Time-Frequency Characteristics of Fluctuating Pressure on the Bottom of the Stilling Basin with Step-Down Floor Based on Hilbert–Huang Transform

Table 5

Marginal spectral amplitude table ( Pa).

Q (m³/s)	η = 0.025	η = 0.075	η = 0.125	η = 0.175	η = 0.225	η = 0.325	η = 0.450	η = 0.650
30	9.2	10.3	5.9	2.7	2.3	2.1	1.8	8.4
50	168	419	78.5	35	37	26.8	23.6	7.4
70	340	1200	226	87	91.3	69.6	46	21.6
90	540	2040	430	144	133	113	88.6	46.5