QUOTE(Nerzzzzz @ Dec 31 2013, 01:46)

Does anyone know the exact range for this?
I guess that 200-400 is as good as we'll get.
I was bored so I crawled all posts in the
Events and Monster Battles since middle November and the 200-400 estimate is very good. My results are below (numbers mean the amount of credits gained during the dawn event):
min: 5 max: 450
mean: 299.13211401 median: 298.0
std. deviation: 59.5476550329
The maximum is due to a guy called
Seizhan and his
two posts. I guess the dawn was buggy for him, but now he got an award so it shan't happen anymore.
The minimum is due to the
recent changes to dawn, but the interesting fact is that there were only 22 posts under 200 credits (from more than 10000 dawn posts, disconsidering people with awards and donators). These 22 points are: [60,25,67,167,7,9,5,10,9,8,9,5,9,7,9,5,8,10,7,6,6,7] Most are <=10 credits, probably posted by Lurkers that never posted before.
Here's the histogram (you can see the 200-400 range there):

And here's the data disconsidering the outlires at <200 and >400. It's almost the same as above:
mean: 299.67823578673119 median: 299.0
std. deviation: 58.21539989472555