This is only a partial answer, sheding light on the three values the command returns; quoted from the time(1) manpage: "(i) the elapsed real time between invocation and termination, (ii) the user CPU time (the sum of the tms_utime and tms_cutime values in a struct tms as returned by times(2)), and (iii) the system CPU time (the sum of the tms_stime and tms_cstime values in a struct tms as returned by times(2))."time(1) manpage:
(i) the elapsed real time between invocation and termination, (ii) the user CPU time (the sum of the
tms_utimeandtms_cutimevalues in astruct tmsas returned bytimes(2)), and (iii) the system CPU time (the sum of thetms_stimeandtms_cstimevalues in astruct tmsas returned bytimes(2))."