condition mean min max ZT0-3 1.035792 0.7161690000000001 1.355415 ZT4-7 1.4610400000000001 1.4610400000000001 1.4610400000000001 ZT8-11 1.3114599999999998 1.3114599999999998 1.3114599999999998 ZT12-15 0 0 0 ZT16-19 0.9993205000000001 0.9993205000000001 0.9993205000000001 ZT20-23 1.0044365 1.0044365 1.0044365