condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.011532141166666668 0.0 0.023064282333333335 ZT8-11 0.011012642000000001 0.0 0.022025284000000003 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.023555439666666667 0.0 0.047110879333333334