Representative successful results of the Tsunakawa-Shaw archeointensity (paleointensity) experiments. The results are shown for (a) sample 5 from floor surface and (b) sample 16 from −20-cm level. The left-hand (right-hand) side diagrams indicate results from the first (second) laboratory heating. Closed symbols correspond to coercivity intervals for the linear segments. Orthogonal vector-end-point diagrams for the AF demagnetization on NRM are also displayed as insets, where closed (open) symbols indicate projections onto horizontal (vertical) planes. Units are in 10−5Am2/kg.