 12 4.62506e+00 1.90830e+00 951 2021 1 6.14232e+00 1.98796e+00 733 2021 2 8.26537e+00 2.60241e+00 378 2021 3 8.03464e+00 1.94811e+00 504 2021 4 1.06769e+01 2.60538e+00 220 2021 5 1.19010e+01 6.13149e+00 264 2021 6 1.51323e+00 2.22963e+00 60 2021 7 2.26841e+00 3.97937e-01 64 2021 8 1.15444e+01 3.51319e+00 73 2021 9 5.24132e+00 1.71053e+00 335 2021 10 4.35869e+00 1.80844e+00 542 2021 11 3.17228e+00 1.58936e+00 744 2021 12 3.20052e+00 1.61860e+00 642 2022 1 6.27759e+00 1.40041e+00 859 2022 2 9.26967e+00 2.11765e+00 561 2022 3 1.09912e+01 2.48290e+00 121 2022 4 9.79700e+00 3.10857e-01 64 2022 5 1.20285e+01 4.69172e+00 121 2022 6 8.03528e+00 2.72287e+00 63 2022 7 nan nan 0 2022 8 8.10925e+00 4.10706e-01 64 2022 9 8.19532e+00 5.55919e+00 225 2022 10 5.19882e+00 2.44718e+00 311 2022 11 4.67982e+00 2.78134e+00 629 2022 12 5.61472e+00 2.00216e+00 948 2023 1 6.47144e+00 2.39291e+00 1009 2023 2 9.40617e+00 3.91845e+00 484 2023 3 1.06812e+01 4.73089e+00 591 2023 4 8.70884e+00 2.37575e+00 254 2023 5 8.53115e+00 2.49175e+00 320 2023 6 6.25095e+00 3.47059e+00 301 2023 7 nan nan 0 2023 8 9.23290e+00 1.03715e+00 64 2023 9 4.43096e+00 2.50839e+00 295 2023 10 7.51457e+00 2.38491e+00 328 2023 11 5.95965e+00 2.14176e+00 446 2023 12 5.36254e+00 1.88103e+00 842 2024 1 6.69906e+00 2.27683e+00 818 2024 2 7.34876e+00 3.98836e+00 902 2024 3 1.00360e+01 1.50748e+00 385 2024 4 9.43970e+00 1.68092e+00 128