| Dataset | Year | Wavelengths (nm) | Spectral region | Correlation coefficient |
| Combineda | 2012 | 960 - 1140 | Near-infrared | rs = −0.64, p < 0.05, n = 120 |
|
| 2013 | 1060 - 1130 | Near-infrared | rs = −0.54, p < 0.05, n = 120 |
| Clark | 2012 | 1020 - 1100, 1170 - 1290 1310 - 1330, 1350 | Near-infrared Shortwave-infrared | rs = −0.51, p < 0.05, n = 20 |
|
| 2013 | 1110 - 1180 | Near-infrared | rs = −0.60, p < 0.05, n = 20 |
| LD00 | 2012 | 1010, 1020 | Near-infrared | rs = −0.76, p < 0.05, n = 20 |
|
| 2013 |
|
| NSb |
| LG03-14 | 2012 | 1170 - 1250, 1270 | Near-infrared | rs = −0.73, p < 0.05, n = 20 |
|
| 2013 | 1920, 1930, 2070 - 2120 | Shortwave-infrared | rs = 0.66, p < 0.05, n = 20 |
| LG03-19 | 2012 | 960, 970 | Near-infrared | rs = −0.83, p < 0.05, n = 20 |
|
| 2013 | 2250 | Shortwave-infrared | rs = 0.66, p < 0.05, n = 20 |
| Saline | 2012 | 970 | Near-infrared | rs = −0.59, p < 0.05, n = 20 |
|
| 2013 | 1030, 1100, 1110 | Near-infrared | rs = −0.80, p < 0.05, n = 20 |
| Y227-1 | 2012 | 1000 | Near-infrared | rs = −0.58, p < 0.05, n = 20 |
|
| 2013 |
|
| NS |