The axis going up is amplitude, the one going right and down is time, and the new axis rightward and upward (left to right on the right-hand chart) is frequency.
The left chart doesn't show the frequency axis. The right one doesn't show time.
The wave shown on the left in the dark cyan color is (shown to be) composed of two different waves of two frequencies shown on the left in gray and in the space between charts as dark cyan. The higher frequency one is lower amplitude.
The GPS 'time zone' does not account for leap seconds at all and is currently 18 seconds ahead of UTC. The GPS navigation messages from the satellites do however include the current offset.
I started taking lessons about a year ago. I'm glad I have. At least I feel like I might have a chance if something happens and I end up in deeper water than I can just stand in.
For some reason they don't mention in the description that most or all of these games are not videogames, they are tabletop role playing game manuals. (The digital downloads are .pdf files)
Nothing wrong with that of course, but it certainly seems like an important detail.
The axis going up is amplitude, the one going right and down is time, and the new axis rightward and upward (left to right on the right-hand chart) is frequency.
The left chart doesn't show the frequency axis. The right one doesn't show time.
The wave shown on the left in the dark cyan color is (shown to be) composed of two different waves of two frequencies shown on the left in gray and in the space between charts as dark cyan. The higher frequency one is lower amplitude.