condition mean min max ZT0-3 264.65 264.65 264.65 ZT4-7 296.2 296.2 296.2 ZT8-11 237.65 237.65 237.65 ZT12-15 228.05 228.05 228.05 ZT16-19 263.3 263.3 263.3 ZT20-23 279.65 279.65 279.65