> r_power
       r trtdf errdf   f_0.05    lambda     power
 [1,]  2     2     3 9.552094  3.454545 0.1664259
 [2,]  3     2     6 5.143253  5.181818 0.3354484
 [3,]  4     2     9 4.256495  6.909091 0.4970056
 [4,]  5     2    12 3.885294  8.636364 0.6338798
 [5,]  6     2    15 3.682320 10.363636 0.7418642
 [6,]  7     2    18 3.554557 12.090909 0.8228101
 [7,]  8     2    21 3.466800 13.818182 0.8811346
 [8,]  9     2    24 3.402826 15.545455 0.9218380
 [9,] 10     2    27 3.354131 17.272727 0.9494992
[10,] 11     2    30 3.315830 19.000000 0.9678773
[11,] 12     2    33 3.284918 20.727273 0.9798517
[12,] 13     2    36 3.259446 22.454545 0.9875214
[13,] 14     2    39 3.238096 24.181818 0.9923599
[14,] 15     2    42 3.219942 25.909091 0.9953712
[15,] 16     2    45 3.204317 27.636364 0.9972226
[16,] 17     2    48 3.190727 29.363636 0.9983483
[17,] 18     2    51 3.178799 31.090909 0.9990258
[18,] 19     2    54 3.168246 32.818182 0.9994298
[19,] 20     2    57 3.158843 34.545455 0.9996687
[20,] 21     2    60 3.150411 36.272727 0.9998088
[21,] 22     2    63 3.142809 38.000000 0.9998903
[22,] 23     2    66 3.135918 39.727273 0.9999375
[23,] 24     2    69 3.129644 41.454545 0.9999645
[24,] 25     2    72 3.123907 43.181818 0.9999800
[25,] 26     2    75 3.118642 44.909091 0.9999888
[26,] 27     2    78 3.113792 46.636364 0.9999937
[27,] 28     2    81 3.109311 48.363636 0.9999965
[28,] 29     2    84 3.105157 50.090909 0.9999981
[29,] 30     2    87 3.101296 51.818182 0.9999989