    EWR 2013     1   1    4 39.92 28.04 62.21      250   12.65858        NA</span></span>
<span><span class="co">## 5    EWR 2013     1   1    5 39.02 28.04 64.43      260   12.65858        NA</span></span>
<span><span class="co">##   precip pressure visib  time_hour</span></span>
<span><span class="co">## 1      0   1012.0    10 1357020000</span></span>
<span><span class="co">## 2      0   1012.3    10 1357023600</span></span>
<span><span class="co">## 3      0   1012.5    10 1357027200</span></span>
<span