log_radon	floor	county	log_uranium_ppm
0	0.788457	1	0	-0.689048
1	0.788457	0	0	-0.689048
2	1.064711	0	0	-0.689048
3	0.000000	0	0	-0.689048
4	1.131402	0	1	-0.847313