time_code	time_text
000000	All workers
0XXXXX	Time not reported
1XXXXX	12:01AM - 4:00AM
2XXXXX	4:01AM - 8:00AM
3XXXXX	8:01AM - 12noon
4XXXXX	12:01PM - 4:00PM
5XXXXX	4:01PM - 8:00PM
6XXXXX	8:01PM - 12midnight