condition mean min max ZT0-3 2903.6 2903.6 2903.6 ZT4-7 7286.0 7286.0 7286.0 ZT8-11 6812.15 6812.15 6812.15 ZT12-15 5181.3 5181.3 5181.3 ZT16-19 2912.55 2912.55 2912.55 ZT20-23 2706.05 2706.05 2706.05