One key difference between yours and the previous one is: in the dissimilar tanks and the dissimilar pressures, you show the blocks as being the same size. Yeah, I know the numbers are different. But it seems to me it would benefit from making the blocks different size.
In the case of dissimilar pressures, there could be some white space at the top, symbolizing the “partially filled” lower pressure. In the case of dissimilar tanks, one tank could be longer (or maybe better, wider: the difference between 85 and 104s) than the other, and the blocks would therefore be a different size. That makes it much easier to see that this block does not cover that block.
Do with that thought what you will.