http://www.stat.columbia.edu/~gelman/arm/examples/radon/cty.dat	143270	6a02f8e28a0afce93701dd7136761b317e0b331742663b27655ae13c217e9629	cty.dat
http://www.stat.columbia.edu/~gelman/arm/examples/radon/srrs2.dat	1650106	17b11e80f3d22e2a30b283acc83c2cb7e400b96e4a70188dfe4eb3df36f184cb	srrs2.dat
