title: put-metric-data command does not create plot in cloud watch
body: <p>I am trying to plot a new metric using Amazon CloudWatch.</p>
  
  <p>I have been referring to the <a href="http://docs.aws.amazon.com/cli/latest/reference/cloudwatch/put-metric-data.html" rel="nofollow noreferrer">AWS CLI documentation for <code>put-metric-data</code></a>.</p>
  
  <p>I have created the following test JSON: </p>
  
  <pre><code>[{"MetricName":"total_log_count" ,"Timestamp":"Saturday, April 08, 2017 00:00:00 AM","Value":73566,"Unit": "Count"},{"MetricName":"total_log_count" ,"Timestamp":"Sunday, April 09, 2017 00:00:00 AM","Value":61385,"Unit": "Count"},{"MetricName":"total_log_count" ,"Timestamp":"Monday, April 10, 2017 00:00:00 AM","Value":63467,"Unit": "Count"},{"MetricName":"total_log_count" ,"Timestamp":"Tuesday, April 11, 2017 00:00:00 AM","Value":60585,"Unit": "Count"},{"MetricName":"total_log_count" ,"Timestamp":"Wednesday, April 12, 2017 00:00:00 AM","Value":61951,"Unit": "Count"}]
  </code></pre>
  
  <p>and executed the JSON file with below command from an EC2 instance: </p>
  
  <pre><code>aws cloudwatch put-metric-data --namespace "Usage Metrics" --metric-data file://test.json  
  </code></pre>
  
  <p>The command is executed successfully and the new metric is created in CloudWatch but the graph is not getting displayed.</p>
  
  <p>Have I done anything wrong in the JSON or is there any log feature that will help me to debug data in CloudWatch?</p>