condition mean min max ZT0-3 0.8531865000000001 0.8531865000000001 0.8531865000000001 ZT4-7 0.479061 0.479061 0.479061 ZT8-11 0.759702 0.759702 0.759702 ZT12-15 1.0356100000000001 1.0356100000000001 1.0356100000000001 ZT16-19 1.3107 1.3107 1.3107 ZT20-23 1.0502765 1.0502765 1.0502765