condition mean min max ZT0-3 155.764862 155.764862 155.764862 ZT4-7 128.90894250000002 128.90894250000002 128.90894250000002 ZT8-11 96.593928 96.593928 96.593928 ZT12-15 116.238019 116.238019 116.238019 ZT16-19 87.93526800000001 87.93526800000001 87.93526800000001 ZT20-23 101.248277 101.248277 101.248277