code	3/14	4/25	5/9	t ave	f(140)	grade
----	-----	-----	-----	-----	-----	-----
city	70	77	60	73.5	93	C
data	56	79	66	72.5	84	C
disk	83	80	83	83	111	B
more	92	88		90	92	B
onto	70	94		82	62	C
plan	47			23.5	16	F
rose	48	72	47	60	108	C
solo	97	63	45	80	125	B
wave	88	61	80	84	91	C
with	81	85		83	63	C