condition mean min max ZT0-3 6489.700000000001 6489.700000000001 6489.700000000001 ZT4-7 8035.1 8035.1 8035.1 ZT8-11 7568.35 7568.35 7568.35 ZT12-15 7959.8 7959.8 7959.8 ZT16-19 7160.85 7160.85 7160.85 ZT20-23 6672.5 6672.5 6672.5