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I've never seen it like that. Thanks for the explanation. With all due respect, I'm going to ask you one more thing. Is there something wrong with the mid-price calculation, too? 0.10543 is not the lowest ask price..

You're right! I've corrected it. Thanks for being very observant.
I appreciate it.

That's what these courses are for. First we learn, then we do homework. I noticed that while I was doing my homework, I wanted to point out one thing about calculation. it is still not true I think. That's the highest ask and lowest bid, not the highest bid and lowest ask.
Thank you, Professor.