title: Rounding up 5-min data to a complicated hourly basis
body: <p>I have my data as below:</p>
  
  <pre><code>Timestamp   Outbound Utilization (%)
  11/22/2017 9:55 12.356965
  11/22/2017 10:00    14.4424725
  11/22/2017 10:05    19.44614625
  11/22/2017 10:10    49.3823
  11/22/2017 10:15    51.21698
  11/22/2017 10:20    50.67409188
  11/22/2017 10:25    14.89324375
  11/22/2017 10:30    27.1916175
  11/22/2017 10:35    19.8268025
  11/22/2017 10:40    9.996577813
  11/22/2017 10:45    7.929271875
  11/22/2017 10:50    22.7705
  11/22/2017 10:55    32.611105
  11/22/2017 11:00    9.761414375
  11/22/2017 11:05    13.10104375
  </code></pre>
  
  <p>My date column should be rounded up to hourly data, but it should look like 10:05, 11:05, which means all data from 9:05 to 10:05 should be accumulated and shown as 9:05, 10:05 to 11:05 data should be shown as 10:05, something like this, does floor/round function work on this, or do we need to implement our own logic</p>