The -coefficients for different tube-like ICs. The top row demonstrates the case of 1 displaced tube with the Gaussian background (iii): left: at , right: at . The 2nd row represents 1 displaced tube on the top of the Woods-Saxon distribution (vii): left: at , right: at . The 3rd row corresponds to 3 tubes on the top of the Gaussian distribution (iv): left: fm, right: fm. The 4th row is related to: left: 4 tubes with the Gaussian background (v), right: 10 tubes with the Gaussian background (vi).