condition mean min max ZT0-3 2.9050599999999998 2.8230399999999998 2.9870799999999997 ZT4-7 4.561030000000001 4.561030000000001 4.561030000000001 ZT8-11 11.00968 11.00968 11.00968 ZT12-15 0 0 0 ZT16-19 8.222465 8.222465 8.222465 ZT20-23 5.99463 5.99463 5.99463