condition mean min max ZT0-3 7.2538175 6.429955 8.07768 ZT4-7 7.359540000000001 7.359540000000001 7.359540000000001 ZT8-11 5.826029999999999 5.826029999999999 5.826029999999999 ZT12-15 0 0 0 ZT16-19 6.52407 6.52407 6.52407 ZT20-23 5.6449750000000005 5.6449750000000005 5.6449750000000005