condition mean min max ZT0-3 334.3 334.3 334.3 ZT4-7 122.9 122.9 122.9 ZT8-11 94.3 94.3 94.3 ZT12-15 132.35000000000002 132.35000000000002 132.35000000000002 ZT16-19 348.9 348.9 348.9 ZT20-23 442.3 442.3 442.3