condition mean min max ZT0-3 58.587450000000004 58.587450000000004 58.587450000000004 ZT4-7 70.42065 70.42065 70.42065 ZT8-11 35.414550000000006 35.414550000000006 35.414550000000006 ZT12-15 25.15735 25.15735 25.15735 ZT16-19 35.5071 35.5071 35.5071 ZT20-23 52.34725 52.34725 52.34725