condition mean min max ZT0-3 43.399263 43.399263 43.399263 ZT4-7 29.169767500000003 29.169767500000003 29.169767500000003 ZT8-11 38.0210085 38.0210085 38.0210085 ZT12-15 43.376282 43.376282 43.376282 ZT16-19 35.2398455 35.2398455 35.2398455 ZT20-23 29.332087 29.332087 29.332087