condition mean min max ZT0-3 0.9643600000000001 0.9643600000000001 0.9643600000000001 ZT4-7 1.0929955 1.0929955 1.0929955 ZT8-11 1.3464195 1.3464195 1.3464195 ZT12-15 0.852562 0.852562 0.852562 ZT16-19 0.607552 0.607552 0.607552 ZT20-23 1.0884003333333332 1.0884003333333332 1.0884003333333332