| S ize | B.D.(g/cm 3 ) | S ize | B.D.(g/cm 3 ) | S ize | B.D.(g/cm 3 ) |
| 12 | 2.0 0 -2. 08 | 36 | 90 | 1. 72 -1. 80 | |
| 14 | 1.98 -2.0 6 | 40 | 1.8 4 -1.9 4 | 100 | 1. 70 -1.7 8 |
| 16 | 1.9 6 -2.04 | 46 | 1. 83 -1. 93 | 120 | 1.6 8 -1.7 6 |
| 20 | 1.9 4 -2.02 | 54 | 1.7 9 -1. 90 | 150 | 1.6 5 -1.7 3 |
| 22 | 1.9 2 -2.0 0 | 60 | 1.7 7 -1.8 8 | 180 | 1. 63 -1. 71 |
| 24 | 1.9 2 -2.00 | 70 | 1. 76 -1.8 4 | 220 | 1. 60 -1.6 8 |
| 30 | 1.88-1.98 | 80 | 1. 74 -1. 82 |