Table 3.
Square Root of Average Relative Contrast (RC)
| After 0 min | After 20 min | After 40 min | After 60 min | |
|---|---|---|---|---|
| Ex 1 | 1 | 1.14 | 1.50 | 2.92 |
| Ex 2 | 1 | 1.28 | 2.50 | 2.79 |
| Ex 3 | 1 | 1.81 | 3.48 | 4.92 |
| Ex 4 | 1 | 1.95 | 3.31 | 4.70 |
| Ex 5 | 1 | 1.97 | 4.28 | 6.38 |
| Ex 6 | 1 | 2.03 | 4.11 | 5.57 |
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