Figure 8. Detailed progress for SDT. ( a ) 11 μs to 12 μs; ( b ) 24 μs to 25 μs; ( c ) 33 μs to 34 μs. Figure 8. Detailed progress for SDT. ( a ) 11 µ s to 12 µ s; ( b ) 24 µ s to 25 µ s; ( c ) 33 µ s to 34 µ