The first line - also known as “line of death”. Playing unsupported stones on the first line is a typical novice’s mistake.
Stones on the second line are referred to as very low. Crawling along the second line to make territory is inefficient, therefore it is also called “the line of defeat”
Stones on the third line are referred to as low. You will get no influence and will be locked forever in your territory.
Stones on the fourth line are referred to as high. You will neither get enough territory, nor enough influence.
Stones on the fifth line are referred to as very high. Without any territory you will not be able to use your influence.
7th line - same as above
8th line - same as above
9th line - same as above
Tengen (“origin of heaven”) - the only good point.