condition mean min max ZT0-3 361.7 361.7 361.7 ZT4-7 426.1 426.1 426.1 ZT8-11 473.45 473.45 473.45 ZT12-15 399.2 399.2 399.2 ZT16-19 382.0 382.0 382.0 ZT20-23 403.95000000000005 403.95000000000005 403.95000000000005