Top panel: distribution of detected significant frequencies of EE Cam. Bottom panel: Amplitude spectrum of the residuals after 40 frequencies are subtracted. This shows that many additional small-amplitude pulsation frequencies are present, especially near the previously detected and prewhitened high frequencies. These peaks have an amplitude signal/noise ratio under the limit of 4.0. For these peaks we cannot separate instrumental noise from effects of nearby pulsation modes and spurious peaks caused by undetected amplitude variability.