English: This diagram shows that how many "buildings" that can be seen from left and right side of the city block as highlighted in purple Number represent the amount of blocks can be seen .
In top example, we can see only 2 blocks that is 4th storey (3 storeys are blocked by it) and 5th storey height (1th and 2th storey are blocked by it)
In bottom example, we can see only 2 blocks that is 2th storey (1th storey are blocked by it) and 5th storey height (3th and 4th storey are blocked by it)
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