condition mean min max ZT0-3 1079.85 1079.85 1079.85 ZT4-7 1188.0 1188.0 1188.0 ZT8-11 1159.5 1159.5 1159.5 ZT12-15 1184.35 1184.35 1184.35 ZT16-19 1128.8000000000002 1128.8000000000002 1128.8000000000002 ZT20-23 1351.75 1351.75 1351.75