condition mean min max ZT0-3 5572.450000000001 5572.450000000001 5572.450000000001 ZT4-7 3586.2 3586.2 3586.2 ZT8-11 3600.3 3600.3 3600.3 ZT12-15 4402.15 4402.15 4402.15 ZT16-19 4464.299999999999 4464.299999999999 4464.299999999999 ZT20-23 4929.3 4929.3 4929.3