condition mean min max ZT0-3 778.7 778.7 778.7 ZT4-7 805.8 805.8 805.8 ZT8-11 799.55 799.55 799.55 ZT12-15 776.8499999999999 776.8499999999999 776.8499999999999 ZT16-19 732.1 732.1 732.1 ZT20-23 841.95 841.95 841.95