condition mean min max ZT0-3 739.95 739.95 739.95 ZT4-7 561.0 561.0 561.0 ZT8-11 951.4 951.4 951.4 ZT12-15 744.9000000000001 744.9000000000001 744.9000000000001 ZT16-19 583.05 583.05 583.05 ZT20-23 623.45 623.45 623.45