condition mean min max ZT0-3 2744.2 2744.2 2744.2 ZT4-7 2975.8 2975.8 2975.8 ZT8-11 2669.05 2669.05 2669.05 ZT12-15 2834.2 2834.2 2834.2 ZT16-19 3079.55 3079.55 3079.55 ZT20-23 2939.3999999999996 2939.3999999999996 2939.3999999999996