Results obtained from RADEX modeling for the main beam brightness temperature ratios of various transitions of C₂ H and c-C₃H₂ toward Her 36 in a log₁₀(n(H₂)) versus T_k grid. Left and right panels: low velocity and high velocity components, respectively. The two contours per color represent the RADEX modeling output values equal to the upper and lower bounds of the value obtained for each ratio from the observationswith an error of 20%.