code	3/9	4/13	5/11	t ave	f(80)	grade
----	----	----	----	----	----	----
able	63	43	71	67	60	D
barn	85	90	98	94	80	A
bird	71	28	50	60.5	43	F
cell	78	84	84	84	46	C
core	94	89	84	91.5	71	B
drum	76	97	58	86.5	59	C
dune	94	97	98	102.5	67	A
fact	77	83	54	80	50	C
find	94	96	88	95	80	A
gate	71	28	33	52		F
inch	95	85	99	97	72	A
left	66	49	55	60.5	40	F
next	100	88	90	95	71	B
pool	92	83	68	87.5	61	B
rain	57	42	88	72.5		F
rest	82	85	88	86.5	64	B
risk	63	71	81	76	60	D
same	76	57	54	66.5		F
shed	97	62	100	98.5	73	A
show	58	85	54	71.5	49	C
side	92	71	26	81.5		F
sign	90	70	77	83.5	31	D
snow	92	94	79	93	77	A
taxi	87	72	63	79.5	65	C
test	90	55	87	88.5	64	C
that	86	65	30	75.5	53	C
time	72	27		49.5		F
unit	87	81	100	93.5	75	B
well	71	53	92	81.5	53	C
yoga	78	52	71	74.5	45	D