condition mean min max ZT0-3 389.15 389.15 389.15 ZT4-7 591.1 591.1 591.1 ZT8-11 593.8 593.8 593.8 ZT12-15 727.5 727.5 727.5 ZT16-19 699.3499999999999 699.3499999999999 699.3499999999999 ZT20-23 489.75 489.75 489.75