t1: TORSION ATOMS=5,7,9,15
t2: TORSION ATOMS=7,9,15,17
p1: PATHMSD REFERENCE=right_path.dat LAMBDA=15100.
p2: PATHMSD REFERENCE=wrong_path.dat  LAMBDA=8244.4
PRINT ARG=* STRIDE=2 FILE=colvar FMT=%12.8f
