::: {.cell hash='03_Data_preprocessing_cache/revealjs/unnamed-chunk-20_72dc764484c4986fc617f327c0e3c7db'}

```{.r .cell-code}
names(flights)
```

::: {.cell-output .cell-output-stdout}
```
 [1] "year"           "month"          "day"            "dep_time"      
 [5] "sched_dep_time" "dep_delay"      "arr_time"       "sched_arr_time"
 [9] "arr_delay"      "carrier"        "flight"         "tailnum"       
[13] "origin"         "dest"           "air_time"       "distance"      
[17] "hour"           "minute"         "time_hour"     
```
:::
:::