condition mean min max ZT0-3 159.1 159.1 159.1 ZT4-7 141.9 141.9 141.9 ZT8-11 132.8 132.8 132.8 ZT12-15 97.10000000000001 97.10000000000001 97.10000000000001 ZT16-19 113.95 113.95 113.95 ZT20-23 204.55 204.55 204.55