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Table I
Pearson correlation matrix between physical and vibrational properties (above-diagonal for total sampling, under-diagonal 1st sampling). Correlations in bold are significant at P < 0.001; bold italic: P < 0.01; italic: P < 0.05.
| 1st sampling (N = 70) | ρ | 0.24 | –0.46 | –0.35 | –0.49 | –0.36 | –0.71 | – | –0.38 | –0.28 | –0.57 | 1st + 2ndsamplings (N = 94) |
| 0.36 | E′/ρ | –0.73 | 0.40 | – | – | – | – | – | – | – | ||
| –0.56 | –0.73 | tanδ | 0.25 | 0.68 | 0.45 | 0.54 | – | 0.22 | – | 0.48 | ||
| –0.30 | 0.42 | 0.24 | E′′/ ρ | 0.88 | 0.46 | 0.58 | – | 0.28 | 0.21 | 0.48 | ||
| –0.50 | – | 0.66 | 0.89 | Δtanδ | 0.57 | 0.70 | – | 0.31 | 0.22 | 0.59 | ||
| –0.47 | – | 0.60 | 0.50 | 0.67 | EMC | 0.56 | -0.21 | 0.21 | – | 0.45 | ||
| –0.71 | – | 0.65 | 0.54 | 0.72 | 0.69 | L* | – | 0.67 | 0.54 | 0.83 | ||
| – | – | – | – | – | –0.26 | – | a* | 0.65 | 0.80 | – | ||
| –0.41 | – | 0.28 | 0.25 | 0.32 | 0.26 | 0.67 | 0.66 | b* | 0.96 | 0.65 | ||
| –0.34 | – | – | – | – | – | 0.54 | 0.81 | 0.97 | C* | 0.43 | ||
| –0.58 | – | 0.58 | 0.48 | 0.65 | 0.58 | 0.85 | – | 0.66 | 0.47 | h* |