condition mean min max ZT0-3 5.079582500000001 4.15228 6.0068850000000005 ZT4-7 4.457174999999999 4.457174999999999 4.457174999999999 ZT8-11 10.43168 10.43168 10.43168 ZT12-15 0 0 0 ZT16-19 10.852615 10.852615 10.852615 ZT20-23 9.110655000000001 9.110655000000001 9.110655000000001