condition mean min max ZT0-3 3393.1000000000004 3393.1000000000004 3393.1000000000004 ZT4-7 6446.2 6446.2 6446.2 ZT8-11 6130.7 6130.7 6130.7 ZT12-15 5266.6 5266.6 5266.6 ZT16-19 3457.5 3457.5 3457.5 ZT20-23 3074.3 3074.3 3074.3