condition mean min max ZT0-3 407.7 407.7 407.7 ZT4-7 319.9 319.9 319.9 ZT8-11 278.8 278.8 278.8 ZT12-15 391.2 391.2 391.2 ZT16-19 409.4 409.4 409.4 ZT20-23 412.6 412.6 412.6