condition mean min max ZT0-3 1055.85 1055.85 1055.85 ZT4-7 1131.4 1131.4 1131.4 ZT8-11 1021.0 1021.0 1021.0 ZT12-15 1232.4 1232.4 1232.4 ZT16-19 1098.85 1098.85 1098.85 ZT20-23 1025.25 1025.25 1025.25