condition mean min max ZT0-3 0.5535779999999999 0.42914949999999996 0.6780065 ZT4-7 1.5481500000000001 1.5481500000000001 1.5481500000000001 ZT8-11 1.4700350000000002 1.4700350000000002 1.4700350000000002 ZT12-15 0 0 0 ZT16-19 1.01319 1.01319 1.01319 ZT20-23 0.8492915 0.8492915 0.8492915