Figure 4.

PC scatterplot of 15 vials from lot 2515203. The pattern in these PCs also suggests that there may be at least two groups in the data. In PCs 4 to 6, vials 5, 6, and 9 appear to be forming a second group.

PC scatterplot of 15 vials from lot 2515203. The pattern in these PCs also suggests that there may be at least two groups in the data. In PCs 4 to 6, vials 5, 6, and 9 appear to be forming a second group.