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 6.06865e+01 4.04665e-03 64 2002 8 nan nan 0 2002 9 5.53506e+01 1.03060e-02 64 2002 10 4.84422e+01 1.13795e+00 396 2002 11 4.37105e+01 1.79879e+00 638 2002 12 3.97907e+01 3.52608e-01 539 2003 1 4.24809e+01 1.50199e+00 405 2003 2 4.83526e+01 1.05529e+00 204 2003 3 5.48100e+01 1.61243e+00 323 2003 4 nan nan 0 2003 5 6.04208e+01 4.66390e-03 5 2003 6 nan nan 0 2003 7 nan nan 0 2003 8 5.95158e+01 3.19586e-03 64 2003 9 5.52962e+01 1.49773e+00 286 2003 10 4.87836e+01 2.12687e+00 283 2003 11 4.34492e+01 1.93918e+00 400 2003 12 3.96925e+01 3.18607e-01 493 2004 1 4.22873e+01 9.51959e-01 397 2004 2 4.73308e+01 2.36133e+00 487 2004 3 5.44748e+01 1.98000e+00 398 2004 4 5.93168e+01 6.13881e-01 274 2004 5 6.03268e+01 1.22800e-01 25 2004 6 nan nan 0 2004 7 nan nan 0 2004 8 5.81642e+01 6.99328e-03 46 2004 9 5.40589e+01 6.23310e-01 148 2004 10 5.00069e+01 1.65406e+00 185 2004 11 4.16891e+01 1.25714e+00 255 2004 12 3.97770e+01 3.97822e-01 553 2005 1 4.32438e+01 1.29579e+00 150 2005 2 4.80467e+01 1.93510e+00 562 2005 3 5.46755e+01 8.64598e-01 287 2005 4 5.95800e+01 6.77045e-01 283 2005 5 6.07452e+01 6.66734e-02 154 2005 6 nan nan 0 2005 7 nan nan 0 2005 8 5.80461e+01 1.39229e-01 66 2005 9 5.51593e+01 6.32484e-01 68 2005 10 4.80393e+01 1.00460e+00 128 2005 11 4.29956e+01 1.40804e+00 450 2005 12 3.98820e+01 3.39574e-01 705 2006 1 4.20978e+01 1.34727e+00 215 2006 2 4.90988e+01 1.44042e+00 446 2006 3 5.37974e+01 1.41999e+00 391 2006 4 5.85155e+01 1.44668e+00 142 2006 5 6.05256e+01 2.12048e-01 158 2006 6 nan nan 0 2006 7 6.04266e+01 1.28708e-01 192 2006 8 5.89315e+01 6.58818e-03 64 2006 9 5.57651e+01 1.07089e+00 149 2006 10 4.99816e+01 1.24148e+00 154 2006 11 4.31055e+01 1.26020e+00 415 2006 12 3.96692e+01 1.96578e-01 376 2007 1 4.21838e+01 1.73919e+00 384 2007 2 4.67977e+01 1.37821e+00 268 2007 3 5.49435e+01 1.61085e+00 62 2007 4 5.91437e+01 7.01948e-03 64 2007 5 nan nan 0 2007 6 nan nan 0 2007 7 6.05018e+01 8.24732e-03 64 2007 8 5.97311e+01 6.27477e-03 64 2007 9 5.54807e+01 1.31718e+00 129 2007 10 4.83143e+01 5.31749e-01 159 2007 11 4.15512e+01 3.80942e-01 176 2007 12 3.96443e+01 2.17202e-01 732 2008 1 4.22515e+01 1.38289e+00 724 2008 2 4.72058e+01 1.59073e+00 442 2008 3 5.43193e+01 1.60412e+00 228 2008 4 5.93376e+01 5.15616e-01 140 2008 5 6.07349e+01 2.93529e-03 64 2008 6 6.06919e+01 2.15006e-03 64 2008 7 6.05954e+01 1.77621e-02 75 2008 8 5.88286e+01 8.97450e-01 128 2008 9 5.54411e+01 4.23314e-01 78 2008 10 5.04550e+01 1.65325e+00 294 2008 11 4.23854e+01 1.43984e+00 482 2008 12 3.97673e+01 3.02764e-01 548 2009 1 4.24229e+01 1.64901e+00 540 2009 2 4.74341e+01 1.49372e+00 264 2009 3 5.55192e+01 1.24638e+00 177 2009 4 5.89501e+01 6.61527e-01 149 2009 5 6.07104e+01 6.47325e-02 74 2009 6 nan nan 0 2009 7 6.05085e+01 1.80576e-01 215 2009 8 5.94971e+01 5.26065e-01 175 2009 9 5.60092e+01 1.05523e+00 88 2009 10 4.90773e+01 1.75537e+00 312 2009 11 4.31609e+01 1.54893e+00 387 2009 12 3.98776e+01 4.01077e-01 428 2010 1 4.11213e+01 1.31366e+00 392 2010 2 4.72960e+01 1.19822e+00 351 2010 3 5.50241e+01 5.27978e-01 79 2010 4 5.89313e+01 3.77096e-03 3 2010 5 6.05303e+01 2.28927e-02 64 2010 6 6.06738e+01 2.75846e-02 64 2010 7 nan nan 0 2010 8 5.81443e+01 3.92350e-03 30 2010 9 5.57324e+01 2.04570e-03 64 2010 10 4.89286e+01 1.68832e+00 236 2010 11 4.24275e+01 1.05860e+00 384 2010 12 3.99534e+01 3.58997e-01 554 2011 1 4.23850e+01 1.25493e+00 549 2011 2 4.81295e+01 2.14701e+00 209 2011 3 5.38722e+01 1.57952e+00 353 2011 4 5.90404e+01 4.70776e-01 344 2011 5 6.03712e+01 1.13154e-01 130 2011 6 6.08300e+01 1.02884e-02 13 2011 7 nan nan 0 2011 8 nan nan 0 2011 9 5.57323e+01 1.62910e+00 245 2011 10 4.89648e+01 1.89203e+00 329 2011 11 4.25652e+01 1.64735e+00 307 2011 12 3.99180e+01 3.65500e-01 517 2012 1 4.15383e+01 1.46106e+00 552 2012 2 4.79168e+01 1.85055e+00 482 2012 3 5.36171e+01 1.43464e+00 420 2012 4 5.84913e+01 6.41269e-01 89 2012 5 6.04006e+01 8.41358e-02 141 2012 6 nan nan 0 2012 7 nan nan 0 2012 8 nan nan 0 2012 9 5.58805e+01 1.27613e+00 238 2012 10 4.69547e+01 1.46836e+00 155 2012 11 4.36341e+01 1.10498e+00 214 2012 12 3.96871e+01 1.91259e-01 426 2013 1 4.19565e+01 1.62913e+00 294 2013 2 4.75379e+01 2.12067e+00 291 2013 3 5.49917e+01 5.82869e-01 127 2013 4 5.96592e+01 2.51981e-01 125 2013 5 6.05070e+01 1.98539e-01 192 2013 6 nan nan 0 2013 7 6.04541e+01 6.45981e-02 124 2013 8 5.99220e+01 0.00000e+00 1 2013 9 5.44459e+01 1.71672e-01 143 2013 10 4.92863e+01 2.57776e+00 196 2013 11 4.26877e+01 1.16933e+00 505 2013 12 3.97674e+01 3.41987e-01 493 2014 1 4.17608e+01 1.42550e+00 479 2014 2 4.77509e+01 2.07488e+00 337 2014 3 5.51158e+01 1.60000e+00 232 2014 4 5.88910e+01 1.00910e+00 186 2014 5 6.04031e+01 1.07540e-02 27 2014 6 nan nan 0 2014 7 nan nan 0 2014 8 5.83278e+01 3.66584e-03 16 2014 9 5.54083e+01 3.56981e-01 139 2014 10 4.85303e+01 1.83121e+00 292 2014 11 4.34895e+01 1.55489e+00 341 2014 12 3.97322e+01 3.33433e-01 559 2015 1 4.19829e+01 1.54216e+00 585 2015 2 4.74891e+01 1.96631e+00 358 2015 3 5.46563e+01 1.31711e+00 323 2015 4 5.85923e+01 1.07398e+00 41 2015 5 6.04535e+01 2.24347e-01 26 2015 6 nan nan 0 2015 7 nan nan 0 2015 8 5.90749e+01 3.35804e-03 49 2015 9 5.54738e+01 1.63472e+00 327 2015 10 4.74804e+01 1.22452e+00 280 2015 11 4.30193e+01 1.72695e+00 257 2015 12 3.97323e+01 2.60857e-01 468 2016 1 4.14108e+01 7.80579e-01 415 2016 2 4.79953e+01 2.14217e+00 388 2016 3 5.46834e+01 1.39465e-01 65 2016 4 5.91182e+01 2.37846e-01 243 2016 5 6.07189e+01 2.80486e-03 64 2016 6 6.08166e+01 1.34753e-02 44 2016 7 nan nan 0 2016 8 5.86877e+01 3.80631e-03 64 2016 9 nan nan 0 2016 10 4.82778e+01 9.67198e-01 371 2016 11 4.32503e+01 1.91749e+00 218 2016 12 3.97665e+01 2.20000e-01 488 2017 1 4.24023e+01 1.47812e+00 493 2017 2 4.78614e+01 2.15751e+00 493 2017 3 5.45068e+01 2.14512e+00 412 2017 4 5.84700e+01 6.83442e-01 168 2017 5 6.05364e+01 8.39251e-02 128 2017 6 6.07159e+01 3.29578e-03 64 2017 7 6.01815e+01 4.76968e-03 8 2017 8 5.95668e+01 6.77147e-03 64 2017 9 5.58920e+01 7.04364e-01 128 2017 10 4.83918e+01 3.21870e-01 66 2017 11 4.27451e+01 2.18232e+00 294 2017 12 3.97972e+01 3.61346e-01 592 2018 1 4.22695e+01 1.58857e+00 459 2018 2 4.68406e+01 8.42167e-01 188 2018 3 5.42004e+01 1.87459e+00 303 2018 4 5.78574e+01 5.38526e-03 62 2018 5 6.07893e+01 3.15224e-03 8 2018 6 nan nan 0 2018 7 6.04772e+01 5.08213e-03 64 2018 8 6.00718e+01 1.13386e-02 52 2018 9 5.58271e+01 1.43656e+00 252 2018 10 4.76204e+01 8.19189e-01 348 2018 11 4.29016e+01 1.26696e+00 374 2018 12 3.97981e+01 2.78440e-01 537 2019 1 4.18273e+01 1.46338e+00 553 2019 2 4.65727e+01 1.47306e+00 211 2019 3 5.43598e+01 1.14957e+00 232 2019 4 5.83465e+01 9.65385e-01 128 2019 5 6.01536e+01 7.99566e-04 5 2019 6 6.08433e+01 2.39268e-02 58 2019 7 6.04794e+01 3.82250e-03 64 2019 8 5.99843e+01 1.66657e-03 7 2019 9 5.56671e+01 1.18487e+00 209 2019 10 4.93185e+01 1.79184e+00 379 2019 11 4.36174e+01 1.85910e+00 578 2019 12 4.00328e+01 3.62256e-01 486 2020 1 4.24513e+01 1.58065e+00 430 2020 2 4.73285e+01 1.91680e+00 500 2020 3 5.34088e+01 2.09940e+00 229 2020 4 5.89416e+01 5.11366e-01 137 2020 5 6.08382e+01 1.52522e-02 64 2020 6 6.06522e+01 1.38856e-02 64 2020 7 6.04249e+01 6.01972e-03 64 2020 8 5.96016e+01 7.73119e-03 64 2020 9 5.47785e+01 1.16127e+00 233 2020 10 4.90606e+01 1.62765e-01 128 2020 11 4.20502e+01 1.14494e+00 432 2020 12 3.96711e+01 2.84901e-01 607 2021 1 4.21300e+01 1.44220e+00 610 2021 2 4.78755e+01 1.93585e+00 486 2021 3 5.40921e+01 1.73118e+00 400 2021 4 5.91613e+01 2.95946e-03 64 2021 5 6.01650e+01 2.07003e-02 16 2021 6 nan nan 0 2021 7 6.05986e+01 8.56659e-02 105 2021 8 5.98784e+01 1.16374e-02 64 2021 9 5.44591e+01 7.08143e-01 108 2021 10 4.95578e+01 2.47780e+00 309 2021 11 4.30991e+01 1.68717e+00 642 2021 12 3.96214e+01 2.52281e-01 421 2022 1 4.21604e+01 1.41635e+00 500 2022 2 4.89429e+01 1.14334e+00 294 2022 3 5.28096e+01 1.11654e+00 254 2022 4 5.97122e+01 1.29244e-02 53 2022 5 6.04722e+01 2.84627e-03 25 2022 6 6.08223e+01 3.01172e-03 64 2022 7 6.03709e+01 7.16534e-03 34 2022 8 5.84219e+01 3.17069e-03 64 2022 9 5.60223e+01 1.54369e+00 199 2022 10 5.20773e+01 9.07803e-01 113 2022 11 4.28865e+01 1.68597e+00 720 2022 12 3.97344e+01 2.50568e-01 689 2023 1 4.17627e+01 1.18640e+00 562 2023 2 4.81553e+01 2.26643e+00 266 2023 3 5.40632e+01 1.11949e+00 614 2023 4 5.93137e+01 1.01348e+00 210 2023 5 6.07273e+01 7.90684e-02 216 2023 6 6.08531e+01 2.86290e-02 79 2023 7 nan nan 0 2023 8 5.82692e+01 2.17109e-02 5 2023 9 5.66444e+01 8.08214e-01 194 2023 10 4.91717e+01 1.32796e+00 146 2023 11 4.28973e+01 1.89722e+00 264 2023 12 3.99190e+01 4.31737e-01 677 2024 1 4.18526e+01 9.96543e-01 480 2024 2 4.77344e+01 1.97318e+00 618 2024 3 5.38996e+01 1.05702e+00 216 2024 4 5.75170e+01 1.73110e-03 4