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 1.95416e+01 2.70665e+00 128 2002 8 1.70336e+01 6.02854e+00 291 2002 9 1.63892e+01 1.92368e+00 268 2002 10 1.79096e+01 1.75381e+00 302 2002 11 1.83264e+01 2.92193e+00 903 2002 12 1.85786e+01 2.86921e+00 860 2003 1 2.00799e+01 4.15345e+00 846 2003 2 2.38815e+01 7.29120e+00 547 2003 3 2.24461e+01 3.96565e+00 635 2003 4 2.31256e+01 1.88939e+00 110 2003 5 2.73841e+01 6.23174e+00 250 2003 6 9.28735e+00 2.27859e-01 64 2003 7 1.53343e+01 1.37986e+00 84 2003 8 2.31534e+01 3.82107e+00 195 2003 9 2.24789e+01 2.25506e+00 195 2003 10 2.24446e+01 4.67795e+00 576 2003 11 1.45235e+01 3.74491e+00 262 2003 12 1.76085e+01 3.53369e+00 645 2004 1 1.92913e+01 3.75977e+00 994 2004 2 1.91428e+01 3.09590e+00 789 2004 3 2.69361e+01 4.03675e+00 564 2004 4 2.32170e+01 6.78674e+00 621 2004 5 2.39398e+01 2.18210e+00 128 2004 6 2.21659e+01 1.88428e+00 156 2004 7 1.89766e+01 7.52345e-01 97 2004 8 1.81113e+01 8.39682e+00 192 2004 9 1.18208e+01 5.76974e+00 284 2004 10 1.48961e+01 5.43752e+00 384 2004 11 2.09947e+01 2.75331e+00 463 2004 12 1.81906e+01 2.39394e+00 523 2005 1 2.07347e+01 4.20045e+00 418 2005 2 1.45602e+01 1.09780e+01 482 2005 3 2.47916e+01 6.82874e+00 759 2005 4 2.82298e+01 3.24267e+00 470 2005 5 2.51840e+01 1.37944e+00 128 2005 6 2.25309e+01 5.18251e-01 64 2005 7 1.92460e+01 1.99827e+00 139 2005 8 1.82036e+01 2.04274e+00 123 2005 9 2.45802e+01 4.75055e+00 387 2005 10 2.10197e+01 2.67924e+00 154 2005 11 1.68953e+01 3.94923e+00 484 2005 12 1.63693e+01 6.38781e+00 751 2006 1 2.21590e+01 3.64562e+00 781 2006 2 2.38518e+01 4.46434e+00 834 2006 3 2.27845e+01 3.83091e+00 416 2006 4 1.73317e+01 5.42325e+00 534 2006 5 2.64871e+01 1.94815e+00 313 2006 6 2.86460e+01 3.47327e+00 71 2006 7 1.50644e+01 4.03239e+00 133 2006 8 2.25458e+01 6.33265e+00 149 2006 9 2.03634e+01 5.70848e+00 441 2006 10 2.23091e+01 2.58987e+00 324 2006 11 1.87043e+01 4.97114e+00 732 2006 12 1.62117e+01 3.01679e+00 713 2007 1 1.57972e+01 3.47658e+00 975 2007 2 2.00807e+01 5.64822e+00 952 2007 3 3.31988e+01 9.13102e+00 237 2007 4 2.21018e+01 3.99125e+00 320 2007 5 2.72825e+01 3.92847e+00 179 2007 6 1.45671e+01 2.33493e+00 188 2007 7 1.70862e+01 3.89693e+00 140 2007 8 2.38891e+01 4.14606e+00 175 2007 9 1.83303e+01 5.05816e+00 344 2007 10 2.36640e+01 4.53368e+00 248 2007 11 1.90304e+01 4.62751e+00 547 2007 12 1.74629e+01 4.10900e+00 555 2008 1 1.50471e+01 3.93959e+00 680 2008 2 2.18574e+01 4.04352e+00 591 2008 3 2.44247e+01 1.40168e+00 322 2008 4 2.54034e+01 3.96199e+00 367 2008 5 2.44808e+01 7.85231e+00 400 2008 6 1.93256e+01 1.96452e+00 140 2008 7 2.83566e+01 8.67981e+00 317 2008 8 2.08866e+01 1.69795e+00 187 2008 9 1.73307e+01 2.05259e+00 256 2008 10 2.07159e+01 5.13458e+00 644 2008 11 1.85737e+01 2.65893e+00 578 2008 12 1.78623e+01 6.05121e+00 590 2009 1 2.04757e+01 4.85823e+00 810 2009 2 1.79337e+01 5.96886e+00 476 2009 3 1.96756e+01 4.62509e+00 324 2009 4 1.35156e+01 1.07596e+01 437 2009 5 9.08129e+00 5.59431e+00 192 2009 6 1.05045e+01 4.34563e-01 73 2009 7 1.93716e+01 4.35476e+00 168 2009 8 2.54543e+01 2.42955e+00 320 2009 9 1.84958e+01 2.87761e+00 469 2009 10 2.01552e+01 6.54971e+00 519 2009 11 2.00439e+01 4.80715e+00 535 2009 12 1.69623e+01 4.23843e+00 820 2010 1 1.59890e+01 5.53205e+00 787 2010 2 2.03568e+01 5.01352e+00 504 2010 3 2.61564e+01 6.34742e+00 546 2010 4 1.95103e+01 4.77281e+00 320 2010 5 1.76254e+01 3.70615e+00 84 2010 6 2.34851e+01 9.33728e-01 128 2010 7 1.04230e+01 2.11941e+00 256 2010 8 8.79357e+00 3.13758e+00 368 2010 9 1.59809e+01 2.02482e+00 271 2010 10 1.69175e+01 4.89398e+00 412 2010 11 1.26355e+01 3.55438e+00 431 2010 12 1.22183e+01 5.65054e+00 611 2011 1 2.06115e+01 3.33493e+00 717 2011 2 2.13756e+01 3.74974e+00 509 2011 3 1.98821e+01 4.65479e+00 523 2011 4 2.44973e+01 5.17653e+00 440 2011 5 2.73754e+01 3.35437e-01 4 2011 6 1.98720e+01 3.39080e+00 128 2011 7 1.97708e+01 1.67591e+00 157 2011 8 1.99236e+01 3.04578e+00 264 2011 9 2.05103e+01 2.16796e+00 258 2011 10 2.02101e+01 2.76509e+00 502 2011 11 2.03050e+01 1.72556e+00 499 2011 12 1.63419e+01 3.53550e+00 496 2012 1 1.77011e+01 5.70038e+00 897 2012 2 2.63027e+01 4.27527e+00 624 2012 3 2.49121e+01 5.37254e+00 305 2012 4 1.82759e+01 5.05610e+00 371 2012 5 2.48815e+01 1.27463e+00 256 2012 6 2.42505e+01 3.47408e+00 165 2012 7 1.64860e+01 1.64761e+00 221 2012 8 2.20656e+01 3.40683e+00 213 2012 9 1.64308e+01 2.94353e+00 287 2012 10 1.71459e+01 4.35005e+00 512 2012 11 1.88170e+01 2.76117e+00 834 2012 12 1.75895e+01 4.86594e+00 700 2013 1 1.35196e+01 4.91245e+00 589 2013 2 2.18965e+01 4.27433e+00 733 2013 3 2.04619e+01 6.51470e+00 625 2013 4 2.50836e+01 3.69652e+00 406 2013 5 2.65069e+01 2.87943e+00 238 2013 6 nan nan 0 2013 7 1.97424e+01 4.22667e+00 257 2013 8 1.52850e+01 3.80099e+00 331 2013 9 1.47539e+01 3.87106e+00 305 2013 10 1.81911e+01 2.02167e+00 223 2013 11 1.32279e+01 2.77184e+00 368 2013 12 1.49825e+01 1.43070e+00 815 2014 1 1.69933e+01 3.08900e+00 897 2014 2 2.06328e+01 3.15453e+00 529 2014 3 2.18385e+01 6.91267e+00 676 2014 4 2.37738e+01 6.65257e+00 406 2014 5 2.10860e+01 3.93239e+00 254 2014 6 2.44218e+01 4.65659e+00 286 2014 7 2.72349e+01 1.99039e+00 160 2014 8 2.66750e+01 5.00333e+00 250 2014 9 2.27444e+01 6.87856e+00 532 2014 10 1.50198e+01 2.98070e+00 585 2014 11 1.66291e+01 5.21488e+00 642 2014 12 1.88437e+01 4.37252e+00 781 2015 1 2.05066e+01 3.49757e+00 883 2015 2 1.86029e+01 5.56619e+00 556 2015 3 2.47221e+01 5.64940e+00 510 2015 4 2.56608e+01 4.65120e+00 451 2015 5 2.16461e+01 5.33318e+00 274 2015 6 2.63073e+01 4.78589e+00 103 2015 7 1.94080e+01 2.12595e+00 128 2015 8 2.10247e+01 2.55044e+00 411 2015 9 1.77425e+01 4.18618e+00 515 2015 10 1.82001e+01 4.32450e+00 601 2015 11 1.93928e+01 2.56441e+00 438 2015 12 2.05089e+01 3.73572e+00 532 2016 1 1.48970e+01 5.21154e+00 530 2016 2 1.71006e+01 4.60457e+00 743 2016 3 2.25399e+01 4.61299e+00 448 2016 4 2.58108e+01 5.23503e+00 421 2016 5 1.75624e+01 8.34831e-01 118 2016 6 2.89945e+01 4.02983e+00 192 2016 7 2.08332e+01 4.54529e+00 235 2016 8 2.25006e+01 2.69352e+00 220 2016 9 2.18862e+01 1.96214e+00 384 2016 10 1.69351e+01 5.43113e+00 192 2016 11 1.63144e+01 5.24682e+00 310 2016 12 1.79729e+01 4.65748e+00 468 2017 1 1.73381e+01 5.28474e+00 666 2017 2 2.40315e+01 4.45077e+00 722 2017 3 2.05562e+01 6.51795e+00 430 2017 4 2.07826e+01 3.81551e+00 203 2017 5 2.23956e+01 3.96069e+00 220 2017 6 2.40485e+01 7.58272e+00 312 2017 7 1.64766e+01 9.30559e+00 420 2017 8 1.13675e+01 1.79807e+00 184 2017 9 1.47396e+01 6.28725e+00 275 2017 10 1.89402e+01 3.31383e+00 192 2017 11 1.62568e+01 4.75410e+00 520 2017 12 1.69170e+01 3.47544e+00 735 2018 1 2.02249e+01 5.14702e+00 632 2018 2 2.10377e+01 4.55027e+00 380 2018 3 2.10589e+01 8.27202e+00 576 2018 4 2.78508e+01 4.19593e+00 320 2018 5 2.04363e+01 4.59916e+00 418 2018 6 1.70502e+01 3.66623e+00 281 2018 7 1.64126e+01 2.24101e+00 88 2018 8 2.34091e+01 3.44482e+00 294 2018 9 2.20475e+01 4.66875e+00 448 2018 10 1.02532e+01 3.39172e+00 539 2018 11 1.21762e+01 2.57784e+00 708 2018 12 1.88522e+01 2.84268e+00 783 2019 1 2.01365e+01 3.46708e+00 665 2019 2 2.22554e+01 5.98384e+00 697 2019 3 2.65759e+01 2.54319e+00 530 2019 4 2.67693e+01 4.79278e+00 532 2019 5 1.81520e+01 2.32645e+00 28 2019 6 2.43899e+01 1.84574e+00 75 2019 7 2.11923e+01 2.43090e+00 199 2019 8 2.56740e+01 4.07836e+00 512 2019 9 1.67596e+01 5.61725e+00 181 2019 10 2.19809e+01 2.96988e+00 647 2019 11 1.53197e+01 4.47620e+00 805 2019 12 1.61538e+01 3.26339e+00 587 2020 1 1.65187e+01 5.29105e+00 514 2020 2 1.71265e+01 5.42523e+00 465 2020 3 2.43002e+01 5.00630e+00 433 2020 4 2.66428e+01 5.56908e+00 716 2020 5 2.95746e+01 6.95018e+00 229 2020 6 2.39985e+01 4.37454e+00 569 2020 7 2.20079e+01 2.82185e+00 285 2020 8 2.48356e+01 6.52271e+00 267 2020 9 2.09634e+01 7.09865e+00 279 2020 10 1.48663e+01 4.40285e+00 325 2020 11 1.96538e+01 4.56123e+00 497 2020 12 1.81730e+01 5.70054e+00 752 2021 1 1.59765e+01 5.30761e+00 815 2021 2 2.63799e+01 5.13591e+00 714 2021 3 2.51233e+01 4.60740e+00 663 2021 4 2.27643e+01 7.01066e+00 428 2021 5 2.50665e+01 1.38286e+00 192 2021 6 nan nan 0 2021 7 1.89580e+01 8.47281e+00 190 2021 8 2.44031e+01 5.63169e+00 146 2021 9 1.85585e+01 2.73638e+00 337 2021 10 1.62134e+01 2.04210e+00 464 2021 11 1.26894e+01 2.68246e+00 751 2021 12 1.75403e+01 4.06319e+00 865 2022 1 1.99780e+01 4.71245e+00 1078 2022 2 1.88595e+01 5.67573e+00 621 2022 3 2.87026e+01 1.78991e+00 244 2022 4 2.61945e+01 8.20002e-01 7 2022 5 2.57898e+01 4.50412e+00 306 2022 6 2.81580e+01 5.91312e+00 438 2022 7 2.40622e+01 2.81623e+00 188 2022 8 2.14024e+01 3.26828e+00 384 2022 9 1.71370e+01 6.11601e+00 228 2022 10 1.99609e+01 2.89285e+00 285 2022 11 1.71799e+01 3.87717e+00 882 2022 12 1.71739e+01 4.04318e+00 1146 2023 1 1.64313e+01 4.00391e+00 693 2023 2 2.08244e+01 3.84437e+00 522 2023 3 2.27034e+01 5.25742e+00 964 2023 4 2.09314e+01 3.90307e+00 642 2023 5 1.72731e+01 2.97199e+00 610 2023 6 2.18816e+01 3.34809e+00 200 2023 7 nan nan 0 2023 8 2.03747e+01 5.63296e+00 336 2023 9 1.90619e+01 3.81915e+00 384 2023 10 2.15646e+01 4.43055e+00 475 2023 11 1.91761e+01 2.81505e+00 398 2023 12 1.96956e+01 4.87899e+00 809 2024 1 1.73829e+01 5.73899e+00 572 2024 2 2.04884e+01 4.38692e+00 722 2024 3 2.54594e+01 4.56667e+00 512 2024 4 2.51598e+01 1.96696e+00 128