condition mean min max ZT0-3 17.86125 15.495049999999999 20.227449999999997 ZT4-7 12.169550000000001 12.169550000000001 12.169550000000001 ZT8-11 28.5357 28.5357 28.5357 ZT12-15 0 0 0 ZT16-19 34.574400000000004 34.574400000000004 34.574400000000004 ZT20-23 26.281799999999997 26.281799999999997 26.281799999999997