condition mean min max ZT0-3 3002.8500000000004 3002.8500000000004 3002.8500000000004 ZT4-7 2770.3 2770.3 2770.3 ZT8-11 2608.55 2608.55 2608.55 ZT12-15 2759.5 2759.5 2759.5 ZT16-19 2928.05 2928.05 2928.05 ZT20-23 2996.5 2996.5 2996.5