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 1.94982e-02 1.17540e-03 64
2002  8 nan nan 0
2002  9 1.39000e-02 1.83319e-03 64
2002 10 2.71561e-02 1.45145e-02 396
2002 11 2.76857e-02 4.44527e-02 638
2002 12 1.94878e-02 1.09382e-02 539
2003  1 1.27782e-02 3.60239e-03 405
2003  2 1.35669e-02 4.24119e-03 204
2003  3 9.51910e-03 2.86683e-03 323
2003  4 nan nan 0
2003  5 7.91320e-03 1.08272e-04 5
2003  6 nan nan 0
2003  7 nan nan 0
2003  8 1.29548e-02 6.70430e-04 64
2003  9 2.31171e-02 1.28031e-02 286
2003 10 1.09848e-02 4.70386e-02 283
2003 11 1.51026e-02 4.23146e-02 400
2003 12 2.11698e-02 1.34589e-02 493
2004  1 1.91196e-02 1.49555e-02 397
2004  2 1.27908e-02 5.97652e-03 487
2004  3 4.66044e-03 1.61128e-02 398
2004  4 1.74180e-02 1.30822e-02 274
2004  5 8.45491e-03 6.47870e-04 25
2004  6 nan nan 0
2004  7 nan nan 0
2004  8 3.23333e-02 7.21028e-03 46
2004  9 3.10714e-02 5.74312e-03 148
2004 10 4.16094e-03 3.91105e-02 185
2004 11 -7.90835e-03 3.29933e-02 255
2004 12 2.83746e-02 3.57417e-02 553
2005  1 -1.29952e-02 3.09867e-02 150
2005  2 6.70652e-03 3.80178e-02 562
2005  3 8.72434e-03 8.41205e-03 287
2005  4 3.72486e-03 2.04760e-02 283
2005  5 1.44012e-02 6.96267e-03 154
2005  6 nan nan 0
2005  7 nan nan 0
2005  8 2.15189e-02 2.43697e-03 66
2005  9 5.77876e-02 2.67146e-02 68
2005 10 2.02734e-02 7.93144e-02 128
2005 11 8.93775e-03 2.37854e-02 450
2005 12 8.22113e-03 2.37856e-02 705
2006  1 1.31662e-02 3.21690e-03 215
2006  2 1.16485e-02 1.08047e-02 446
2006  3 9.28169e-03 1.81344e-02 391
2006  4 -4.29079e-02 8.72658e-02 142
2006  5 1.48412e-02 1.07545e-02 158
2006  6 nan nan 0
2006  7 2.03996e-02 1.43852e-02 192
2006  8 1.53906e-02 7.08576e-04 64
2006  9 2.85278e-02 9.66348e-03 149
2006 10 1.83544e-02 7.04411e-03 154
2006 11 1.39291e-02 1.36047e-02 415
2006 12 5.10322e-03 6.39736e-02 376
2007  1 8.16667e-03 1.91817e-02 384
2007  2 1.56439e-02 1.07667e-02 268
2007  3 2.04925e-02 5.21162e-03 62
2007  4 7.87917e-03 5.74068e-04 64
2007  5 nan nan 0
2007  6 nan nan 0
2007  7 1.09275e-02 8.37701e-04 64
2007  8 1.48597e-02 2.74629e-03 64
2007  9 2.33293e-02 3.94042e-03 129
2007 10 1.28706e-02 3.04111e-02 159
2007 11 1.20993e-03 4.02627e-02 176
2007 12 3.10896e-03 3.37415e-02 732
2008  1 4.43470e-03 2.82605e-02 724
2008  2 2.48082e-03 1.91364e-02 442
2008  3 6.81448e-04 1.88263e-02 228
2008  4 8.84431e-03 9.11769e-04 140
2008  5 7.66525e-03 1.39654e-04 64
2008  6 1.36179e-02 1.47540e-03 64
2008  7 1.54890e-02 2.48623e-03 75
2008  8 4.73870e-03 6.19117e-02 128
2008  9 1.94474e-02 1.90686e-03 78
2008 10 2.79428e-03 6.95040e-02 294
2008 11 1.20215e-02 2.07062e-02 482
2008 12 6.34819e-03 2.45191e-02 548
2009  1 -7.94289e-03 2.44728e-02 540
2009  2 -1.26186e-02 2.08413e-02 264
2009  3 6.75703e-03 1.66583e-02 177
2009  4 1.62698e-02 4.98335e-03 149
2009  5 1.13364e-02 1.19089e-03 74
2009  6 nan nan 0
2009  7 -1.40874e-03 5.07859e-02 215
2009  8 1.14268e-02 1.92385e-03 175
2009  9 1.48277e-02 2.77371e-02 88
2009 10 -3.55423e-02 7.06942e-02 312
2009 11 -1.26431e-02 9.99882e-02 387
2009 12 1.70875e-02 6.65348e-03 428
2010  1 1.56050e-02 5.21025e-03 392
2010  2 -1.21100e-02 5.08002e-02 351
2010  3 1.00748e-02 6.38666e-04 79
2010  4 8.54597e-03 1.90139e-05 3
2010  5 2.66830e-02 5.59156e-03 64
2010  6 2.14804e-02 4.80935e-03 64
2010  7 nan nan 0
2010  8 -8.05629e-02 6.38123e-03 30
2010  9 8.08268e-03 5.45698e-02 64
2010 10 -6.49452e-02 1.26602e-01 236
2010 11 -6.30204e-03 5.22098e-02 384
2010 12 3.19703e-03 3.46618e-02 554
2011  1 1.72481e-02 8.72073e-03 549
2011  2 -1.70163e-02 2.98623e-02 209
2011  3 2.79020e-03 2.22480e-02 353
2011  4 1.77380e-03 1.90010e-02 344
2011  5 1.53320e-02 8.09051e-03 130
2011  6 1.60545e-02 3.43742e-03 13
2011  7 nan nan 0
2011  8 nan nan 0
2011  9 1.33384e-02 3.30154e-02 245
2011 10 1.22519e-02 2.01368e-02 329
2011 11 2.53195e-02 1.28055e-02 307
2011 12 1.20089e-02 5.37089e-03 517
2012  1 7.71877e-04 2.68586e-02 552
2012  2 5.81381e-03 3.22567e-02 482
2012  3 -1.02386e-02 2.11671e-02 420
2012  4 1.63829e-02 1.50863e-02 89
2012  5 1.06009e-02 6.03899e-03 141
2012  6 nan nan 0
2012  7 nan nan 0
2012  8 nan nan 0
2012  9 -1.55800e-02 3.49776e-02 238
2012 10 3.80266e-02 1.92658e-02 155
2012 11 2.43944e-02 1.26394e-02 214
2012 12 1.44279e-02 3.00920e-03 426
2013  1 1.85409e-02 6.85264e-03 294
2013  2 -3.69205e-03 2.96814e-02 291
2013  3 -7.28635e-03 3.96326e-02 127
2013  4 1.72027e-02 1.08619e-02 125
2013  5 2.11084e-02 4.24764e-02 192
2013  6 nan nan 0
2013  7 2.02205e-02 5.13655e-03 124
2013  8 -3.41833e-02 0.00000e+00 1
2013  9 1.49851e-02 8.39066e-02 143
2013 10 1.87279e-02 2.06222e-02 196
2013 11 -3.34851e-02 1.18274e-01 505
2013 12 1.49022e-02 2.15880e-02 493
2014  1 3.85488e-03 3.03074e-02 479
2014  2 8.39183e-03 1.76156e-02 337
2014  3 -1.36499e-03 2.84443e-02 232
2014  4 2.54989e-03 1.42798e-02 186
2014  5 1.43794e-02 2.00497e-03 27
2014  6 nan nan 0
2014  7 nan nan 0
2014  8 1.30922e-02 2.39042e-04 16
2014  9 1.76739e-02 4.49318e-03 139
2014 10 1.20416e-02 1.70332e-02 292
2014 11 -1.29620e-02 5.55535e-02 341
2014 12 2.30532e-02 3.08591e-02 559
2015  1 4.28347e-03 2.20203e-02 585
2015  2 2.97394e-02 3.23470e-02 358
2015  3 1.62055e-02 4.46231e-03 323
2015  4 -2.82157e-03 1.89148e-02 41
2015  5 9.14904e-03 1.79518e-02 26
2015  6 nan nan 0
2015  7 nan nan 0
2015  8 -1.60117e-01 2.75452e-02 49
2015  9 2.24590e-02 7.22995e-03 327
2015 10 4.15905e-02 2.60003e-02 280
2015 11 8.63979e-03 2.48021e-02 257
2015 12 8.96675e-03 3.67859e-02 468
2016  1 -4.51606e-03 5.40060e-02 415
2016  2 1.09366e-02 2.17107e-02 388
2016  3 1.12499e-02 8.04791e-04 65
2016  4 -8.95958e-04 4.16166e-02 243
2016  5 2.05701e-02 9.23717e-04 64
2016  6 1.04450e-02 1.64262e-03 44
2016  7 nan nan 0
2016  8 2.37692e-02 2.50034e-03 64
2016  9 nan nan 0
2016 10 1.77948e-02 3.14212e-02 371
2016 11 4.86823e-02 5.11160e-02 218
2016 12 -7.58918e-03 3.92963e-02 488
2017  1 -1.85557e-03 3.25994e-02 493
2017  2 1.32276e-02 1.19542e-02 493
2017  3 5.64671e-03 3.64932e-02 412
2017  4 2.51726e-03 1.54582e-02 168
2017  5 1.97982e-02 7.16231e-03 128
2017  6 1.24937e-02 1.38714e-03 64
2017  7 1.64064e-02 2.39286e-04 8
2017  8 -9.72402e-02 6.19126e-03 64
2017  9 -4.64585e-02 7.73199e-02 128
2017 10 -1.28900e-02 3.86063e-02 66
2017 11 -3.41819e-02 7.00691e-02 294
2017 12 -1.70227e-03 3.09393e-02 592
2018  1 1.35449e-02 1.26052e-02 459
2018  2 6.65185e-03 1.63841e-02 188
2018  3 -2.53121e-02 5.91013e-02 303
2018  4 1.14797e-02 6.11916e-04 62
2018  5 1.01917e-02 8.19717e-05 8
2018  6 nan nan 0
2018  7 2.07409e-02 2.41144e-03 64
2018  8 1.69539e-02 5.28948e-04 52
2018  9 4.58126e-02 1.67256e-02 252
2018 10 -1.05099e-02 3.34388e-02 348
2018 11 -6.38025e-02 2.51847e-02 315
2018 12 2.11306e-03 2.78377e-02 537
2019  1 -1.45271e-02 3.10482e-02 553
2019  2 -1.88071e-03 1.83333e-02 211
2019  3 -5.24891e-03 1.98055e-02 232
2019  4 1.16947e-02 4.65042e-03 128
2019  5 8.07217e-03 1.03558e-04 5
2019  6 2.79703e-02 2.99376e-02 58
2019  7 1.22369e-02 9.35873e-04 64
2019  8 2.38370e-02 2.71912e-04 7
2019  9 4.84223e-02 3.54092e-02 209
2019 10 -2.98791e-02 6.69214e-02 379
2019 11 1.45593e-02 3.66812e-02 578
2019 12 2.44084e-03 3.02065e-02 486
2020  1 6.81890e-03 1.80203e-02 430
2020  2 4.61323e-03 1.91363e-02 500
2020  3 -1.25005e-03 1.67279e-02 229
2020  4 6.15574e-03 9.37935e-03 137
2020  5 2.24172e-02 5.94833e-03 64
2020  6 4.80219e-03 4.60364e-04 64
2020  7 9.68338e-03 4.22088e-04 64
2020  8 2.88451e-02 5.40274e-03 64
2020  9 -2.28907e-02 5.29323e-02 233
2020 10 -1.39279e-02 5.48676e-02 128
2020 11 -6.56764e-03 4.55662e-02 432
2020 12 1.10368e-02 1.58051e-02 607
2021  1 8.58976e-03 1.58337e-02 610
2021  2 1.23347e-02 5.62601e-03 486
2021  3 6.20129e-03 1.53889e-02 400
2021  4 1.05943e-02 3.08070e-04 64
2021  5 1.66099e-02 5.70471e-02 16
2021  6 nan nan 0
2021  7 -1.60491e-02 5.11354e-02 105
2021  8 5.16409e-02 5.75727e-03 64
2021  9 -5.09574e-04 3.42154e-02 108
2021 10 2.56288e-02 1.67224e-02 309
2021 11 -1.16006e-02 4.03732e-02 642
2021 12 1.72031e-02 7.56912e-03 421
2022  1 1.30673e-02 4.58207e-03 500
2022  2 1.07606e-02 2.24627e-03 294
2022  3 1.02847e-02 1.29623e-03 254
2022  4 8.30196e-03 9.15579e-04 53
2022  5 5.41608e-03 4.23976e-04 25
2022  6 8.40319e-03 3.12223e-04 64
2022  7 5.09126e-03 1.42165e-04 34
2022  8 5.92157e-02 7.85846e-03 64
2022  9 2.90624e-02 1.00297e-02 199
2022 10 2.37319e-02 1.13947e-02 113
2022 11 3.29583e-02 2.48563e-02 720
2022 12 1.77104e-02 5.80222e-03 689
2023  1 1.20251e-02 4.05249e-03 562
2023  2 9.00608e-03 1.71531e-03 266
2023  3 9.08720e-03 9.35484e-03 614
2023  4 5.16006e-03 4.80308e-04 210
2023  5 5.69453e-03 3.68379e-04 216
2023  6 1.60406e-02 7.35957e-03 79
2023  7 nan nan 0
2023  8 4.40400e-02 8.11018e-03 5
2023  9 2.41331e-02 4.90047e-03 194
2023 10 1.07596e-02 3.26643e-03 146
2023 11 1.30571e-02 3.52539e-03 254
2023 12 1.85066e-02 1.55656e-02 677
2024  1 1.46639e-02 1.05245e-02 476
2024  2 1.38177e-02 9.10412e-03 618
2024  3 9.76858e-03 3.42611e-03 216
2024  4 7.17503e-03 1.78519e-04 4