Statistics over 250001 steps [ 0.0000 through 250.0000 ps ], 2 data sets All statistics are over 25001 points Energy Average Err.Est. RMSD Tot-Drift ------------------------------------------------------------------------------- Bond 0.259998 0.00071 0.170566 -0.00415409 (kJ/mol) Kinetic En. 0.376069 0.00061 0.174394 0.000898224 (kJ/mol) You may want to use the -driftcorr flag in order to correct for spurious drift in the graphs. Note that this is not a substitute for proper equilibration and sampling! You should select the temperature in order to obtain fluctuation properties.