tar     nicotine  weight co
14.1	0.86	0.9853	13.6
16.0	1.06	1.0938	16.6
29.8	2.03	1.1650	23.5
8.0	0.67	0.9280	10.2
4.1	0.40	0.9462	5.4
15.0	1.04	0.8885	15.0
8.8	0.76	1.0267	9.0
12.4	0.95	0.9225	12.3
16.6	1.12	0.9372	16.3
14.9	1.02	0.8858	15.4
13.7	1.01	0.9643	13.0
15.1	0.90	0.9316	14.4
7.8	0.57	0.9705	10.0
11.4	0.78	1.1240	10.2
9.0	0.74	0.8517	9.5
1.0	0.13	0.7851	1.5
17.0	1.26	0.9186	18.5
12.8	1.08	1.0395	12.6
15.8	0.96	0.9573	17.5
4.5	0.42	0.9106	4.9
14.5	1.01	1.0070	15.9
7.3	0.61	0.9806	8.5
8.6	0.69	0.9693	10.6
15.2	1.02	0.9496	13.9
12.0	0.82	1.1184	14.9