condition mean min max ZT0-3 5359.95 5359.95 5359.95 ZT4-7 6687.7 6687.7 6687.7 ZT8-11 5436.15 5436.15 5436.15 ZT12-15 4247.450000000001 4247.450000000001 4247.450000000001 ZT16-19 3961.65 3961.65 3961.65 ZT20-23 4381.95 4381.95 4381.95