Difficulty understanding my readouts

Hello. I have great difficulty understanding my readouts and would like some assistance. I will just post one this time but will ask about others later. I assume I am in the correct Forum?
My questions:
1 What does the dark Red and the light Red colours signify?
2 What do the blue dots and connecting lines signify?
3 What do the icons and figures at the bottom refer to, ie >200nm, 200nm, etc?

Hope someone can help me on this, once I learn what the charts mean I can get a lot more out of my station.

Thanks./Bill CYBR

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