_id	Month	unsafe_1958	unsafe_1959	unsafe_1960
1	JAN	  340	  360	  417
2	FEB	  318	  342	  391
3	MAR	  362	  406	  419
4	APR	  348	  396	  461
5	MAY	  363	  420	  472
6	JUN	  435	  472	  535
7	JUL	  491	  548	  622
8	AUG	  505	  559	  606
9	SEP	  404	  463	  508
10	OCT	  359	  407	  461
11	NOV	  310	  362	  390
12	DEC	  337	  405	  432