condition mean min max ZT0-3 0.13169075 0.1060115 0.15737 ZT4-7 0.26607400000000003 0.26607400000000003 0.26607400000000003 ZT8-11 0.2662775 0.2662775 0.2662775 ZT12-15 0 0 0 ZT16-19 0.312616 0.312616 0.312616 ZT20-23 0.3669745 0.3669745 0.3669745