condition mean min max ZT0-3 0.5689044999999999 0.5689044999999999 0.5689044999999999 ZT4-7 0.3255175 0.3255175 0.3255175 ZT8-11 0.296846 0.296846 0.296846 ZT12-15 0.874807 0.874807 0.874807 ZT16-19 1.96278 1.96278 1.96278 ZT20-23 1.1074000000000002 1.1074000000000002 1.1074000000000002