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 6.17772e+01 1.31240e-01 58 2002 8 5.67413e+01 1.60650e-01 90 2002 9 5.25353e+01 1.50783e+00 87 2002 10 4.41313e+01 1.05951e+00 440 2002 11 3.77971e+01 2.71324e+00 423 2002 12 3.35498e+01 1.06953e+00 412 2003 1 3.56484e+01 1.28863e+00 704 2003 2 4.28910e+01 1.94077e+00 690 2003 3 5.09135e+01 1.85565e+00 309 2003 4 5.74528e+01 2.02203e-01 26 2003 5 6.13463e+01 6.08968e-01 115 2003 6 6.20047e+01 2.05793e-01 14 2003 7 nan nan 0 2003 8 5.98300e+01 4.58841e-01 14 2003 9 5.18743e+01 7.61272e-01 114 2003 10 4.60938e+01 4.22927e+00 162 2003 11 3.73875e+01 9.76009e-01 469 2003 12 3.34964e+01 8.04628e-01 319 2004 1 3.51426e+01 4.66467e-01 90 2004 2 nan nan 0 2004 3 4.85991e+01 8.69590e-01 65 2004 4 5.85129e+01 1.35846e+00 128 2004 5 6.23061e+01 4.38352e-01 290 2004 6 6.23493e+01 2.04900e-01 227 2004 7 6.11229e+01 5.19449e-01 71 2004 8 5.84827e+01 1.43487e+00 74 2004 9 5.23562e+01 1.65982e+00 47 2004 10 4.46219e+01 1.37279e+00 308 2004 11 3.88858e+01 1.13615e+00 334 2004 12 3.44198e+01 5.86544e-01 214 2005 1 3.61847e+01 1.80512e+00 965 2005 2 4.36704e+01 2.30330e+00 538 2005 3 5.31273e+01 2.38012e+00 158 2005 4 5.59977e+01 3.56871e-02 64 2005 5 6.14218e+01 9.53682e-01 140 2005 6 6.19977e+01 5.18033e-01 12 2005 7 6.10592e+01 4.10707e-01 53 2005 8 5.88679e+01 1.31317e+00 34 2005 9 nan nan 0 2005 10 4.94406e+01 2.66081e-01 7 2005 11 3.81363e+01 1.94073e+00 460 2005 12 3.38655e+01 7.16207e-01 695 2006 1 3.62276e+01 1.64954e+00 477 2006 2 4.59618e+01 1.01911e+00 448 2006 3 5.03365e+01 1.91797e+00 542 2006 4 5.87522e+01 1.24495e+00 109 2006 5 5.98852e+01 7.11435e-01 77 2006 6 6.17812e+01 1.73853e-01 129 2006 7 6.15092e+01 1.35565e-01 67 2006 8 5.95321e+01 1.12375e+00 32 2006 9 5.42420e+01 4.08693e-02 9 2006 10 4.72000e+01 1.02884e+00 4 2006 11 3.71851e+01 1.99200e+00 385 2006 12 3.35378e+01 6.73366e-01 299 2007 1 3.61657e+01 1.11581e+00 715 2007 2 4.01313e+01 7.81505e-01 43 2007 3 5.10515e+01 3.17987e+00 107 2007 4 5.51073e+01 1.41269e-01 64 2007 5 6.07298e+01 3.06182e-01 171 2007 6 6.23318e+01 8.46579e-03 13 2007 7 6.16987e+01 1.49160e-03 6 2007 8 5.88812e+01 1.02098e+00 16 2007 9 5.32828e+01 9.67412e-01 51 2007 10 4.46978e+01 2.78574e+00 263 2007 11 3.92024e+01 6.81507e-01 476 2007 12 3.40786e+01 8.77752e-01 727 2008 1 3.62529e+01 1.65307e+00 488 2008 2 4.03309e+01 2.77229e-01 20 2008 3 nan nan 0 2008 4 5.93897e+01 1.06163e+00 22 2008 5 6.05918e+01 8.89301e-01 171 2008 6 6.24667e+01 5.62532e-02 66 2008 7 6.11424e+01 4.35922e-01 122 2008 8 5.87914e+01 4.13111e-01 74 2008 9 5.26080e+01 1.52736e-01 3 2008 10 4.90155e+01 7.83046e-02 36 2008 11 3.63939e+01 1.71253e+00 611 2008 12 3.39426e+01 5.52950e-01 845 2009 1 3.68253e+01 1.81542e+00 512 2009 2 4.29020e+01 0.00000e+00 1 2009 3 5.42157e+01 6.36997e-01 40 2009 4 5.82240e+01 4.81689e-01 63 2009 5 6.24297e+01 9.51466e-02 64 2009 6 6.19209e+01 3.00398e-01 86 2009 7 6.13029e+01 2.93912e-01 13 2009 8 5.73308e+01 9.50552e-01 33 2009 9 5.27936e+01 1.30053e+00 9 2009 10 4.23044e+01 2.40532e-01 63 2009 11 3.54830e+01 1.70808e+00 277 2009 12 3.39880e+01 9.00003e-01 397 2010 1 3.46147e+01 1.98747e-01 192 2010 2 nan nan 0 2010 3 nan nan 0 2010 4 5.70301e+01 8.48131e-01 197 2010 5 5.95573e+01 5.38179e-01 58 2010 6 5.96393e+01 1.78009e+00 12 2010 7 6.08005e+01 1.27982e-01 44 2010 8 5.88924e+01 3.54540e-01 72 2010 9 5.43102e+01 2.12357e+00 25 2010 10 4.65895e+01 1.99603e+00 178 2010 11 3.77937e+01 1.04006e+00 654 2010 12 3.31782e+01 8.07636e-01 366 2011 1 nan nan 0 2011 2 3.95060e+01 0.00000e+00 1 2011 3 5.27735e+01 2.18340e+00 73 2011 4 5.65205e+01 1.15411e+00 196 2011 5 6.05401e+01 6.85446e-01 320 2011 6 6.08313e+01 1.21933e-01 64 2011 7 6.07094e+01 3.79611e-01 63 2011 8 5.88679e+01 1.26424e-01 64 2011 9 5.47380e+01 3.81470e-06 3 2011 10 4.77724e+01 8.09602e-01 212 2011 11 3.82862e+01 1.26878e+00 253 2011 12 3.36637e+01 8.12665e-01 907 2012 1 3.63607e+01 1.50643e+00 329 2012 2 4.43947e+01 2.26193e+00 490 2012 3 5.18472e+01 1.56630e+00 389 2012 4 5.72805e+01 5.36847e-01 244 2012 5 6.23020e+01 0.00000e+00 1 2012 6 6.23567e+01 6.61617e-02 65 2012 7 6.21722e+01 3.54628e-02 54 2012 8 5.83544e+01 2.18650e-02 9 2012 9 5.06358e+01 2.05318e-01 10 2012 10 4.41864e+01 1.68914e+00 122 2012 11 3.78365e+01 2.01937e+00 852 2012 12 3.41061e+01 8.21931e-01 559 2013 1 3.63053e+01 1.46302e+00 450 2013 2 4.33760e+01 2.17617e+00 579 2013 3 5.25443e+01 2.50828e+00 30 2013 4 5.83184e+01 6.55557e-03 38 2013 5 6.01373e+01 1.43403e+00 19 2013 6 nan nan 0 2013 7 6.05480e+01 1.08988e+00 57 2013 8 5.70970e+01 7.03598e-01 6 2013 9 5.17525e+01 1.50267e+00 208 2013 10 4.66584e+01 2.24551e+00 326 2013 11 3.78478e+01 1.15720e+00 488 2013 12 3.41547e+01 6.73320e-01 625 2014 1 3.63327e+01 1.73494e+00 438 2014 2 4.15825e+01 1.43730e+00 378 2014 3 5.11060e+01 1.60000e-01 4 2014 4 5.45205e+01 3.79567e-02 8 2014 5 6.08366e+01 2.40063e+00 52 2014 6 6.23396e+01 4.09664e-02 10 2014 7 6.12887e+01 1.10538e-01 32 2014 8 5.85259e+01 1.24129e+00 131 2014 9 5.16597e+01 1.35869e+00 216 2014 10 4.94341e+01 1.10346e+00 45 2014 11 3.47613e+01 9.18902e-01 204 2014 12 3.39383e+01 6.10841e-01 955 2015 1 3.66424e+01 1.39345e+00 391 2015 2 4.24004e+01 1.83902e+00 494 2015 3 5.05347e+01 2.37805e+00 96 2015 4 5.76059e+01 2.02024e+00 98 2015 5 6.13298e+01 5.23648e-02 22 2015 6 6.22524e+01 1.05916e-01 182 2015 7 6.18899e+01 1.42231e-01 340 2015 8 6.04772e+01 1.80281e-01 34 2015 9 5.26208e+01 4.79065e-01 26 2015 10 4.58047e+01 1.58670e+00 92 2015 11 3.66948e+01 1.72896e+00 197 2015 12 3.41049e+01 4.70536e-01 485 2016 1 3.34514e+01 1.31299e+00 38 2016 2 4.21375e+01 2.35066e+00 298 2016 3 5.04430e+01 1.53523e+00 136 2016 4 5.80913e+01 6.89168e-01 149 2016 5 6.16082e+01 7.55525e-01 183 2016 6 6.23381e+01 1.98170e-01 117 2016 7 6.09027e+01 1.03706e-02 3 2016 8 5.82124e+01 1.35251e+00 68 2016 9 5.27952e+01 2.80637e+00 157 2016 10 4.56174e+01 1.86683e+00 804 2016 11 3.81849e+01 1.91038e+00 1102 2016 12 3.39375e+01 1.16039e-01 448 2017 1 3.67150e+01 1.08783e+00 408 2017 2 4.11287e+01 1.02733e+00 192 2017 3 5.28740e+01 4.24247e-02 3 2017 4 5.79231e+01 1.03640e+00 94 2017 5 6.22697e+01 8.89823e-02 64 2017 6 6.24176e+01 8.52421e-02 10 2017 7 6.17471e+01 3.60329e-01 53 2017 8 5.87637e+01 1.12951e+00 311 2017 9 5.42656e+01 1.87404e+00 165 2017 10 4.73905e+01 1.54130e+00 179 2017 11 3.82630e+01 1.64646e+00 1064 2017 12 3.42544e+01 4.83172e-01 846 2018 1 3.59933e+01 1.71578e+00 316 2018 2 4.28733e+01 2.22073e+00 595 2018 3 5.15793e+01 8.80410e-01 97 2018 4 5.78649e+01 9.91041e-01 135 2018 5 5.96594e+01 1.54930e+00 95 2018 6 6.20501e+01 1.82166e-01 28 2018 7 6.10871e+01 3.61535e-01 195 2018 8 5.83722e+01 4.64938e-01 152 2018 9 5.32711e+01 1.28082e+00 228 2018 10 4.50015e+01 2.18563e+00 627 2018 11 3.78346e+01 2.97721e+00 130 2018 12 3.37847e+01 5.86694e-01 353 2019 1 3.55346e+01 1.02037e+00 237 2019 2 4.31329e+01 2.92113e+00 683 2019 3 5.25948e+01 2.92216e+00 393 2019 4 5.77214e+01 1.29397e+00 483 2019 5 6.17357e+01 3.99311e-01 136 2019 6 6.23931e+01 1.48788e-01 361 2019 7 6.14590e+01 3.02223e-01 176 2019 8 5.84530e+01 7.09991e-02 4 2019 9 5.25306e+01 9.84581e-01 49 2019 10 4.61583e+01 2.29766e+00 101 2019 11 3.95546e+01 1.56511e+00 290 2019 12 3.34818e+01 7.65650e-01 202 2020 1 3.61813e+01 1.59210e+00 583 2020 2 4.29994e+01 2.14939e+00 205 2020 3 5.24741e+01 1.76305e+00 141 2020 4 5.78213e+01 8.72794e-01 233 2020 5 6.12941e+01 6.36164e-01 298 2020 6 6.23169e+01 1.47943e-01 109 2020 7 6.11956e+01 6.29205e-01 189 2020 8 5.74293e+01 1.09472e+00 131 2020 9 5.33976e+01 1.58563e+00 291 2020 10 4.54926e+01 2.47505e+00 350 2020 11 3.70633e+01 1.29980e+00 474 2020 12 3.34022e+01 5.49189e-01 581 2021 1 3.68790e+01 1.42825e+00 656 2021 2 4.47912e+01 2.83711e+00 181 2021 3 5.25152e+01 2.26791e+00 780 2021 4 5.85456e+01 1.54458e+00 292 2021 5 6.17428e+01 5.59328e-01 387 2021 6 6.22929e+01 1.15090e-01 236 2021 7 6.13470e+01 5.67753e-01 355 2021 8 5.91609e+01 7.95618e-01 348 2021 9 5.11457e+01 1.19687e+00 279 2021 10 4.58141e+01 9.89989e-01 334 2021 11 3.68764e+01 1.50449e+00 415 2021 12 3.43381e+01 6.00784e-01 807 2022 1 3.51833e+01 9.97052e-01 273 2022 2 4.38036e+01 2.95422e+00 463 2022 3 4.82177e+01 1.60818e+00 101 2022 4 5.79536e+01 8.86203e-01 11 2022 5 6.10476e+01 8.18837e-01 32 2022 6 6.23040e+01 1.28295e-02 7 2022 7 6.13837e+01 3.37000e-01 32 2022 8 5.73252e+01 8.22726e-01 8 2022 9 5.36376e+01 2.66338e-01 63 2022 10 4.56704e+01 1.90324e+00 318 2022 11 3.76962e+01 2.24246e+00 544 2022 12 3.41620e+01 8.15168e-01 827 2023 1 3.59014e+01 1.60875e+00 768 2023 2 4.39396e+01 2.50718e+00 942 2023 3 5.10710e+01 1.87002e+00 354 2023 4 5.93799e+01 7.40323e-01 82 2023 5 nan nan 0 2023 6 6.23175e+01 3.04012e-01 11 2023 7 6.14747e+01 6.72510e-01 139 2023 8 5.75267e+01 2.29557e-01 56 2023 9 5.19020e+01 3.46220e-03 4 2023 10 4.31442e+01 3.01281e+00 66 2023 11 3.75234e+01 1.00910e+00 94 2023 12 3.38901e+01 7.33794e-01 229 2024 1 3.69772e+01 1.95059e+00 230 2024 2 4.46208e+01 1.73870e+00 117 2024 3 5.17791e+01 1.01740e-01 64 2024 4 nan nan 0