That actually is a pretty good CTR Rating Mine is only - Page CTR - 0.09% But he is exactly Right. Differnt niche's pay alot more. Some car ads that get clicked on mysite give me 50cents to a dollar per click! Maybe if you gave us a link to your website we coulf offer further help.
100% depends on your niche. Some topics pay very low while others pay high. If you have good content on your site you should be able to pull in at least .10 a click. My sites are averaging about .25 per click this month. I do focus on quality content.
Like mine somewhat, yeah it's bad, niche-dependant like others have said. Sometimes you just don't get enough advertisers on adsense that provide the same service you do.
Those are very low CPC... me got an average of $6.12 for 30 to 40 clicks. It depends on source of traffic anyway...