condition mean min max ZT0-3 260.2745 260.2745 260.2745 ZT4-7 252.27800000000002 252.27800000000002 252.27800000000002 ZT8-11 209.5045 209.5045 209.5045 ZT12-15 175.115 175.115 175.115 ZT16-19 278.3965 278.3965 278.3965 ZT20-23 242.87 242.87 242.87