condition mean min max ZT0-3 123.462826 123.462826 123.462826 ZT4-7 118.97443700000001 118.97443700000001 118.97443700000001 ZT8-11 87.92016849999999 87.92016849999999 87.92016849999999 ZT12-15 106.488986 106.488986 106.488986 ZT16-19 116.800212 116.800212 116.800212 ZT20-23 75.552412 75.552412 75.552412