condition mean min max ZT0-3 965.65 965.65 965.65 ZT4-7 244.0 244.0 244.0 ZT8-11 198.25 198.25 198.25 ZT12-15 146.5 146.5 146.5 ZT16-19 157.35000000000002 157.35000000000002 157.35000000000002 ZT20-23 381.45 381.45 381.45