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 5.93109e+01 1.66965e-01 15 2002 8 5.77985e+01 5.03396e-02 12 2002 9 5.62926e+01 8.00446e-01 129 2002 10 4.90043e+01 1.97207e+00 376 2002 11 4.36379e+01 1.68489e+00 680 2002 12 3.98119e+01 2.39286e-01 566 2003 1 4.21763e+01 1.05566e+00 411 2003 2 4.75753e+01 1.59496e+00 467 2003 3 5.41093e+01 1.63355e+00 437 2003 4 nan nan 0 2003 5 5.96480e+01 1.97774e-01 28 2003 6 5.99544e+01 5.16706e-02 44 2003 7 5.89650e+01 1.65957e-01 39 2003 8 5.86683e+01 1.47562e-01 128 2003 9 5.48093e+01 1.29482e+00 163 2003 10 4.98524e+01 2.25316e+00 308 2003 11 4.30958e+01 1.83337e+00 430 2003 12 3.98228e+01 3.79578e-01 457 2004 1 4.22648e+01 1.23947e+00 566 2004 2 4.74234e+01 2.16881e+00 511 2004 3 5.47643e+01 2.02574e+00 272 2004 4 5.88536e+01 7.29436e-01 269 2004 5 5.98779e+01 5.00260e-02 57 2004 6 5.97105e+01 3.92662e-01 33 2004 7 5.89903e+01 1.69154e-01 34 2004 8 5.78574e+01 3.30476e-01 110 2004 9 5.31682e+01 2.00692e-02 57 2004 10 5.08918e+01 1.13461e+00 280 2004 11 4.20528e+01 1.42487e+00 286 2004 12 3.99002e+01 3.86209e-01 508 2005 1 4.21000e+01 1.76468e+00 180 2005 2 4.81863e+01 2.04310e+00 325 2005 3 5.47671e+01 1.34189e+00 287 2005 4 5.97299e+01 3.39994e-02 41 2005 5 5.99483e+01 4.77042e-02 80 2005 6 nan nan 0 2005 7 nan nan 0 2005 8 5.73408e+01 7.35422e-02 64 2005 9 5.49731e+01 2.24217e-02 64 2005 10 4.75381e+01 9.29094e-01 198 2005 11 4.37983e+01 1.50965e+00 321 2005 12 3.99754e+01 3.95738e-01 624 2006 1 4.16570e+01 1.11745e+00 261 2006 2 4.91469e+01 1.22992e+00 390 2006 3 5.47465e+01 1.42695e+00 458 2006 4 5.94281e+01 2.74210e-01 84 2006 5 5.98736e+01 1.84077e-01 63 2006 6 5.96100e+01 4.29776e-01 47 2006 7 5.91081e+01 4.02800e-01 66 2006 8 5.83534e+01 3.18597e-02 31 2006 9 5.41870e+01 7.38353e-01 299 2006 10 4.90247e+01 1.78639e+00 189 2006 11 4.36827e+01 1.48374e+00 594 2006 12 3.97557e+01 2.82945e-01 517 2007 1 4.18483e+01 1.55014e+00 654 2007 2 4.73574e+01 1.53488e+00 569 2007 3 5.57212e+01 1.06962e-02 22 2007 4 5.82048e+01 2.80135e-01 128 2007 5 5.98852e+01 8.73216e-02 61 2007 6 nan nan 0 2007 7 5.93529e+01 1.48563e-01 23 2007 8 5.87672e+01 3.32350e-01 105 2007 9 5.46109e+01 9.37500e-01 59 2007 10 4.85620e+01 7.98188e-01 152 2007 11 4.22025e+01 9.43947e-01 230 2007 12 3.97907e+01 3.20165e-01 610 2008 1 4.21091e+01 1.28729e+00 639 2008 2 4.74804e+01 1.51523e+00 436 2008 3 5.49154e+01 1.41909e+00 229 2008 4 5.86150e+01 4.68916e-01 198 2008 5 5.98604e+01 1.66797e-01 128 2008 6 5.97914e+01 4.32654e-01 16 2008 7 5.91260e+01 2.17395e-01 177 2008 8 5.90256e+01 6.60638e-02 53 2008 9 5.55830e+01 6.69483e-01 126 2008 10 4.99632e+01 1.91871e+00 319 2008 11 4.33561e+01 1.49282e+00 550 2008 12 3.98640e+01 3.05379e-01 549 2009 1 4.25304e+01 1.70548e+00 608 2009 2 4.83122e+01 1.87583e+00 277 2009 3 5.45167e+01 2.23334e+00 161 2009 4 5.85720e+01 6.61741e-01 421 2009 5 5.97879e+01 6.91879e-02 56 2009 6 nan nan 0 2009 7 5.93876e+01 3.72887e-01 133 2009 8 5.88793e+01 9.03980e-02 56 2009 9 5.53815e+01 1.03841e+00 158 2009 10 4.92819e+01 1.55785e+00 359 2009 11 4.37867e+01 1.79356e+00 640 2009 12 3.99263e+01 4.08963e-01 600 2010 1 4.22099e+01 1.52457e+00 441 2010 2 4.68369e+01 1.35574e+00 427 2010 3 5.48275e+01 1.62421e+00 234 2010 4 5.73928e+01 1.13731e-01 65 2010 5 nan nan 0 2010 6 5.97709e+01 4.23879e-01 129 2010 7 nan nan 0 2010 8 5.81942e+01 5.79093e-01 82 2010 9 5.60084e+01 4.58844e-01 152 2010 10 4.83523e+01 9.83849e-01 252 2010 11 4.26585e+01 8.82014e-01 295 2010 12 4.02039e+01 4.14221e-01 390 2011 1 4.30740e+01 9.87335e-01 608 2011 2 4.77788e+01 2.10128e+00 334 2011 3 5.43009e+01 1.83645e+00 538 2011 4 5.87339e+01 7.08819e-01 275 2011 5 5.97086e+01 1.67274e-01 68 2011 6 nan nan 0 2011 7 5.87934e+01 1.52945e-01 64 2011 8 5.82320e+01 8.57077e-01 100 2011 9 5.48275e+01 1.48876e+00 165 2011 10 4.91826e+01 2.18000e+00 532 2011 11 4.30643e+01 9.08084e-01 339 2011 12 4.00101e+01 3.87798e-01 478 2012 1 4.14930e+01 1.11858e+00 566 2012 2 4.85319e+01 1.67192e+00 572 2012 3 5.36994e+01 1.32985e+00 405 2012 4 5.86561e+01 6.23320e-01 173 2012 5 5.95030e+01 4.05848e-01 187 2012 6 5.98246e+01 4.29527e-01 41 2012 7 5.89436e+01 1.51815e-01 34 2012 8 5.84976e+01 1.56774e-01 16 2012 9 5.63055e+01 1.11115e+00 206 2012 10 4.92892e+01 2.58741e+00 113 2012 11 4.34809e+01 1.80330e+00 406 2012 12 3.97794e+01 1.33016e-01 447 2013 1 4.14380e+01 1.52488e+00 372 2013 2 4.78337e+01 2.10712e+00 282 2013 3 5.45780e+01 1.66454e+00 246 2013 4 5.88871e+01 4.52841e-01 312 2013 5 5.99728e+01 7.03989e-02 97 2013 6 nan nan 0 2013 7 5.91787e+01 2.05690e-01 39 2013 8 nan nan 0 2013 9 5.39313e+01 4.60523e-01 112 2013 10 5.11428e+01 1.44088e+00 105 2013 11 4.36309e+01 1.03862e+00 521 2013 12 3.97752e+01 2.33658e-01 331 2014 1 4.26557e+01 1.26125e+00 644 2014 2 4.77608e+01 1.66835e+00 580 2014 3 5.43636e+01 1.68390e+00 494 2014 4 5.81061e+01 5.36298e-01 265 2014 5 5.96567e+01 1.14143e-01 111 2014 6 5.97564e+01 4.01779e-01 57 2014 7 5.90645e+01 1.54170e-01 40 2014 8 5.89076e+01 6.38521e-02 55 2014 9 5.53740e+01 9.97933e-01 246 2014 10 4.92337e+01 1.88746e+00 383 2014 11 4.27536e+01 1.37971e+00 560 2014 12 3.98317e+01 3.51713e-01 655 2015 1 4.21734e+01 1.30069e+00 457 2015 2 4.67558e+01 1.59075e+00 324 2015 3 5.44795e+01 1.69215e+00 290 2015 4 5.85679e+01 6.60414e-01 299 2015 5 5.99576e+01 4.22540e-02 53 2015 6 nan nan 0 2015 7 5.90714e+01 1.63568e-01 56 2015 8 5.86480e+01 3.74343e-01 177 2015 9 5.54841e+01 1.52943e+00 186 2015 10 4.83114e+01 1.54506e+00 329 2015 11 4.38107e+01 1.74264e+00 241 2015 12 3.97526e+01 2.15761e-01 436 2016 1 4.12843e+01 9.29523e-01 325 2016 2 4.80367e+01 2.36972e+00 700 2016 3 5.37565e+01 1.69476e+00 232 2016 4 5.86042e+01 3.89467e-01 284 2016 5 5.98599e+01 4.71242e-02 64 2016 6 5.97463e+01 4.31766e-01 47 2016 7 5.93349e+01 1.56336e-01 72 2016 8 nan nan 0 2016 9 5.53719e+01 1.06124e+00 229 2016 10 4.89048e+01 1.23540e+00 250 2016 11 4.26019e+01 1.40344e+00 156 2016 12 3.98166e+01 2.01234e-01 388 2017 1 4.18264e+01 1.45016e+00 529 2017 2 4.77453e+01 1.85035e+00 537 2017 3 5.41350e+01 1.73832e+00 309 2017 4 5.81256e+01 9.10717e-01 161 2017 5 5.97586e+01 1.21942e-01 208 2017 6 5.96638e+01 4.44158e-01 174 2017 7 5.91236e+01 1.67057e-01 54 2017 8 5.88482e+01 7.46647e-02 115 2017 9 5.54317e+01 6.39344e-01 91 2017 10 5.07735e+01 1.45270e+00 193 2017 11 4.32222e+01 2.02242e+00 388 2017 12 3.98554e+01 4.07777e-01 541 2018 1 4.21430e+01 1.34241e+00 376 2018 2 4.79522e+01 1.79934e+00 377 2018 3 5.31380e+01 8.66367e-01 88 2018 4 5.81531e+01 8.86137e-01 198 2018 5 5.99879e+01 4.51104e-02 68 2018 6 5.96504e+01 4.43897e-01 103 2018 7 5.91365e+01 1.54020e-01 60 2018 8 5.82034e+01 9.86268e-02 113 2018 9 5.53445e+01 1.39278e+00 276 2018 10 4.75296e+01 8.33077e-01 329 2018 11 4.31680e+01 1.63527e+00 621 2018 12 3.99871e+01 4.06623e-01 616 2019 1 4.18105e+01 1.34121e+00 827 2019 2 4.83408e+01 1.89173e+00 477 2019 3 5.54812e+01 1.38931e+00 304 2019 4 5.84874e+01 9.21325e-01 299 2019 5 5.97529e+01 7.90993e-02 47 2019 6 nan nan 0 2019 7 nan nan 0 2019 8 5.82107e+01 4.48348e-01 48 2019 9 5.65748e+01 8.56996e-02 28 2019 10 4.90853e+01 1.44518e+00 321 2019 11 4.35128e+01 1.47457e+00 667 2019 12 4.00497e+01 4.67879e-01 645 2020 1 4.18590e+01 1.53424e+00 506 2020 2 4.72976e+01 2.07341e+00 429 2020 3 5.45567e+01 2.40131e+00 170 2020 4 5.88696e+01 6.64447e-01 321 2020 5 5.99163e+01 9.75334e-02 145 2020 6 5.96199e+01 4.42332e-01 116 2020 7 5.90335e+01 1.59282e-01 58 2020 8 5.88700e+01 7.11927e-02 64 2020 9 5.50584e+01 1.15173e+00 169 2020 10 4.93611e+01 8.51819e-01 298 2020 11 4.27520e+01 1.25371e+00 351 2020 12 3.98048e+01 3.64675e-01 655 2021 1 4.22633e+01 1.33555e+00 560 2021 2 4.86181e+01 1.98370e+00 398 2021 3 5.43706e+01 1.74454e+00 384 2021 4 5.90703e+01 3.81901e-01 121 2021 5 5.98708e+01 1.20809e-01 106 2021 6 nan nan 0 2021 7 5.91257e+01 4.87359e-01 102 2021 8 5.91296e+01 1.43918e-01 45 2021 9 5.44682e+01 1.02331e+00 166 2021 10 5.03802e+01 1.81960e+00 152 2021 11 4.34191e+01 1.64777e+00 661 2021 12 3.97565e+01 2.53032e-01 465 2022 1 4.21941e+01 1.42362e+00 770 2022 2 4.82287e+01 2.14201e+00 363 2022 3 5.34051e+01 1.19938e+00 228 2022 4 nan nan 0 2022 5 5.99351e+01 4.57910e-02 54 2022 6 5.97794e+01 3.67802e-01 140 2022 7 nan nan 0 2022 8 5.83217e+01 1.00594e-01 23 2022 9 5.55642e+01 1.63315e+00 106 2022 10 5.07896e+01 1.40226e+00 359 2022 11 4.27275e+01 1.29988e+00 494 2022 12 3.98918e+01 3.25480e-01 919 2023 1 4.20550e+01 1.54562e+00 851 2023 2 4.81891e+01 2.16765e+00 498 2023 3 5.45291e+01 1.84142e+00 515 2023 4 5.88731e+01 9.08322e-01 209 2023 5 5.97635e+01 1.23429e-01 79 2023 6 5.96969e+01 4.18472e-01 33 2023 7 5.87336e+01 1.55408e-01 16 2023 8 5.85394e+01 2.70027e-01 114 2023 9 5.58999e+01 9.96151e-01 218 2023 10 5.06297e+01 6.36377e-01 127 2023 11 4.25493e+01 1.44284e+00 341 2023 12 4.02599e+01 4.47067e-01 506 2024 1 4.13593e+01 1.02095e+00 470 2024 2 4.82304e+01 2.01176e+00 445 2024 3 5.38000e+01 1.38391e+00 351 2024 4 nan nan 0