condition mean min max ZT0-3 4985.1 4985.1 4985.1 ZT4-7 2724.0 2724.0 2724.0 ZT8-11 3452.3 3452.3 3452.3 ZT12-15 3618.8 3618.8 3618.8 ZT16-19 4621.2 4621.2 4621.2 ZT20-23 4690.6 4690.6 4690.6