Fig. 4From: Relationship between the Northern Pacific Gyre Oscillation and tree-ring cellulose oxygen isotopes in northeastern JapanResults of MTM analysis for a tree-ring δ18O, b MJ relative humidity, and c MJ precipitation in Sendai station. Analysis period is from A.D. 1927 to 2010. Red solid lines indicate 95 and 99% significant level, and black dot line corresponds to 57-year cycleBack to article page