condition mean min max ZT0-3 1181.75 1181.75 1181.75 ZT4-7 996.3 996.3 996.3 ZT8-11 1055.6 1055.6 1055.6 ZT12-15 1234.4 1234.4 1234.4 ZT16-19 1190.65 1190.65 1190.65 ZT20-23 1238.35 1238.35 1238.35