condition mean min max ZT0-3 0.035719775 0.0242141 0.04722545 ZT4-7 0.07308809999999999 0.07308809999999999 0.07308809999999999 ZT8-11 0.12233195000000001 0.12233195000000001 0.12233195000000001 ZT12-15 0 0 0 ZT16-19 0.04766555 0.04766555 0.04766555 ZT20-23 0.09562285000000001 0.09562285000000001 0.09562285000000001