Figure 2: NMR measurements and (pseudo) two-dimensional mapping with Clustering NMR approach. T1 and T2relaxation times were carried on various edible oils (i.e., peanut, olive, sunflower, corn), with the label of (A, B, C, D) respectively using micro NMR relaxometry. One-dimensional mapping with (a) T1 relaxation time, (b) T2 relaxation time, and (c) (pseudo) two-dimensional mapping using a pair of (T1, T2) relaxation times. NMR measurements were carried out on each edible oils in quintuplicate manner with a total of 40 points (datasets). The clustering circles were drawn for eye-balling purposes. Details of the oils (e.g., manufacturers, fat compositions) were presented in Supp. Fig. 1. The box plots represent 25% and 75% quantile of the entire measurements. The diaganol line (T1=T2) represents the border limit where it is physically non-measurable. Two tailed Student“s T-test was used to calculate the P -value.