Residual of an energy input of 100 % at a height of 240 km (black-solid line). Top: linear scale. Bottom: logarithmic scale. The red pluses and blue diamonds give the corresponding values of FA12 for a high (case a) and low (case b) magnetic fill factor. The green asterisks give the values of ST08 for acoustic waves (case a), the orange triangles those of gravity waves (case b). The purple squares were taken from Felipe et al. (2011) and pertain to magneto-acoustic waves in a sunspot umbra.