0: user time 1: system time 2: maxrss 3: idrss 4: isrss 5: minflt 6: minor pagefaults 7: major pagefaults 8: swaps 9: block input op. 10: block output op. 11: messages sent 12: messages received 13: signals received 14: voluntary context switches 15: involuntary context switches 16: sysc 17: ioch 18: rtime 19: ttime 20: tftime 21: dftime 22: kftime 23: ltime 24: slptime 25: wtime 26: stoptime 27: brksize 28: stksize
Don't ask me to explain these values, read your system manuals for more information. (Note that all values may not be present though)