condition mean min max ZT0-3 2200.0 2200.0 2200.0 ZT4-7 2980.9 2980.9 2980.9 ZT8-11 2834.8999999999996 2834.8999999999996 2834.8999999999996 ZT12-15 2904.7 2904.7 2904.7 ZT16-19 2568.4 2568.4 2568.4 ZT20-23 2266.65 2266.65 2266.65