condition mean min max ZT0-3 65.06505 65.06505 65.06505 ZT4-7 25.571800000000003 25.571800000000003 25.571800000000003 ZT8-11 25.47045 25.47045 25.47045 ZT12-15 109.3955 109.3955 109.3955 ZT16-19 120.111 120.111 120.111 ZT20-23 107.3435 107.3435 107.3435