This data shows, in order from the top, (a) xylem water flux, (b) vapor pressure deficit, (c) air temperature, (d) soil temperature profile, (e) bole temperature, and (f) bole dielectric constant (real part, C-band) as observed in the NSA old black spruce stand from April 10 (DOY 100) through November 6 (DOY 310), 1994.