condition mean min max ZT0-3 1341.7 1341.7 1341.7 ZT4-7 1080.8 1080.8 1080.8 ZT8-11 883.45 883.45 883.45 ZT12-15 1183.35 1183.35 1183.35 ZT16-19 1226.65 1226.65 1226.65 ZT20-23 1210.1 1210.1 1210.1