condition mean min max ZT0-3 158.0 158.0 158.0 ZT4-7 83.6 83.6 83.6 ZT8-11 91.30000000000001 91.30000000000001 91.30000000000001 ZT12-15 132.15 132.15 132.15 ZT16-19 152.1 152.1 152.1 ZT20-23 148.60000000000002 148.60000000000002 148.60000000000002