condition mean min max ZT0-3 2442.55 2442.55 2442.55 ZT4-7 2148.1 2148.1 2148.1 ZT8-11 1990.1 1990.1 1990.1 ZT12-15 1904.95 1904.95 1904.95 ZT16-19 2253.45 2253.45 2253.45 ZT20-23 2331.8999999999996 2331.8999999999996 2331.8999999999996