condition mean min max ZT0-3 253.75 253.75 253.75 ZT4-7 234.1 234.1 234.1 ZT8-11 243.8 243.8 243.8 ZT12-15 205.5 205.5 205.5 ZT16-19 202.1 202.1 202.1 ZT20-23 226.60000000000002 226.60000000000002 226.60000000000002