condition mean min max ZT0-3 1253.5 1253.5 1253.5 ZT4-7 926.7 926.7 926.7 ZT8-11 2619.15 2619.15 2619.15 ZT12-15 2033.2 2033.2 2033.2 ZT16-19 1226.15 1226.15 1226.15 ZT20-23 1862.6999999999998 1862.6999999999998 1862.6999999999998