condition mean min max ZT0-3 83.4 83.4 83.4 ZT4-7 106.1 106.1 106.1 ZT8-11 114.95 114.95 114.95 ZT12-15 50.55 50.55 50.55 ZT16-19 105.05000000000001 105.05000000000001 105.05000000000001 ZT20-23 98.65 98.65 98.65