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 6.01875e+01 2.06603e-01 57 2002 8 nan nan 0 2002 9 nan nan 0 2002 10 4.91509e+01 1.64633e+00 192 2002 11 4.37997e+01 1.94684e+00 334 2002 12 4.01035e+01 4.16624e-01 385 2003 1 4.19353e+01 1.23860e+00 521 2003 2 4.78359e+01 1.82533e-01 66 2003 3 5.49607e+01 6.69700e-01 150 2003 4 nan nan 0 2003 5 nan nan 0 2003 6 nan nan 0 2003 7 6.02117e+01 2.17181e-01 64 2003 8 nan nan 0 2003 9 5.58443e+01 1.41028e+00 167 2003 10 5.05390e+01 2.05331e+00 329 2003 11 4.33982e+01 1.96619e+00 355 2003 12 4.00923e+01 4.36796e-01 502 2004 1 4.25431e+01 1.30104e+00 518 2004 2 4.74034e+01 2.40958e+00 322 2004 3 5.54833e+01 1.75960e+00 186 2004 4 5.87901e+01 5.91011e-01 181 2004 5 nan nan 0 2004 6 nan nan 0 2004 7 nan nan 0 2004 8 nan nan 0 2004 9 5.43292e+01 5.71320e-01 131 2004 10 5.07474e+01 6.49531e-01 146 2004 11 4.32906e+01 1.76381e+00 398 2004 12 4.00241e+01 4.27124e-01 236 2005 1 4.25783e+01 7.81943e-01 89 2005 2 4.75650e+01 1.02837e+00 372 2005 3 5.49192e+01 1.70642e+00 277 2005 4 5.93795e+01 8.70393e-01 86 2005 5 6.06568e+01 8.36795e-02 189 2005 6 nan nan 0 2005 7 nan nan 0 2005 8 nan nan 0 2005 9 5.47320e+01 4.42215e-01 128 2005 10 4.73952e+01 3.18088e-01 50 2005 11 4.26459e+01 7.96987e-01 410 2005 12 4.03443e+01 4.91702e-01 654 2006 1 4.10024e+01 6.38506e-01 228 2006 2 4.86611e+01 2.10684e+00 435 2006 3 5.43793e+01 1.64486e+00 302 2006 4 5.97413e+01 2.90701e-01 104 2006 5 6.05839e+01 1.47931e-01 142 2006 6 nan nan 0 2006 7 6.01895e+01 2.15149e-01 63 2006 8 nan nan 0 2006 9 5.41632e+01 8.59685e-01 114 2006 10 5.08183e+01 3.46544e-01 128 2006 11 4.41332e+01 1.77481e+00 264 2006 12 3.98312e+01 1.89568e-01 362 2007 1 4.25031e+01 1.44315e+00 623 2007 2 4.75763e+01 1.29056e+00 445 2007 3 5.66443e+01 5.03763e-01 70 2007 4 5.92910e+01 4.12224e-01 151 2007 5 6.07681e+01 8.35886e-03 17 2007 6 nan nan 0 2007 7 nan nan 0 2007 8 nan nan 0 2007 9 5.56795e+01 1.40089e+00 128 2007 10 5.15769e+01 3.33055e-01 63 2007 11 4.34045e+01 2.02676e+00 287 2007 12 4.01779e+01 4.91483e-01 308 2008 1 4.23186e+01 1.27526e+00 611 2008 2 4.79406e+01 1.31624e+00 192 2008 3 5.58157e+01 1.08485e+00 195 2008 4 5.88785e+01 1.84507e-01 66 2008 5 6.06653e+01 1.24190e-01 184 2008 6 nan nan 0 2008 7 6.03475e+01 2.18136e-01 54 2008 8 5.76638e+01 2.67822e-01 105 2008 9 5.47017e+01 1.33950e+00 155 2008 10 4.96791e+01 1.11688e+00 208 2008 11 4.36273e+01 1.31989e+00 423 2008 12 4.01691e+01 4.07635e-01 436 2009 1 4.21373e+01 1.93362e+00 347 2009 2 4.82112e+01 1.76805e+00 192 2009 3 5.56054e+01 1.07787e+00 220 2009 4 5.82290e+01 6.78806e-01 101 2009 5 nan nan 0 2009 6 6.07504e+01 6.11090e-02 53 2009 7 5.99527e+01 2.34097e-01 15 2009 8 5.93967e+01 2.75827e-01 110 2009 9 5.56774e+01 1.27180e+00 92 2009 10 4.71014e+01 3.69165e-01 20 2009 11 4.29302e+01 1.56708e+00 476 2009 12 4.00274e+01 5.28761e-01 421 2010 1 4.20251e+01 1.50512e+00 322 2010 2 4.76970e+01 9.58358e-01 347 2010 3 5.53277e+01 9.08938e-01 176 2010 4 5.74300e+01 2.76655e-02 58 2010 5 nan nan 0 2010 6 6.05312e+01 2.17583e-01 97 2010 7 6.00605e+01 2.36547e-01 20 2010 8 5.87121e+01 6.85826e-01 76 2010 9 5.56721e+01 2.86842e-01 63 2010 10 4.98904e+01 1.07872e+00 248 2010 11 4.26110e+01 9.63110e-01 387 2010 12 4.03638e+01 5.20801e-01 583 2011 1 4.30043e+01 1.52948e+00 309 2011 2 4.86781e+01 1.78825e+00 329 2011 3 5.48259e+01 1.72302e+00 415 2011 4 5.92419e+01 2.36086e-01 106 2011 5 6.04069e+01 1.00288e-01 116 2011 6 nan nan 0 2011 7 nan nan 0 2011 8 nan nan 0 2011 9 5.51019e+01 1.82066e+00 144 2011 10 4.97957e+01 1.62020e+00 165 2011 11 4.25767e+01 1.75486e+00 233 2011 12 4.02766e+01 4.75298e-01 446 2012 1 4.21539e+01 1.31195e+00 704 2012 2 4.90921e+01 1.30699e+00 218 2012 3 5.54037e+01 6.04182e-01 129 2012 4 5.92147e+01 4.63499e-01 123 2012 5 6.04533e+01 5.30338e-02 64 2012 6 6.06957e+01 1.46728e-01 64 2012 7 nan nan 0 2012 8 nan nan 0 2012 9 5.68621e+01 9.27875e-01 192 2012 10 4.92506e+01 2.85360e+00 128 2012 11 4.32819e+01 1.80098e+00 453 2012 12 4.00133e+01 2.59418e-01 405 2013 1 4.10049e+01 2.75339e-01 180 2013 2 4.87648e+01 1.75717e+00 235 2013 3 5.48721e+01 5.91786e-01 106 2013 4 5.98956e+01 2.59356e-02 10 2013 5 6.05140e+01 1.11092e-01 128 2013 6 nan nan 0 2013 7 5.99803e+01 2.17977e-01 39 2013 8 nan nan 0 2013 9 5.51128e+01 7.21519e-01 134 2013 10 4.83837e+01 1.10978e+00 35 2013 11 4.35694e+01 1.19906e+00 306 2013 12 4.02197e+01 5.23897e-01 375 2014 1 4.18395e+01 1.21560e+00 272 2014 2 4.80360e+01 1.27407e+00 333 2014 3 5.42659e+01 1.34537e+00 305 2014 4 5.86198e+01 2.39597e-01 107 2014 5 6.02963e+01 5.74142e-02 64 2014 6 nan nan 0 2014 7 6.00115e+01 2.43502e-01 35 2014 8 nan nan 0 2014 9 5.34362e+01 2.07411e-01 20 2014 10 4.86294e+01 1.44889e+00 200 2014 11 4.28629e+01 1.89851e+00 374 2014 12 4.02555e+01 4.83387e-01 474 2015 1 4.23491e+01 1.71785e+00 370 2015 2 4.71969e+01 2.03199e+00 297 2015 3 5.40376e+01 1.66733e+00 302 2015 4 5.93537e+01 8.74169e-01 177 2015 5 6.02703e+01 1.07502e-02 64 2015 6 nan nan 0 2015 7 nan nan 0 2015 8 nan nan 0 2015 9 5.72977e+01 2.49234e-01 64 2015 10 4.80010e+01 9.72306e-01 205 2015 11 4.32149e+01 5.53203e-01 134 2015 12 4.02252e+01 4.24757e-01 209 2016 1 4.15641e+01 1.38835e+00 368 2016 2 4.63278e+01 9.82356e-01 218 2016 3 5.41116e+01 9.37648e-01 97 2016 4 5.91528e+01 1.26933e-01 85 2016 5 6.06376e+01 1.60875e-01 16 2016 6 nan nan 0 2016 7 nan nan 0 2016 8 5.94162e+01 2.56194e-01 24 2016 9 5.55922e+01 3.14996e-01 89 2016 10 4.72810e+01 4.82104e-01 53 2016 11 4.33608e+01 1.65703e+00 303 2016 12 4.00407e+01 3.26045e-01 442 2017 1 4.24526e+01 1.46053e+00 724 2017 2 4.83069e+01 8.44863e-01 252 2017 3 5.56899e+01 1.50087e+00 282 2017 4 5.82989e+01 7.08275e-01 127 2017 5 6.05426e+01 8.52133e-02 144 2017 6 6.06340e+01 0.00000e+00 6 2017 7 6.02459e+01 2.07409e-01 44 2017 8 5.93584e+01 2.76857e-01 64 2017 9 5.58080e+01 7.90800e-01 126 2017 10 5.12958e+01 1.62212e+00 88 2017 11 4.34279e+01 2.19094e+00 319 2017 12 4.01405e+01 4.57643e-01 325 2018 1 4.19383e+01 1.59611e+00 351 2018 2 4.87337e+01 1.05837e-01 13 2018 3 5.42093e+01 2.03582e+00 440 2018 4 5.80588e+01 1.40234e-01 192 2018 5 nan nan 0 2018 6 6.07319e+01 5.88739e-02 64 2018 7 6.03755e+01 1.86495e-01 59 2018 8 nan nan 0 2018 9 5.61629e+01 3.07985e-01 77 2018 10 4.78281e+01 7.87853e-01 264 2018 11 4.29716e+01 1.56892e+00 669 2018 12 4.01819e+01 3.61885e-01 485 2019 1 4.17095e+01 1.07963e+00 277 2019 2 4.84232e+01 1.29535e+00 207 2019 3 5.34565e+01 1.35399e+00 138 2019 4 5.91640e+01 1.02299e+00 241 2019 5 6.07323e+01 5.77063e-03 20 2019 6 6.06087e+01 1.61958e-01 28 2019 7 5.98630e+01 6.99997e-03 2 2019 8 5.84559e+01 2.44659e-01 64 2019 9 nan nan 0 2019 10 4.94958e+01 1.29780e+00 301 2019 11 4.33751e+01 1.47518e+00 572 2019 12 4.01514e+01 4.74437e-01 423 2020 1 4.23123e+01 1.62590e+00 475 2020 2 4.80194e+01 2.16328e+00 409 2020 3 5.30037e+01 1.90405e+00 227 2020 4 5.81111e+01 5.47618e-01 132 2020 5 6.06532e+01 5.35850e-02 64 2020 6 6.05074e+01 1.70943e-01 13 2020 7 nan nan 0 2020 8 5.96264e+01 2.75302e-01 49 2020 9 5.40434e+01 7.96166e-01 173 2020 10 4.90979e+01 1.37886e+00 227 2020 11 4.20026e+01 9.85430e-01 151 2020 12 4.01146e+01 4.78753e-01 576 2021 1 4.23622e+01 1.23057e+00 614 2021 2 4.70099e+01 1.96407e+00 382 2021 3 5.40960e+01 1.65234e+00 137 2021 4 5.91508e+01 2.48873e-02 66 2021 5 6.01015e+01 1.27898e-02 39 2021 6 nan nan 0 2021 7 6.02510e+01 2.99835e-03 2 2021 8 5.96434e+01 2.63347e-01 18 2021 9 5.33650e+01 5.01719e-01 92 2021 10 4.94458e+01 1.93973e+00 282 2021 11 4.31112e+01 1.56884e+00 456 2021 12 3.98965e+01 2.52604e-01 359 2022 1 4.23578e+01 1.32628e+00 789 2022 2 4.66312e+01 1.48723e+00 282 2022 3 5.45001e+01 6.79300e-02 75 2022 4 5.98953e+01 2.99044e-02 64 2022 5 6.03213e+01 6.41614e-02 64 2022 6 6.06638e+01 1.64208e-01 9 2022 7 nan nan 0 2022 8 nan nan 0 2022 9 5.65285e+01 3.37826e-01 85 2022 10 5.06850e+01 1.94889e+00 271 2022 11 4.36199e+01 1.47306e+00 347 2022 12 4.02017e+01 4.39403e-01 646 2023 1 4.21299e+01 9.88724e-01 607 2023 2 4.92970e+01 1.98083e+00 276 2023 3 5.38615e+01 1.65018e+00 628 2023 4 5.99956e+01 1.99000e-01 129 2023 5 6.06220e+01 7.66503e-02 90 2023 6 6.05350e+01 1.59758e-01 189 2023 7 nan nan 0 2023 8 5.95950e+01 2.03586e-01 64 2023 9 5.71790e+01 5.41131e-01 63 2023 10 5.03031e+01 1.33763e+00 183 2023 11 4.32573e+01 1.53231e+00 342 2023 12 4.04424e+01 5.53560e-01 574 2024 1 4.19405e+01 1.20430e+00 700 2024 2 4.77689e+01 2.05586e+00 563 2024 3 5.46707e+01 1.85050e+00 362 2024 4 5.78619e+01 1.52267e-01 83