condition mean min max ZT0-3 436.95000000000005 436.95000000000005 436.95000000000005 ZT4-7 436.2 436.2 436.2 ZT8-11 453.9 453.9 453.9 ZT12-15 478.25 478.25 478.25 ZT16-19 423.75 423.75 423.75 ZT20-23 480.55 480.55 480.55