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Appendix D. Relative humidity (RH, squares) and temperature (T, circles) just above a canopy of Fucus gardneri when exposed during low tide on 27 July 1999 at Friday Harbor Laboratories, San Juan Island, Washington, USA.

FIG. D1. Relative humidity (RH, squares) and temperature (T, circles) just above a canopy of Fucus gardneri when exposed during low tide on 27 July 1999 at Friday Harbor Laboratories, San Juan Island, Washington. M = mid tidal height; H = high tidal height.