condition mean min max ZT0-3 64.26383 64.26383 64.26383 ZT4-7 53.2779235 53.2779235 53.2779235 ZT8-11 58.7000375 58.7000375 58.7000375 ZT12-15 83.0323515 83.0323515 83.0323515 ZT16-19 89.4948965 89.4948965 89.4948965 ZT20-23 68.85795300000001 68.85795300000001 68.85795300000001