the way to look at the numbers on the lampblack detector is that the bigger the number, the thicker the lampblack is. The bigger the number in the lampblack detector, the thicker the lampblack is. The oil fume concentration was detected by an oil fume detector, and the oil fume at the side of the pan was relatively large. We measured the oil fume index above the frying pan to be 1.66mg/ m3, which was relatively thick.