condition mean min max ZT0-3 233.0805 233.0805 233.0805 ZT4-7 223.40699999999998 223.40699999999998 223.40699999999998 ZT8-11 206.642 206.642 206.642 ZT12-15 199.074 199.074 199.074 ZT16-19 228.9265 228.9265 228.9265 ZT20-23 212.651 212.651 212.651