Additional file 1 of Wood discoloration patterns depending on the light source

Additional file 1: Fig. 1. Spectral power distribution for the light sources used in experiments: Inc – incandescent lamp, Fl – fluorescent lamp

Additional file 3 of Wood discoloration patterns depending on the light source

Additional file 3: Fig. 1. Discolouration caused by exposure of pine heartwood to LED 6500 K versus content of extractives in wood from these boards

Additional file 2 of Wood discoloration patterns depending on the light source

Additional file 2: Table 1. Colour parameters (CIELA colour space) of unexposed wood with standard deviations in parentheses. Table 2. Average colour parameters corresponding to the highest DE values observed during the experiments. Fig. 1. Reflectance spectra of unexposed woo