condition mean min max ZT0-3 53.349999999999994 53.349999999999994 53.349999999999994 ZT4-7 44.8 44.8 44.8 ZT8-11 61.45 61.45 61.45 ZT12-15 65.05000000000001 65.05000000000001 65.05000000000001 ZT16-19 30.1 30.1 30.1 ZT20-23 39.2 39.2 39.2