Group A (enamel slab 1) |
Group B (enamel slab 2) |
Group C enamel slab 3 |
Group D enamel slab 4 |
Group E enamel slab 5 |
|||||||
High | 244.7 | 243.4 | 249.2 | 268.6 | 275.1 | ||||||
Low | 216.3 | 205.4 | 210.3 | 245.3 | 211.1 | ||||||
Mean (SD) | 231.05 (±11.3 ) | 228.79 (±15.1) | 231.43 (±15.2) | 256.84 (± 6.77) | 263.74 (±18. 9) | ||||||
Median | 231.7 | 236.2 | 238.4 | 259.2 | 269.6 |