condition mean min max ZT0-3 11.152750000000001 11.152750000000001 11.152750000000001 ZT4-7 5.90982 5.90982 5.90982 ZT8-11 5.52459 5.52459 5.52459 ZT12-15 2.526955 2.526955 2.526955 ZT16-19 9.29099 9.29099 9.29099 ZT20-23 14.4407 14.4407 14.4407