Fig. 5
Daily Temperature Fluctuations by Logger Device. Hart Prairie temperatures for three-day periods in July, August and September 2016. The top three panels show data from thermocouples (measurements recorded every five minutes). The bottom three panels show data from HOBO loggers (measurements recorded once hourly). Black line shows data from the cone-warming treatment, dashed line shows data from the control, and red line is air temperature 1.5 m from the ground from a nearby weather station away from the forest overstory. Gray shading is the upper and lower bounds of the standard error range relative to the mean for each time point. Data represent averaged values across trees from which a standard error was calculated from averaged replicates within trees. Each line represents one data stream from a tree/treatment combination