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. 2019 Nov 28;19(23):5244. doi: 10.3390/s19235244

Figure 8.

Figure 8

(a) Univariate calibration of Ca mass fraction calculated for data of the first field, R2 (443.496 nm) = 0.93, R2 (445.478 nm) = 0.94, R2 (616.217 nm) = 0.86 (individual wavelengths are offset for visibility), (b) Calibration applied to the second field, R2 = 0.93.