Fig. 5. Trend of the parameter g(d) as a function of the day d of measurement. The various symbols are related to different groups of experiments: (b) (circles), (d) (squares) and (e) (triangles). The null effect corresponds to a value g ¼ 1.
Fig. 5. Trend of the parameter g(d) as a function of the day d of measurement. Thevarious symbols are related to different groups of experiments: (b) (circles), (d)(squares) and (e) (triangles). The null effect corresponds to a value g ¼ 1.