condition mean min max ZT0-3 1266.5 1266.5 1266.5 ZT4-7 1277.9 1277.9 1277.9 ZT8-11 1204.15 1204.15 1204.15 ZT12-15 1319.25 1319.25 1319.25 ZT16-19 1382.5 1382.5 1382.5 ZT20-23 1216.5 1216.5 1216.5