condition mean min max ZT0-3 4765.620000000001 4765.620000000001 4765.620000000001 ZT4-7 2561.52 2561.52 2561.52 ZT8-11 2355.0699999999997 2355.0699999999997 2355.0699999999997 ZT12-15 6010.25 6010.25 6010.25 ZT16-19 8204.16 8204.16 8204.16 ZT20-23 6528.675 6528.675 6528.675