condition mean min max ZT0-3 93.887475 79.39345 108.3815 ZT4-7 30.991549999999997 30.991549999999997 30.991549999999997 ZT8-11 5.432605000000001 5.432605000000001 5.432605000000001 ZT12-15 0 0 0 ZT16-19 31.0053 31.0053 31.0053 ZT20-23 37.16505 37.16505 37.16505