Sound pressure level and particle acceleration levels in the three orthogonal Cartesian directions and for PAL of the three axes combined at each test frequency.

SPL-sound pressure level (dB re 1 µPa), PAL-particle acceleration level (dB re 1 µm/s2) in the vertical (vert), rostrocaudal (rc), and lateral (lat) axis; PAL comb-PAL combined of the three directions (magnitude sensu Casper and Mann (2006) [22] and Wysocki et al. (2009) [x]. The PAL comb was calculated based on the particle acceleration of each axis in µm/s2 as 20*log(sqrt(x2+y2+z2)).