PERIOD	TECHNICIAN	METHOD	MINUTES
1	1	3	90
1	2	4	96
1	3	1	84
1	4	2	88
2	1	2	90
2	2	3	91
2	3	4	96
2	4	1	88
3	1	1	89
3	2	2	97
3	3	3	98
3	4	4	98
4	1	4	104
4	2	1	100
4	3	2	104
4	4	3	106