df = [
{ phase: "coronal gas", T: 10 ** 5.5, n_H: 4e-3, f_V: 0.5 },
{ phase: "H II gas", T: 10 ** 4, n_H: 10 ** 2, f_V: 0.1 },
{ phase: "Warm H I", T: 5000, n_H: 0.6, f_V: 0.4 },
{ phase: "Cool H I", T: 100, n_H: 30, f_V: 0.01 },
{ phase: "Diffuse H_2", T: 50, n_H: 100, f_V: 0.001 },
{ phase: "Dense H_2", T: 20, n_H: 10 ** 4.5, f_V: 1e-4 },
{ phase: "Stellar Outflows", T: 500, n_H: 1e4, f_V: 1e-6 }
]