condition mean min max ZT0-3 3912.45 3912.45 3912.45 ZT4-7 3433.6 3433.6 3433.6 ZT8-11 3442.75 3442.75 3442.75 ZT12-15 2777.55 2777.55 2777.55 ZT16-19 2128.6 2128.6 2128.6 ZT20-23 2582.8999999999996 2582.8999999999996 2582.8999999999996