condition mean min max ZT0-3 4.7167575 4.23823 5.195285 ZT4-7 4.49409 4.49409 4.49409 ZT8-11 4.290645 4.290645 4.290645 ZT12-15 0 0 0 ZT16-19 5.77407 5.77407 5.77407 ZT20-23 5.43225 5.43225 5.43225