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 2.21252e+01 6.95202e+00 106 2002 8 2.68176e+01 4.70181e+00 96 2002 9 1.91650e+01 4.56005e+00 159 2002 10 1.36660e+01 3.58681e+00 375 2002 11 1.16001e+01 4.70844e+00 351 2002 12 7.05155e+00 6.53899e+00 353 2003 1 2.32963e+00 1.19075e+00 596 2003 2 6.48048e+00 4.14328e+00 467 2003 3 1.96479e+01 2.79828e+00 58 2003 4 1.09851e+01 2.27451e+00 249 2003 5 1.57382e+01 2.05955e+00 140 2003 6 2.13623e+01 1.52130e+00 68 2003 7 2.02715e+01 4.87677e+00 22 2003 8 5.45815e+00 6.47883e+00 140 2003 9 6.15561e+00 4.84942e+00 187 2003 10 3.75782e+00 3.09826e+00 239 2003 11 5.63617e+00 5.67272e+00 284 2003 12 6.89658e+00 3.18413e+00 543 2004 1 8.71658e+00 3.86708e+00 437 2004 2 1.05808e+01 3.11192e+00 217 2004 3 1.11805e+01 3.74827e+00 208 2004 4 1.01176e+01 3.41550e+00 274 2004 5 1.59122e+01 1.33022e+00 126 2004 6 1.88297e+01 5.85360e+00 193 2004 7 2.42744e+01 3.16650e+00 131 2004 8 9.97794e+00 3.93619e+00 86 2004 9 nan nan 0 2004 10 1.96188e+00 2.45570e+00 343 2004 11 3.42987e+00 1.81169e+00 449 2004 12 5.28423e+00 2.67625e+00 338 2005 1 9.13821e+00 4.09188e+00 540 2005 2 1.48102e+01 4.85435e+00 453 2005 3 1.49037e+01 5.88997e+00 315 2005 4 1.26937e+01 3.39256e+00 495 2005 5 2.24952e+01 2.43015e+00 58 2005 6 3.17135e+01 4.79819e+00 92 2005 7 2.12767e+01 1.09376e+01 112 2005 8 2.13176e+01 1.13758e+01 86 2005 9 1.26452e+01 4.20432e+00 191 2005 10 1.04966e+01 1.86795e+00 428 2005 11 1.16250e+01 3.32454e+00 523 2005 12 1.53986e+01 6.75581e+00 545 2006 1 1.65373e+01 6.60566e+00 526 2006 2 1.81699e+01 6.66631e+00 518 2006 3 2.18710e+01 4.73211e+00 806 2006 4 2.43343e+01 7.30608e+00 226 2006 5 2.45001e+01 3.40074e+00 281 2006 6 2.82848e+01 9.22879e+00 199 2006 7 1.99648e+01 5.11385e+00 64 2006 8 1.91899e+01 1.11865e+01 223 2006 9 6.54043e+00 6.40964e+00 176 2006 10 7.45634e+00 3.70552e+00 546 2006 11 1.26040e+01 3.29474e+00 550 2006 12 1.96700e+01 6.14811e+00 291 2007 1 1.57482e+01 6.22862e+00 227 2007 2 1.99345e+01 5.99796e+00 320 2007 3 2.10119e+01 5.34772e+00 465 2007 4 1.82623e+01 4.48237e+00 222 2007 5 1.97085e+01 3.19292e+00 130 2007 6 2.32148e+01 1.66311e+00 89 2007 7 1.16059e+01 1.02057e+00 64 2007 8 1.01743e+01 8.43528e+00 149 2007 9 1.73075e+01 6.63088e+00 187 2007 10 2.02178e+01 6.31945e+00 201 2007 11 1.80304e+01 6.19796e+00 610 2007 12 1.97793e+01 5.94666e+00 620 2008 1 1.43592e+01 7.58174e+00 375 2008 2 2.03002e+01 5.59072e+00 379 2008 3 2.07716e+01 6.78473e+00 417 2008 4 1.47101e+01 6.31502e+00 365 2008 5 1.76945e+01 3.69524e+00 197 2008 6 2.76661e+01 6.33576e+00 63 2008 7 2.39488e+01 5.20077e+00 39 2008 8 1.05154e+01 3.90066e+00 116 2008 9 2.44281e+01 9.91297e+00 185 2008 10 1.40082e+01 8.27696e+00 430 2008 11 1.82098e+01 5.62100e+00 850 2008 12 1.96292e+01 5.16573e+00 492 2009 1 2.11299e+01 5.96557e+00 566 2009 2 2.12561e+01 6.24391e+00 526 2009 3 2.59646e+01 6.87661e+00 453 2009 4 2.10373e+01 6.56485e+00 199 2009 5 2.41789e+01 6.47777e+00 299 2009 6 2.01250e+01 2.35983e+00 44 2009 7 9.41047e-02 1.33567e-01 22 2009 8 1.08859e+01 6.59314e-01 56 2009 9 1.94618e+01 1.39007e+01 274 2009 10 8.78401e+00 3.44061e+00 463 2009 11 1.05807e+01 6.24249e+00 344 2009 12 1.04433e+01 4.46511e+00 184 2010 1 1.64068e+01 4.64214e+00 441 2010 2 1.51653e+01 5.11201e+00 463 2010 3 1.98215e+01 5.10560e+00 519 2010 4 1.38659e+01 5.04351e+00 327 2010 5 1.36765e+01 1.94823e+00 85 2010 6 1.82482e+01 6.31425e+00 141 2010 7 1.35061e+01 8.73552e+00 54 2010 8 9.55270e+00 9.36663e-01 51 2010 9 7.27660e+00 2.18667e+00 253 2010 10 8.66819e+00 3.26890e+00 722 2010 11 1.07870e+01 5.10628e+00 646 2010 12 1.08514e+01 5.52574e+00 744 2011 1 1.43909e+01 4.49979e+00 461 2011 2 2.48330e+01 6.47411e+00 441 2011 3 2.14940e+01 6.80612e+00 590 2011 4 1.54936e+01 7.60288e+00 445 2011 5 1.65057e+01 3.23548e+00 217 2011 6 1.04925e+01 3.64210e+00 80 2011 7 1.68880e+01 6.08997e+00 171 2011 8 4.19811e+00 4.57035e+00 60 2011 9 3.36232e+00 2.19690e+00 255 2011 10 5.29665e+00 2.17843e+00 371 2011 11 1.02754e+01 7.39266e+00 556 2011 12 1.09550e+01 6.19716e+00 665 2012 1 1.61797e+01 6.19758e+00 469 2012 2 1.80750e+01 7.27358e+00 323 2012 3 2.03528e+01 1.02024e+01 384 2012 4 1.84610e+01 6.40406e+00 211 2012 5 2.52555e+01 5.71255e+00 267 2012 6 nan nan 0 2012 7 nan nan 0 2012 8 7.26856e+00 5.60535e-01 64 2012 9 4.26842e+00 1.38755e+00 80 2012 10 3.16420e+00 1.92863e+00 384 2012 11 8.28480e+00 3.52184e+00 537 2012 12 1.44376e+01 1.29122e+01 376 2013 1 1.64912e+01 1.00425e+01 634 2013 2 1.61848e+01 5.32710e+00 414 2013 3 2.06429e+01 6.01075e+00 453 2013 4 2.38042e+01 6.24992e+00 299 2013 5 2.59151e+01 7.71823e+00 205 2013 6 1.43090e+01 4.16010e+00 98 2013 7 3.23801e+00 3.09089e+00 63 2013 8 2.12941e+01 2.46310e+01 111 2013 9 7.58084e+00 4.22502e+00 243 2013 10 8.40186e+00 5.24925e+00 657 2013 11 1.37453e+01 3.63683e+00 87 2013 12 1.00021e+01 4.92057e+00 511 2014 1 1.74967e+01 5.97583e+00 327 2014 2 1.88047e+01 8.09092e+00 426 2014 3 1.90584e+01 6.65651e+00 418 2014 4 2.37649e+01 7.62755e+00 396 2014 5 2.35694e+01 5.46636e+00 184 2014 6 2.27562e+01 5.09220e+00 128 2014 7 nan nan 0 2014 8 1.74227e+01 6.22280e+00 169 2014 9 1.69680e+01 6.33997e+00 169 2014 10 7.00418e+00 2.83148e+00 678 2014 11 7.41088e+00 4.77094e+00 512 2014 12 1.01577e+01 5.13200e+00 373 2015 1 1.51505e+01 5.31435e+00 268 2015 2 1.32662e+01 5.38837e+00 500 2015 3 1.57333e+01 6.30875e+00 491 2015 4 1.11813e+01 6.01020e+00 139 2015 5 2.06241e+01 4.36672e+00 264 2015 6 2.02130e+01 6.74167e+00 165 2015 7 nan nan 0 2015 8 4.25737e+00 4.71171e+00 54 2015 9 9.92277e+00 1.35494e+01 188 2015 10 8.99274e+00 9.48169e+00 247 2015 11 1.36174e+01 5.30316e+00 213 2015 12 1.33692e+01 7.25211e+00 217 2016 1 1.22316e+01 3.42316e+00 325 2016 2 1.33459e+01 6.52321e+00 751 2016 3 1.88550e+01 5.85545e+00 313 2016 4 1.61040e+01 7.71511e+00 223 2016 5 1.67107e+01 9.59431e+00 166 2016 6 3.24039e+01 7.36094e+00 66 2016 7 1.54402e+01 5.22181e+00 255 2016 8 1.95576e+01 1.31418e+01 214 2016 9 7.57384e+00 1.90594e+00 190 2016 10 8.26041e+00 6.61050e+00 460 2016 11 7.03418e+00 4.86454e+00 361 2016 12 1.22551e+01 5.36208e+00 479 2017 1 1.37071e+01 6.58611e+00 315 2017 2 1.98691e+01 7.72331e+00 892 2017 3 2.46756e+01 9.92006e+00 633 2017 4 2.77677e+01 5.43632e+00 283 2017 5 2.19759e+01 7.57218e+00 281 2017 6 1.91539e+01 6.10536e+00 62 2017 7 2.63869e+01 5.20799e+00 169 2017 8 3.20023e+01 1.63972e+01 86 2017 9 6.41997e+00 4.59525e+00 177 2017 10 2.36891e+00 2.67351e+00 99 2017 11 5.98243e+00 3.90543e+00 454 2017 12 1.07570e+01 7.07200e+00 414 2018 1 1.36337e+01 5.35228e+00 461 2018 2 1.89633e+01 5.22424e+00 447 2018 3 1.44071e+01 4.63430e+00 815 2018 4 1.22287e+01 5.22776e+00 431 2018 5 1.99403e+01 5.14947e+00 139 2018 6 2.61809e+01 6.95214e+00 173 2018 7 2.29897e+01 2.17259e+00 94 2018 8 1.46169e+01 6.94765e+00 268 2018 9 7.70627e+00 2.56950e+00 407 2018 10 9.67945e+00 5.44466e+00 617 2018 11 8.05954e+00 4.41194e+00 340 2018 12 1.31304e+01 6.48474e+00 461 2019 1 1.03284e+01 4.85176e+00 338 2019 2 1.24154e+01 5.57934e+00 474 2019 3 1.22660e+01 8.72664e+00 431 2019 4 1.37209e+01 4.45156e+00 303 2019 5 2.14722e+01 3.24921e+00 127 2019 6 1.62467e+01 4.93008e-01 36 2019 7 3.00769e+01 1.06898e+01 68 2019 8 4.50659e+00 4.74120e-01 64 2019 9 1.34695e+01 2.06454e+01 175 2019 10 1.15171e+01 1.10850e+01 280 2019 11 9.88809e+00 4.23020e+00 329 2019 12 1.06258e+01 4.22462e+00 167 2020 1 1.20060e+01 5.40537e+00 486 2020 2 1.20343e+01 4.33448e+00 319 2020 3 1.05269e+01 5.67347e+00 483 2020 4 9.75637e+00 1.35089e+00 121 2020 5 2.02625e+01 1.01005e+01 385 2020 6 2.16657e+01 4.62004e+00 139 2020 7 1.36115e+01 3.76505e+00 86 2020 8 1.67542e+01 6.70978e+00 132 2020 9 6.90592e+00 6.11711e-01 55 2020 10 8.49405e+00 3.52486e+00 340 2020 11 5.58391e+00 4.57121e+00 362 2020 12 1.14354e+01 4.31121e+00 267 2021 1 1.05814e+01 4.20291e+00 451 2021 2 1.39951e+01 5.56669e+00 505 2021 3 1.21158e+01 2.94933e+00 248 2021 4 1.37450e+01 4.89246e+00 263 2021 5 2.35524e+01 8.83812e+00 370 2021 6 3.18094e+01 2.11022e+00 64 2021 7 5.57979e+00 2.52551e+00 38 2021 8 1.11948e+01 1.03049e+01 122 2021 9 8.53349e+00 4.95478e+00 345 2021 10 7.30395e+00 2.65269e+00 364 2021 11 6.57093e+00 5.25701e+00 479 2021 12 8.45432e+00 3.83595e+00 407 2022 1 1.18923e+01 5.42768e+00 548 2022 2 2.07267e+01 7.31340e+00 615 2022 3 1.10376e+01 5.85828e+00 484 2022 4 1.87936e+01 1.65553e+00 33 2022 5 2.31753e+01 4.92296e+00 345 2022 6 1.99738e+01 2.09412e+00 123 2022 7 2.93839e+01 4.78995e+00 64 2022 8 3.84195e+01 1.00646e+01 43 2022 9 1.18167e+01 6.08419e+00 189 2022 10 9.67077e+00 5.37731e+00 733 2022 11 1.10285e+01 5.82166e+00 329 2022 12 1.01669e+01 3.65956e+00 507 2023 1 1.04494e+01 3.30127e+00 588 2023 2 1.40471e+01 4.59020e+00 634 2023 3 1.23952e+01 6.63687e+00 534 2023 4 1.89144e+01 5.35301e+00 273 2023 5 2.80744e+01 7.49723e+00 209 2023 6 2.33380e+01 5.08913e+00 167 2023 7 2.68152e+01 8.71530e+00 142 2023 8 2.99399e+01 7.47555e+00 122 2023 9 2.08070e+01 1.33930e+01 269 2023 10 1.77416e+01 1.03235e+01 432 2023 11 1.46017e+01 6.60995e+00 533 2023 12 2.43384e+01 6.68340e+00 234 2024 1 2.12482e+01 7.08534e+00 239 2024 2 2.44234e+01 7.63167e+00 563 2024 3 1.82273e+01 1.07196e+01 351 2024 4 nan nan 0