condition mean min max ZT0-3 1.1144020000000001 1.032199 1.196605 ZT4-7 1.1717805000000001 1.1717805000000001 1.1717805000000001 ZT8-11 1.25801 1.25801 1.25801 ZT12-15 0 0 0 ZT16-19 1.03417 1.03417 1.03417 ZT20-23 1.30098 1.30098 1.30098