monotone decreasing per-S from 0.183280141973295 to 18.266920816671743 : True first 0.13285685852894766 max idx 0 0.183280141973295
move 10% S to 2 kTc: 5.165079255701843
move 10% S to 13 kTc: -5.502523867472053
1 357
1.5 313
2 316
2.5 329
3 345
4 379
5 412