| UV | Ultraviolet rays |
| BN | Xishuangbanna, China |
| XM | Xiamen, China |
| JN | Jinan, China |
| Average temperature | |
| Tmax | Maximum temperature |
| Tmin | Minimum temperature |
| RH | Relative humidity |
| Rf | Average annual rainfall |
| SD | Annual sunshine duration |
| Umax | Maximum wind speed |
| Is | Annual solar irradiance |
| ΔE | Color difference |
| ATR-FTIR | Attenuated total reflection Fourier-transform infrared |
| XPS | X-ray photoelectron spectroscopy |
| SEI | Secondary electron images |
| BSE | Backscattered electron images |
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