condition mean min max ZT0-3 43.213716 43.213716 43.213716 ZT4-7 155.2030125 155.2030125 155.2030125 ZT8-11 282.1999065 282.1999065 282.1999065 ZT12-15 134.5634345 134.5634345 134.5634345 ZT16-19 106.73166850000001 106.73166850000001 106.73166850000001 ZT20-23 60.024977500000006 60.024977500000006 60.024977500000006