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 2.90029e+00 2.51477e+00 87 2002 8 3.08150e+00 2.39098e+00 154 2002 9 3.16484e+00 1.47200e+00 94 2002 10 3.74881e+00 1.98660e+00 365 2002 11 5.59906e+00 3.55036e+00 430 2002 12 4.78204e+00 3.44787e+00 327 2003 1 6.60708e+00 1.87494e+00 552 2003 2 5.20950e+00 2.78483e+00 389 2003 3 2.51826e+01 1.05707e+01 25 2003 4 1.69008e+01 8.55523e+00 107 2003 5 nan nan 0 2003 6 nan nan 0 2003 7 9.85192e+00 3.75503e+00 38 2003 8 8.49960e+00 6.60258e+00 49 2003 9 4.64224e+00 2.08770e+00 123 2003 10 4.86403e+00 2.36372e+00 369 2003 11 4.31812e+00 2.89637e+00 565 2003 12 7.40621e+00 3.50085e+00 463 2004 1 4.65266e+00 2.14729e+00 427 2004 2 4.87149e+00 1.75313e+00 128 2004 3 6.89143e+00 4.82720e+00 477 2004 4 7.01323e+00 2.62772e+00 259 2004 5 4.22562e+00 3.64246e+00 181 2004 6 2.87723e+00 1.61048e+00 179 2004 7 4.93937e+00 1.73728e+00 19 2004 8 3.09649e+00 2.85255e+00 93 2004 9 nan nan 0 2004 10 5.90576e+00 4.35096e+00 134 2004 11 9.98091e+00 6.44531e+00 118 2004 12 7.62636e+00 2.92609e+00 219 2005 1 7.31411e+00 3.31513e+00 292 2005 2 7.36350e+00 5.40781e+00 218 2005 3 6.19450e+00 3.46571e+00 267 2005 4 9.40676e+00 5.51979e+00 196 2005 5 7.80502e+00 2.78161e+00 51 2005 6 7.03180e+00 4.87751e+00 136 2005 7 nan nan 0 2005 8 nan nan 0 2005 9 4.90148e+00 2.76698e+00 190 2005 10 5.91934e+00 3.17389e+00 256 2005 11 4.61575e+00 2.04314e+00 402 2005 12 4.97664e+00 2.55100e+00 321 2006 1 9.58552e+00 8.39891e+00 381 2006 2 9.37910e+00 3.82272e+00 482 2006 3 7.35849e+00 2.74695e+00 724 2006 4 4.70186e+00 1.94436e+00 122 2006 5 3.59639e+00 1.66184e+00 126 2006 6 2.32040e+00 8.52427e-01 142 2006 7 2.04766e+00 1.62613e+00 20 2006 8 3.46741e+00 5.21460e+00 46 2006 9 3.94474e+00 1.94282e+00 236 2006 10 4.91609e+00 3.25835e+00 276 2006 11 4.22006e+00 1.96207e+00 380 2006 12 3.24786e+00 4.74311e+00 290 2007 1 3.34694e+00 1.18189e+00 318 2007 2 3.33742e+00 1.05309e+00 511 2007 3 2.72170e+00 9.31544e-01 676 2007 4 3.10183e+00 9.27133e-01 249 2007 5 2.94316e+00 6.79467e-01 44 2007 6 3.69394e+00 1.07614e+00 63 2007 7 2.45944e+00 1.07425e+00 49 2007 8 3.74622e+00 8.11337e-01 108 2007 9 3.73946e+00 2.35329e+00 140 2007 10 4.37287e+00 3.50759e+00 230 2007 11 2.26345e+00 1.11165e+00 572 2007 12 2.39396e+00 8.75778e-01 330 2008 1 3.49969e+00 1.64136e+00 361 2008 2 2.75751e+00 1.26199e+00 605 2008 3 3.08168e+00 8.06562e-01 425 2008 4 4.92005e+00 1.81935e+00 298 2008 5 3.59786e+00 1.00980e+00 190 2008 6 2.84578e+00 1.18885e+00 133 2008 7 2.76746e+00 8.37799e-01 48 2008 8 4.56571e+00 2.91664e+00 94 2008 9 4.92014e+00 3.04171e+00 163 2008 10 4.41608e+00 2.13171e+00 453 2008 11 4.53021e+00 2.80772e+00 377 2008 12 4.30964e+00 1.86441e+00 450 2009 1 5.16769e+00 3.02205e+00 344 2009 2 3.89444e+00 1.16606e+00 624 2009 3 3.95694e+00 2.18024e+00 447 2009 4 3.52412e+00 1.22437e+00 218 2009 5 5.91667e+00 2.93993e+00 104 2009 6 3.70376e+00 1.10908e+00 43 2009 7 3.82974e+00 1.16142e+00 53 2009 8 5.85690e+00 2.66269e+00 141 2009 9 3.84126e+00 1.56665e+00 117 2009 10 5.34730e+00 2.31263e+00 363 2009 11 3.04413e+00 3.36139e+00 254 2009 12 2.64798e+00 7.01732e-01 163 2010 1 5.60403e+00 2.37657e+00 442 2010 2 1.49431e+01 8.86777e+00 280 2010 3 2.18420e+01 1.06855e+01 213 2010 4 7.54786e+00 3.14633e+00 173 2010 5 5.44974e+00 2.00952e+00 125 2010 6 3.16784e+00 9.35693e-01 49 2010 7 6.00498e+00 2.47516e+00 76 2010 8 1.56982e+00 4.98899e-01 15 2010 9 3.99506e+00 2.85499e+00 108 2010 10 3.69895e+00 1.72993e+00 714 2010 11 3.91113e+00 3.79274e+00 614 2010 12 4.25847e+00 3.37414e+00 433 2011 1 3.52784e+00 1.49155e+00 402 2011 2 2.69948e+00 1.15363e+00 356 2011 3 3.44083e+00 1.26675e+00 577 2011 4 3.22210e+00 6.69927e-01 341 2011 5 2.67553e+00 1.00413e+00 173 2011 6 nan nan 0 2011 7 3.79343e+00 2.65218e+00 46 2011 8 2.98941e+00 7.07726e-01 66 2011 9 3.03392e+00 1.29676e+00 223 2011 10 2.88583e+00 1.22410e+00 450 2011 11 3.20383e+00 1.37690e+00 486 2011 12 2.67289e+00 1.49505e+00 572 2012 1 3.65437e+00 1.60744e+00 570 2012 2 3.35305e+00 9.54669e-01 112 2012 3 2.51455e+00 1.60560e+00 614 2012 4 2.86568e+00 1.29803e+00 342 2012 5 2.36826e+00 1.64027e+00 181 2012 6 1.76906e+00 4.19663e-01 57 2012 7 7.61808e+00 2.66343e+00 39 2012 8 1.71785e+01 5.72959e+00 27 2012 9 1.67347e+01 7.20998e+00 93 2012 10 1.14465e+01 6.80336e+00 252 2012 11 9.79845e+00 5.78680e+00 500 2012 12 5.98890e+00 2.09468e+00 200 2013 1 4.43497e+00 1.85376e+00 298 2013 2 5.21692e+00 2.22635e+00 305 2013 3 5.98056e+00 2.04384e+00 386 2013 4 4.36022e+00 1.52253e+00 256 2013 5 4.19137e+00 2.63028e+00 125 2013 6 3.07341e+00 1.96921e+00 133 2013 7 1.01080e+01 3.59685e+00 5 2013 8 nan nan 0 2013 9 1.54286e+01 8.06112e+00 180 2013 10 9.00777e+00 5.51899e+00 308 2013 11 6.47389e+00 3.74511e+00 272 2013 12 3.61210e+00 1.99301e+00 473 2014 1 5.65247e+00 3.39993e+00 394 2014 2 4.37123e+00 2.03600e+00 505 2014 3 8.18929e+00 3.29956e+00 450 2014 4 8.42118e+00 6.88607e+00 79 2014 5 7.18133e+00 7.50831e+00 7 2014 6 4.25752e+00 1.06222e+00 26 2014 7 7.58271e+00 5.30537e+00 143 2014 8 3.37746e+00 1.19537e+00 51 2014 9 nan nan 0 2014 10 4.16454e+00 2.03874e+00 688 2014 11 4.52577e+00 1.94756e+00 558 2014 12 2.56061e+00 1.47235e+00 445 2015 1 3.61056e+00 3.82379e+00 402 2015 2 5.78020e+00 2.37994e+00 444 2015 3 5.33780e+00 1.65276e+00 293 2015 4 4.66018e+00 1.75173e+00 67 2015 5 3.26577e+00 1.01729e+00 159 2015 6 4.48144e+00 2.68313e+00 94 2015 7 3.34475e+00 2.65236e+00 60 2015 8 9.57725e+00 6.96437e+00 89 2015 9 1.61732e+01 4.59112e+00 20 2015 10 4.12109e+00 2.28665e+00 285 2015 11 4.00517e+00 1.24085e+00 182 2015 12 3.44050e+00 1.92966e+00 405 2016 1 4.21227e+00 1.75784e+00 514 2016 2 6.29377e+00 3.63299e+00 687 2016 3 4.91957e+00 2.10244e+00 560 2016 4 3.19696e+00 1.31143e+00 283 2016 5 2.73656e+00 9.77451e-01 106 2016 6 3.30205e+00 9.76666e-01 130 2016 7 3.84192e+00 2.01016e+00 75 2016 8 1.84835e+01 1.06521e+01 85 2016 9 1.68538e+01 7.87716e+00 145 2016 10 8.07446e+00 3.40003e+00 202 2016 11 3.81472e+00 2.45057e+00 547 2016 12 4.19268e+00 1.67249e+00 374 2017 1 3.91536e+00 2.40303e+00 392 2017 2 4.26434e+00 1.92874e+00 561 2017 3 3.39834e+00 1.30426e+00 650 2017 4 3.94795e+00 3.41792e+00 277 2017 5 2.21881e+00 1.70807e+00 145 2017 6 1.94585e+00 1.32653e+00 139 2017 7 3.57949e+00 9.62377e+00 37 2017 8 6.07707e+00 3.05966e+00 120 2017 9 6.60184e+00 3.60277e+00 160 2017 10 4.67366e+00 1.98136e+00 367 2017 11 3.91084e+00 2.08708e+00 502 2017 12 2.92177e+00 1.24750e+00 405 2018 1 3.51052e+00 1.82374e+00 455 2018 2 3.68245e+00 8.60196e-01 329 2018 3 5.19025e+00 2.97129e+00 569 2018 4 4.68499e+00 2.78142e+00 269 2018 5 6.91939e+00 7.19912e+00 210 2018 6 5.29954e+00 1.20193e+00 54 2018 7 4.16397e+00 1.41536e+00 63 2018 8 1.03414e+01 8.23352e+00 105 2018 9 9.84638e+00 8.64925e+00 238 2018 10 5.83699e+00 5.26878e+00 351 2018 11 6.21690e+00 2.90245e+00 142 2018 12 6.07540e+00 2.89966e+00 273 2019 1 1.15381e+01 4.63428e+00 178 2019 2 9.50253e+00 5.36269e+00 46 2019 3 1.15235e+01 7.42415e+00 389 2019 4 5.35162e+00 3.37973e+00 234 2019 5 2.70371e+00 1.21387e+00 62 2019 6 7.95960e+00 1.42229e+00 17 2019 7 4.03036e+00 1.23707e+00 81 2019 8 3.04792e+00 2.60714e+00 47 2019 9 4.61095e+00 1.67788e+00 86 2019 10 4.89550e+00 2.34914e+00 383 2019 11 2.84673e+00 1.69499e+00 384 2019 12 3.55253e+00 2.31211e+00 301 2020 1 3.17990e+00 1.14477e+00 305 2020 2 4.34223e+00 3.30223e+00 240 2020 3 2.99796e+00 9.28579e-01 431 2020 4 2.79112e+00 9.22843e-01 229 2020 5 2.63789e+00 1.25398e+00 305 2020 6 6.74200e+00 2.51455e+00 59 2020 7 7.39974e-01 6.38417e-01 14 2020 8 4.36398e+00 1.63166e+00 53 2020 9 9.82502e+00 3.85818e+00 61 2020 10 9.78228e+00 5.47416e+00 193 2020 11 5.30983e+00 2.07245e+00 318 2020 12 3.84540e+00 1.51639e+00 319 2021 1 6.15711e+00 3.00049e+00 282 2021 2 6.87391e+00 3.76505e+00 398 2021 3 5.57116e+00 2.10954e+00 354 2021 4 6.47114e+00 2.68093e+00 295 2021 5 5.47534e+00 1.73706e+00 374 2021 6 3.28245e+00 7.25408e-01 104 2021 7 4.13720e+00 2.93527e+00 5 2021 8 nan nan 0 2021 9 1.05011e+01 4.84628e+00 161 2021 10 7.08852e+00 4.98624e+00 156 2021 11 6.30472e+00 3.62140e+00 564 2021 12 4.04299e+00 2.57658e+00 391 2022 1 5.64294e+00 2.99889e+00 445 2022 2 3.63749e+00 1.32003e+00 552 2022 3 6.67659e+00 7.39453e+00 428 2022 4 5.18497e+00 1.05628e+00 64 2022 5 5.61460e+00 2.04350e+00 218 2022 6 4.12736e+00 1.68696e+00 101 2022 7 3.05224e+00 1.35654e+00 137 2022 8 5.82773e+00 2.48354e+00 98 2022 9 4.11892e+00 1.20593e+00 164 2022 10 4.84672e+00 2.05092e+00 904 2022 11 6.13895e+00 2.63380e+00 212 2022 12 4.18651e+00 4.27454e+00 673 2023 1 4.04033e+00 2.33502e+00 670 2023 2 4.34235e+00 1.53896e+00 464 2023 3 4.31008e+00 2.25708e+00 626 2023 4 4.21435e+00 2.87750e+00 261 2023 5 4.99223e+00 2.49129e+00 229 2023 6 4.80750e+00 2.33819e+00 125 2023 7 1.16400e+01 4.75467e+00 64 2023 8 6.87992e+00 3.88706e+00 145 2023 9 1.00181e+01 7.47936e+00 182 2023 10 5.82454e+00 2.01900e+00 458 2023 11 5.08110e+00 2.03196e+00 409 2023 12 6.78969e+00 5.13278e+00 205 2024 1 8.48253e+00 4.46717e+00 143 2024 2 9.43019e+00 6.39457e+00 520 2024 3 9.08198e+00 2.54575e+00 314 2024 4 nan nan 0