condition mean min max ZT0-3 0.291063 0.291063 0.291063 ZT4-7 0.103718 0.103718 0.103718 ZT8-11 0.2548225 0.2548225 0.2548225 ZT12-15 0.5678045 0.5678045 0.5678045 ZT16-19 0.3183745 0.3183745 0.3183745 ZT20-23 0.40494299999999994 0.40494299999999994 0.40494299999999994