C14 Radiocarbon Dating - Index - Portknockie, Green Castle
| Lab Analysis ID | Material Dated | Uncalibrated date bp | Uncalibrated date bc/ad | Calibrated date |
|---|---|---|---|---|
| GU-1816 | charcoal (Null) |
1155 bp +/-50 | ad 795 +/-50 | cal AD 720 to 1000 |
| GU-1817 | charcoal (Null) |
1115 bp +/-50 | ad 835 +/-50 | cal AD 780 to 1020 |
| GU-1818 | charcoal (Null) |
2815 bp +/-55 | 865 bc +/-55 | 1130 to 830 cal BC |
| GU-1819 | charcoal (Null) |
2835 bp +/-105 | 885 bc +/-105 | 1400 to 800 cal BC |
| GU-1820 | charcoal (Null) |
1210 bp +/-85 | ad 740 +/-85 | cal AD 660 to 990 |
| GU-1821 | charcoal (Null) |
2650 bp +/-55 | 700 bc +/-55 | 930 to 560 cal BC |
| GU-1822 | charcoal (Null) |
1620 bp +/-115 | ad 330 +/-115 | cal AD 100 to 650 |
| GU-1833 | charcoal (Null) |
0 bp +/-0 | ad 1950 +/-0 | not calibrated |
| GU-2092 | charcoal (Null) |
1290 bp +/-50 | ad 660 +/-50 | cal AD 650 to 880 |
| GU-2093 | charcoal (Null) |
2250 bp +/-50 | 300 bc +/-50 | 400 to 200 cal BC |
| UB-2149 | charcoal (Null) |
1265 bp +/-40 | ad 685 +/-40 | cal AD 660 to 880 |
| UB-2150 | charcoal (Null) |
1210 bp +/-45 | ad 740 +/-45 | cal AD 680 to 960 |
