Fig. 5

a Change in STD. b) STD reduction rate of all pixels in each interferogram resulting from the application of different correction methods. The correction methods are marked at the top of each column. Each black dot represents an interferogram. The percentages of interferograms with (a) reduced STD after correction are provided at the top left of each subpanel, and b mean values of STD reduction rate are provided at the down right of each subpanel