eCPM is earning per 1000 impressions. You have 1 click from 6 impression so your earning is $342.2/1000*6 = $2.05 It depends on your niche. But I would say that your niche is pretty good because you got $2.05 for just 1 click.
ya thanks akeblogger, now i refreshed the formula, i was forgetting that, well my niche is computer technology, my blog in the link...thanks again...