x-axis: daily hours from 0 to 23 (UTC)
y-axis: last 90 days, span given in title (begin of span = 0, end = yesterday = 89)
z-axis: 75% percentile of noise within each hour segment (in nm/s), bp-filtered between 4 and 14 Hz, peak amplitudes above 97.0% percentile (alternative 94.0%) clipped and smoothed using median filter of length 3.
Use mouse buttons and wheel for turning, shifting and zooming of the figure.