condition mean min max ZT0-3 14.22153 14.22153 14.22153 ZT4-7 12.641626500000001 12.641626500000001 12.641626500000001 ZT8-11 11.147023 11.147023 11.147023 ZT12-15 10.294672 10.294672 10.294672 ZT16-19 7.395651 7.395651 7.395651 ZT20-23 8.577247 8.577247 8.577247