condition mean min max ZT0-3 3849.85 3849.85 3849.85 ZT4-7 2958.9 2958.9 2958.9 ZT8-11 2636.05 2636.05 2636.05 ZT12-15 2408.8999999999996 2408.8999999999996 2408.8999999999996 ZT16-19 3176.25 3176.25 3176.25 ZT20-23 3827.3 3827.3 3827.3