Sample | ρr (g/cm3) | ρb (g/cm3) |
PO 9 | 2.65 | 1.40 |
PO 10 | 2.63 | 1.37 |
PO 11 | 2.64 | 1.39 |
Arithmetic average | 2.04 | 1.38 |
Standard deviation | 0.008 | 0.012 |