condition mean min max ZT0-3 1018.55 1018.55 1018.55 ZT4-7 1090.7 1090.7 1090.7 ZT8-11 1276.85 1276.85 1276.85 ZT12-15 1191.65 1191.65 1191.65 ZT16-19 1201.0500000000002 1201.0500000000002 1201.0500000000002 ZT20-23 1306.25 1306.25 1306.25