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 4.68942e+00 1.21936e+00 106 2002 8 4.02588e+00 7.11393e-01 98 2002 9 7.42697e+00 2.19724e+00 159 2002 10 9.36977e+00 1.68704e+00 375 2002 11 9.27533e+00 4.33585e+00 351 2002 12 1.18826e+01 3.98412e+00 389 2003 1 2.29791e+01 8.62922e+00 596 2003 2 1.44055e+01 5.75646e+00 467 2003 3 5.75855e+00 7.41259e-01 58 2003 4 8.21425e+00 1.34903e+00 249 2003 5 5.89362e+00 8.91413e-01 140 2003 6 5.48968e+00 9.80758e-01 68 2003 7 6.91058e+00 9.01590e-01 22 2003 8 1.44829e+01 3.13445e+01 140 2003 9 9.64663e+00 2.51388e+00 187 2003 10 8.86268e+00 2.08567e+00 239 2003 11 9.31916e+00 3.65996e+00 284 2003 12 8.71290e+00 2.13482e+00 543 2004 1 8.23989e+00 5.16743e+00 437 2004 2 6.83100e+00 1.47816e+00 217 2004 3 7.36515e+00 2.22809e+00 208 2004 4 7.88361e+00 1.73975e+00 274 2004 5 4.42828e+00 1.88035e-01 126 2004 6 4.07447e+00 4.76621e-01 193 2004 7 4.70918e+00 1.08413e+00 131 2004 8 8.06960e+00 1.32843e+00 86 2004 9 nan nan 0 2004 10 3.18483e+01 1.78191e+01 426 2004 11 1.61363e+01 3.38136e+00 450 2004 12 1.64090e+01 1.16061e+01 338 2005 1 1.44091e+01 2.71367e+01 540 2005 2 6.48008e+00 1.73070e+00 453 2005 3 6.15136e+00 2.11264e+00 315 2005 4 8.02174e+00 2.43613e+00 495 2005 5 5.22592e+00 5.05067e-01 58 2005 6 3.96128e+00 5.21371e-01 92 2005 7 6.53218e+00 2.59730e+00 112 2005 8 7.06146e+00 8.64235e-01 86 2005 9 8.83140e+00 1.48650e+00 191 2005 10 8.16491e+00 7.86356e-01 428 2005 11 7.05554e+00 1.41603e+00 523 2005 12 4.58225e+00 1.44663e+00 545 2006 1 6.22018e+00 2.05338e+00 526 2006 2 5.94295e+00 2.42373e+00 518 2006 3 4.41166e+00 8.09957e-01 806 2006 4 3.85296e+00 1.09543e+00 226 2006 5 4.01954e+00 4.92034e-01 281 2006 6 4.01202e+00 8.19222e-01 203 2006 7 4.70161e+00 8.55774e-01 64 2006 8 6.08839e+00 2.34827e+00 223 2006 9 1.30519e+01 3.90312e+00 186 2006 10 1.06184e+01 3.55633e+00 546 2006 11 7.29945e+00 1.88880e+00 550 2006 12 5.22297e+00 1.66792e+00 291 2007 1 5.07522e+00 1.78199e+00 227 2007 2 4.43183e+00 1.00195e+00 320 2007 3 4.69366e+00 9.68095e-01 465 2007 4 5.60758e+00 1.20478e+00 222 2007 5 5.97672e+00 7.57791e-01 130 2007 6 4.63228e+00 5.18678e-01 89 2007 7 7.52082e+00 3.45878e-01 64 2007 8 6.62126e+00 2.04690e+00 149 2007 9 6.17969e+00 1.62853e+00 187 2007 10 6.23539e+00 1.05365e+00 201 2007 11 4.46432e+00 9.20300e-01 610 2007 12 4.65109e+00 1.08461e+00 620 2008 1 7.85986e+00 4.64595e+00 375 2008 2 4.95354e+00 1.27582e+00 379 2008 3 5.35769e+00 1.99578e+00 417 2008 4 8.17283e+00 2.73169e+00 365 2008 5 6.61945e+00 1.12491e+00 197 2008 6 4.06281e+00 7.24607e-01 63 2008 7 4.18025e+00 5.00029e-01 39 2008 8 1.06010e+01 1.35354e+00 116 2008 9 4.24081e+00 1.21429e+00 185 2008 10 8.15936e+00 4.86797e+00 431 2008 11 5.12504e+00 1.15137e+00 850 2008 12 4.97962e+00 1.01915e+00 492 2009 1 4.55451e+00 1.14556e+00 566 2009 2 4.69393e+00 1.28260e+00 526 2009 3 4.11411e+00 1.34275e+00 453 2009 4 5.46426e+00 1.34670e+00 199 2009 5 5.00406e+00 1.41522e+00 299 2009 6 5.86949e+00 6.80976e-01 44 2009 7 6.06782e+00 3.28878e-01 22 2009 8 7.04879e+00 3.32653e-01 56 2009 9 6.16566e+00 1.68286e+00 274 2009 10 7.29213e+00 1.58622e+00 463 2009 11 5.17262e+00 1.53332e+00 344 2009 12 9.00891e+00 2.91838e+00 184 2010 1 5.52682e+00 1.49545e+00 441 2010 2 6.67637e+00 2.89423e+00 463 2010 3 4.80518e+00 1.04850e+00 519 2010 4 7.62757e+00 2.34287e+00 327 2010 5 7.78920e+00 1.52464e+00 85 2010 6 4.46727e+00 1.42909e+00 141 2010 7 4.42545e+00 6.07997e-01 54 2010 8 8.72891e+00 5.96540e-01 51 2010 9 1.08992e+01 1.41737e+00 253 2010 10 9.51882e+00 2.46618e+00 722 2010 11 7.75807e+00 3.43232e+00 646 2010 12 8.07338e+00 3.46254e+00 744 2011 1 5.99727e+00 1.91291e+00 461 2011 2 3.93329e+00 9.40226e-01 441 2011 3 4.60482e+00 1.48617e+00 590 2011 4 6.24449e+00 2.74687e+00 445 2011 5 6.13230e+00 1.00313e+00 217 2011 6 6.06136e+00 4.70153e-01 80 2011 7 6.60002e+00 1.93250e+00 171 2011 8 1.09602e+01 1.52644e+00 65 2011 9 1.36358e+01 2.10688e+00 255 2011 10 1.08256e+01 1.53686e+00 371 2011 11 8.20549e+00 2.66053e+00 556 2011 12 7.01619e+00 1.72543e+00 665 2012 1 4.80499e+00 1.03161e+00 469 2012 2 4.96899e+00 2.69946e+00 323 2012 3 5.25341e+00 1.89062e+00 384 2012 4 5.39197e+00 1.44154e+00 211 2012 5 4.74129e+00 4.89171e-01 267 2012 6 nan nan 0 2012 7 nan nan 0 2012 8 1.17705e+01 5.29463e-01 64 2012 9 1.69295e+01 2.59332e+00 80 2012 10 1.64297e+01 3.18637e+00 384 2012 11 9.15798e+00 2.11671e+00 537 2012 12 6.60034e+00 2.90204e+00 376 2013 1 4.58489e+00 1.53993e+00 634 2013 2 4.39687e+00 1.14286e+00 414 2013 3 4.18496e+00 8.96672e-01 453 2013 4 4.56001e+00 1.05846e+00 299 2013 5 3.30473e+00 1.00092e+00 207 2013 6 6.53969e+00 2.32174e-01 98 2013 7 1.02097e+01 7.45278e-01 63 2013 8 7.56534e+00 2.78780e+00 111 2013 9 8.77574e+00 2.64358e+00 243 2013 10 9.77809e+00 3.09820e+00 657 2013 11 6.56781e+00 9.73594e-01 87 2013 12 5.60281e+00 1.40979e+00 511 2014 1 4.66398e+00 1.15110e+00 327 2014 2 3.90593e+00 8.99871e-01 426 2014 3 3.97055e+00 1.07702e+00 418 2014 4 3.36174e+00 6.87577e-01 396 2014 5 4.14868e+00 6.06637e-01 184 2014 6 5.20811e+00 7.77856e-01 128 2014 7 nan nan 0 2014 8 4.19616e+00 6.27912e-01 169 2014 9 6.34823e+00 1.51369e+00 169 2014 10 1.05759e+01 2.98451e+00 683 2014 11 8.38907e+00 1.96184e+00 512 2014 12 6.35900e+00 2.58765e+00 373 2015 1 4.87425e+00 1.38253e+00 268 2015 2 5.82855e+00 2.27030e+00 500 2015 3 6.31374e+00 1.61210e+00 491 2015 4 9.17885e+00 2.59485e+00 139 2015 5 4.93038e+00 8.75340e-01 264 2015 6 4.13869e+00 9.30900e-01 165 2015 7 nan nan 0 2015 8 1.63921e+01 3.75392e+00 54 2015 9 1.24265e+01 2.24283e+00 189 2015 10 8.01991e+00 1.88893e+00 249 2015 11 4.95877e+00 1.54603e+00 213 2015 12 7.60315e+00 2.49069e+00 220 2016 1 6.80911e+00 1.56661e+00 325 2016 2 8.09591e+00 6.92041e+00 751 2016 3 4.46117e+00 1.11670e+00 313 2016 4 3.75791e+00 1.22988e+00 229 2016 5 3.54033e+00 7.30473e-01 166 2016 6 3.74184e+00 6.54556e-01 66 2016 7 6.82751e+00 1.53266e+00 255 2016 8 6.53329e+00 2.92016e+00 214 2016 9 1.07064e+01 1.40294e+00 190 2016 10 7.32805e+00 2.13708e+00 460 2016 11 5.32092e+00 1.55597e+00 361 2016 12 5.88466e+00 2.12186e+00 479 2017 1 9.18682e+00 5.32443e+00 315 2017 2 4.41221e+00 1.22544e+00 892 2017 3 4.09888e+00 1.36038e+00 633 2017 4 3.44654e+00 6.16729e-01 283 2017 5 5.43240e+00 1.48509e+00 281 2017 6 4.59665e+00 7.66600e-01 62 2017 7 3.88581e+00 1.10159e+00 169 2017 8 3.94895e+00 1.48203e+00 86 2017 9 1.74684e+01 6.40461e+00 177 2017 10 1.03282e+01 1.47208e+00 101 2017 11 8.92395e+00 2.24345e+00 454 2017 12 7.33484e+00 3.02275e+00 414 2018 1 6.23999e+00 2.29033e+00 461 2018 2 5.23970e+00 1.24811e+00 447 2018 3 6.86736e+00 2.99163e+00 815 2018 4 8.61391e+00 3.54308e+00 431 2018 5 5.66850e+00 1.36630e+00 139 2018 6 4.19635e+00 1.11653e+00 173 2018 7 4.96135e+00 4.50302e-01 94 2018 8 7.20409e+00 2.49119e+00 268 2018 9 1.18604e+01 1.49093e+00 407 2018 10 7.47347e+00 2.43723e+00 617 2018 11 8.21652e+00 3.14296e+00 340 2018 12 6.62163e+00 2.28611e+00 461 2019 1 7.69860e+00 2.17914e+00 338 2019 2 6.62887e+00 1.56079e+00 474 2019 3 9.20721e+00 4.69707e+00 431 2019 4 7.83769e+00 2.72956e+00 303 2019 5 5.27429e+00 6.15794e-01 127 2019 6 6.15065e+00 3.03388e-01 36 2019 7 4.77365e+00 8.68561e-01 68 2019 8 1.41068e+01 6.51463e-01 64 2019 9 8.24581e+00 2.23762e+00 175 2019 10 6.85145e+00 2.77763e+00 280 2019 11 7.61603e+00 1.63521e+00 329 2019 12 8.66443e+00 2.01328e+00 167 2020 1 7.39274e+00 4.61547e+00 486 2020 2 7.93065e+00 2.85001e+00 319 2020 3 1.06853e+01 4.29924e+00 483 2020 4 9.74170e+00 9.08402e-01 121 2020 5 3.40691e+00 7.85982e-01 385 2020 6 5.20810e+00 9.06512e-01 139 2020 7 5.55557e+00 2.43458e+00 86 2020 8 5.27193e+00 1.90138e+00 136 2020 9 8.27303e+00 5.30865e-01 55 2020 10 8.68249e+00 1.81501e+00 340 2020 11 1.48576e+01 7.28547e+00 362 2020 12 6.22666e+00 1.49735e+00 267 2021 1 6.64353e+00 3.10773e+00 451 2021 2 8.11344e+00 6.16819e+00 505 2021 3 8.26357e+00 1.59409e+00 248 2021 4 7.85584e+00 2.12200e+00 263 2021 5 4.93945e+00 2.83645e+00 370 2021 6 3.20620e+00 2.73243e-01 64 2021 7 1.22683e+01 1.37672e+00 38 2021 8 5.83651e+00 1.55075e+00 124 2021 9 9.87811e+00 2.28927e+00 345 2021 10 1.05625e+01 2.54274e+00 364 2021 11 8.96249e+00 4.07780e+00 490 2021 12 7.58967e+00 1.34383e+00 407 2022 1 1.21653e+01 1.49255e+01 548 2022 2 4.29647e+00 1.19114e+00 615 2022 3 1.20071e+01 7.02717e+00 484 2022 4 6.27526e+00 3.18347e-01 33 2022 5 4.81780e+00 1.32606e+00 345 2022 6 5.86190e+00 7.31071e-01 123 2022 7 4.01777e+00 6.22075e-01 64 2022 8 2.93270e+00 1.28781e+00 46 2022 9 1.01838e+01 4.15067e+00 189 2022 10 8.06689e+00 2.27193e+00 738 2022 11 7.06922e+00 1.12246e+00 329 2022 12 8.52200e+00 1.65429e+00 507 2023 1 7.62511e+00 2.23053e+00 588 2023 2 6.37915e+00 1.91622e+00 634 2023 3 9.40120e+00 2.65094e+00 534 2023 4 6.12639e+00 1.60140e+00 273 2023 5 3.63170e+00 1.13819e+00 209 2023 6 3.90795e+00 9.51888e-01 167 2023 7 3.44624e+00 1.37648e+00 142 2023 8 3.19087e+00 1.23565e+00 122 2023 9 4.50281e+00 8.20892e-01 269 2023 10 6.14719e+00 2.42829e+00 435 2023 11 6.75023e+00 2.33176e+00 533 2023 12 3.42109e+00 9.01405e-01 234 2024 1 3.97362e+00 1.30477e+00 239 2024 2 3.63032e+00 9.38758e-01 563 2024 3 6.85748e+00 2.86712e+00 351 2024 4 nan nan 0