title: Y axis numbers change when zoom in and out
body: <p>I deployed graphite with statsd on ubuntu 14.04 and then pump some incremental numbers to that.
  What I see is when I zoom in like last 24 minutes, it shows 1000 on y axis which is coorrect. Then when I zoom out to 24 hour, that number goes down to 500.
  I tried several test data generation and I see same behavior;<a href="https://i.stack.imgur.com/ylusi.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ylusi.png" alt="24 hours"></a> <a href="https://i.stack.imgur.com/gp1C4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/gp1C4.png" alt="24 mins"></a></p>
  
  <p>It shows the correct numbers for 2 hours perpective.
  <a href="https://i.stack.imgur.com/zhnpo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/zhnpo.png" alt="enter image description here"></a>
  I would appreciate if anyone can shed some lights to this.
  Storage-schema.conf;</p>
  
  <pre><code>[carbon]
  pattern = ^carbon\.
  retentions = 60:90d
  
  [stats]
  pattern = ^stats.*
  retentions = 10s:6h,1min:7d,10min:5y
  </code></pre>
  
  <p>storage-aggregation.conf</p>
  
  <pre><code>[min]
  pattern = \.lower$
  xFilesFactor = 0.1
  aggregationMethod = min
  
  [max]
  pattern = \.upper$
  xFilesFactor = 0.1
  aggregationMethod = max
  
  [sum]
  pattern = \.sum$
  xFilesFactor = 0
  aggregationMethod = sum
  
  [count]
  pattern = \.count$
  xFilesFactor = 0
  aggregationMethod = sum
  
  [count_legacy]
  pattern = ^stats_counts.*
  xFilesFactor = 0
  aggregationMethod = sum
  
  [default_average]
  pattern = .*
  xFilesFactor = 0.3
  aggregationMethod = average
  </code></pre>