condition mean min max ZT0-3 37.711057 37.711057 37.711057 ZT4-7 187.865181 187.865181 187.865181 ZT8-11 194.068038 194.068038 194.068038 ZT12-15 146.0143965 146.0143965 146.0143965 ZT16-19 92.069257 92.069257 92.069257 ZT20-23 104.13763800000001 104.13763800000001 104.13763800000001