pause on
use wits, clear

tab incident_hourint
label drop hourint
graph bar (count) icn, over(incident_hourint)
pause

use wits if dead>=9, clear
tab incident_hourint
label drop hourint
graph bar (count) icn, over(incident_hourint)
pause

use wits if region_id==6, clear
tab incident_hourint
label drop hourint
graph bar (count) icn, over(incident_hourint)
pause

use wits, clear
sum hourseg*
sum hourseg* if incident_hourint~=.
sum hourseg* if incident_hourint==. & approximate_time_flag~=.
pause

sum nhourseg*
sum nhourseg* if incident_hourint~=.
sum nhourseg* if incident_hourint==. & approximate_time_flag~=.