condition mean min max ZT0-3 0.034755916666666664 0.0112079 0.0698276 ZT4-7 0.0337026 0.0337026 0.0337026 ZT8-11 0.01155425 0.01155425 0.01155425 ZT12-15 0.055060975 0.03656445 0.0735575 ZT16-19 0.07730580000000001 0.07730580000000001 0.07730580000000001 ZT20-23 0.050336 0.050336 0.050336