condition mean min max ZT0-3 15.8956 14.704699999999999 17.0865 ZT4-7 10.153265000000001 10.153265000000001 10.153265000000001 ZT8-11 9.193200000000001 9.193200000000001 9.193200000000001 ZT12-15 0 0 0 ZT16-19 12.72705 12.72705 12.72705 ZT20-23 14.9073 14.9073 14.9073