Figure 2

PSDs of the samples obtained from different tests: (a) YA-L6-Intact; (b) YA-L6-1.5; (c) YA-L6-1.6; (d) YA-L6-1.7; (e) YA-L6-1.8.
PSDs of the samples obtained from different tests: (a) YA-L6-Intact; (b) YA-L6-1.5; (c) YA-L6-1.6; (d) YA-L6-1.7; (e) YA-L6-1.8.