condition mean min max ZT0-3 1218.1 1218.1 1218.1 ZT4-7 1058.0 1058.0 1058.0 ZT8-11 1200.85 1200.85 1200.85 ZT12-15 1174.85 1174.85 1174.85 ZT16-19 831.5 831.5 831.5 ZT20-23 891.2 891.2 891.2