condition mean min max ZT0-3 3044.1000000000004 3044.1000000000004 3044.1000000000004 ZT4-7 3289.9 3289.9 3289.9 ZT8-11 3569.95 3569.95 3569.95 ZT12-15 3609.35 3609.35 3609.35 ZT16-19 3442.1000000000004 3442.1000000000004 3442.1000000000004 ZT20-23 3596.1000000000004 3596.1000000000004 3596.1000000000004