condition mean min max ZT0-3 5428.049999999999 5428.049999999999 5428.049999999999 ZT4-7 8019.8 8019.8 8019.8 ZT8-11 6986.85 6986.85 6986.85 ZT12-15 6525.200000000001 6525.200000000001 6525.200000000001 ZT16-19 5313.7 5313.7 5313.7 ZT20-23 5200.9 5200.9 5200.9