condition mean min max ZT0-3 0.85389 0.7826124999999999 0.9251675 ZT4-7 0.35444 0.35444 0.35444 ZT8-11 0.5966994999999999 0.5966994999999999 0.5966994999999999 ZT12-15 0 0 0 ZT16-19 0.60624 0.60624 0.60624 ZT20-23 0.47904899999999995 0.47904899999999995 0.47904899999999995