condition mean min max ZT0-3 0.016109633333333335 0.0 0.0483289 ZT4-7 0.092006 0.092006 0.092006 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0