Identifying Hosts not sending data for more than 6 hours

| tstats latest(_time) as latest where index!="*_" earliest=-9h by host index sourcetype
| eval recent = if(latest > relative_time(now(),"-360m"),"1","0"), LastReceiptTime = strftime(latest,"%c")
| where recent=0
| sort LastReceiptTime
| eval age=now()-latest
| eval age=round((age/60/60),1)
| eval age=age."hour"
| fields - recent latest