"Artifacts," by Scott G. Ortman

Table 23. Exterior Paint on Rim Sherds from White Ware Bowls
  Latest Tree-Ring Date (A.D.)a No. of Bowl Rim Sherds Analyzed Percent with Continuous Exterior Paint
Sand Canyon Locality Sites
   Lillian's Site 1214vv 79 2.6
   Roy's Ruin 1223vv 107 1.1
   Sand Canyon Pueblo 1277vv 798 15.3
Woods Canyon Pueblo
   Early Pueblo III 1157+vv 152 2.8
   Late Pueblo III 1276vv 81 12.2
aLaboratory of Tree-Ring Research date symbols:
vv = there is no way of estimating how far the last ring is from the true outside; many rings may be lost.
+ = one or a few rings may be missing near the outside whose presence or absence cannot be determined because the series does not extend far enough to provide adequate cross dating.
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