condition mean min max ZT0-3 10.374025 10.374025 10.374025 ZT4-7 12.936399999999999 12.936399999999999 12.936399999999999 ZT8-11 0.0 0.0 0.0 ZT12-15 5.97455 5.97455 5.97455 ZT16-19 13.46785 13.46785 13.46785 ZT20-23 13.478394999999999 13.478394999999999 13.478394999999999