condition mean min max ZT0-3 56.59845 56.59845 56.59845 ZT4-7 51.92195 51.92195 51.92195 ZT8-11 40.62065 40.62065 40.62065 ZT12-15 49.04985 49.04985 49.04985 ZT16-19 61.581149999999994 61.581149999999994 61.581149999999994 ZT20-23 56.55215 56.55215 56.55215