condition mean min max ZT0-3 8256.25 8256.25 8256.25 ZT4-7 8068.0 8068.0 8068.0 ZT8-11 7328.55 7328.55 7328.55 ZT12-15 7304.299999999999 7304.299999999999 7304.299999999999 ZT16-19 8324.75 8324.75 8324.75 ZT20-23 8561.0 8561.0 8561.0