condition mean min max ZT0-3 25.98335 25.477 26.4897 ZT4-7 24.159550000000003 24.159550000000003 24.159550000000003 ZT8-11 26.65085 26.65085 26.65085 ZT12-15 0 0 0 ZT16-19 28.7691 28.7691 28.7691 ZT20-23 25.763350000000003 25.763350000000003 25.763350000000003