condition mean min max ZT0-3 22.5092 22.5092 22.5092 ZT4-7 11.45454 11.45454 11.45454 ZT8-11 15.842400000000001 15.842400000000001 15.842400000000001 ZT12-15 16.96985 16.96985 16.96985 ZT16-19 43.01965 43.01965 43.01965 ZT20-23 35.567099999999996 35.567099999999996 35.567099999999996