Table 1: Diameter ranges (d–D), mean diameter, glass bead density and porosity of the glass bead assemblages for the M, S, and SL glass beads.

dD rangesMean diameterBead densityPorosity

Type M
1.50–1.701.502.540.38
1.90–2.302.002.500.37
2.40–2.702.502.540.38
2.70–3.102.802.500.36
3.80–4.103.902.520.37

Type S
0.40–0.600.452.510.40
0.70–1.100.852.520.39
1.00–1.401.102.530.39
1.70–2.201.802.520.39
2.50–3.152.502.510.38
2.85–3.603.002.530.39
3.75–4.503.752.510.37

Type SL
0.50–0.800.712.610.40
0.70–1.050.852.610.39
0.90–1.501.102.590.39
1.60–2.201.802.610.39
2.50–3.202.702.600.38