Abbey Church, St Albans, Hertfordshire, United Kingdom - BRIT091 Additional Site Information Robert E. Howard R.R. Laxton Cliff D. Litton NOTES: Tree-ring analysis of timbers from the presbytery roof, Abbey church of St Albans, St Albans, Hertfordshire The ring width series for samples included in site sequence STACSQ03 which spans the period AD 969-1053. Reference: Howard R E, Laxton R R & Litton C D. 2001. Tree-ring analysis of timbers from the presbytery roof, Abbey church of St Albans, St Albans, Hertfordshire. Centre for Archaeology Report 32/2001 Historic England website, Research results: https://research.historicengland.org.uk/redirect.aspx?id=5014|TREE-RING%20ANALYSIS%20OF%20TIMBERS%20FROM%20THE%20PRESBYTERY%20ROOF,%20ABBEY%20CHURCH%20OF%20ST%20ALBAN'S,%20ST%20ALBANS,%20HERTFORDSHIRE COFECHA output: Chronology file name : BRIT091.CRN Measurement file name : BRIT091.RWL Date checked : 15NOV19 Checked by : B. Bauer Beginning year : 969 Ending year : 1053 Principal investigators: Robert E. Howard R.R. Laxton Cliff D. Litton Site name : Abbey Church Site location : UK Species information : QUSP OAK Latitude : 5145 Longitude : -00021 Elevation : M Series intercorrelation: 0.914 Avg mean sensitivity : 0.177 Avg standard deviation : 0.466 Avg autocorrelation : 0.619 Number dated series : 4 Segment length tested : 50 Number problem segments: 0 Pct problem segments : 0.00 PART 5: CORRELATION OF SERIES BY SEGMENTS: Abbey Church 11:23 Fri 15 Nov 2019 Page 5 ----------------------------------------------------------------------------------------------------------------------------------- Correlations of 50-year dated segments, lagged 25 years Flags: A = correlation under .3281 but highest as dated; B = correlation higher at other than dated position Seq Series Time_span 950 975 1000 1025 999 1024 1049 1074 --- -------- --------- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- 1 STAC32A 995 1052 .92 .95 .95 2 STAC32B 995 1052 .95 .96 .96 3 STAC34A 969 1053 .90 .94 .93 .94 4 STAC34B 969 1053 .89 .93 .96 .93 Av segment correlation .89 .93 .95 .95 PART 7: DESCRIPTIVE STATISTICS: Abbey Church 11:23 Fri 15 Nov 2019 Page 6 ----------------------------------------------------------------------------------------------------------------------------------- Corr //-------- Unfiltered --------\\ //---- Filtered -----\\ No. No. No. with Mean Max Std Auto Mean Max Std Auto AR Seq Series Interval Years Segmt Flags Master msmt msmt dev corr sens value dev corr () --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- 1 STAC32A 995 1052 58 3 0 .922 1.68 2.98 .476 .677 .172 2.73 .518 -.028 1 2 STAC32B 995 1052 58 3 0 .946 1.68 2.92 .474 .674 .174 2.71 .541 -.040 1 3 STAC34A 969 1053 85 4 0 .908 1.79 2.99 .458 .579 .179 2.72 .610 -.004 1 4 STAC34B 969 1053 85 4 0 .894 1.79 2.98 .461 .582 .181 2.73 .590 .012 1 --- -------- --------- ----- ----- ----- ------ ----- ----- ----- ----- ----- ----- ----- ----- -- Total or mean: 286 14 0 .914 1.74 2.99 .466 .619 .177 2.73 .572 -.011