condition mean min max ZT0-3 3624.6 3624.6 3624.6 ZT4-7 4474.7 4474.7 4474.7 ZT8-11 4068.5 4068.5 4068.5 ZT12-15 3264.9 3264.9 3264.9 ZT16-19 2765.7 2765.7 2765.7 ZT20-23 3006.9 3006.9 3006.9