Two multi-wavelength interpretations of the GRB 140515A afterglow light curve in X-ray band (black dots, blue lines), SDSS-z′ band (yellow circles), J band (orange circles), H band (red circles, red lines) and radio band (green star, green lines). Dashed lines represent the solution in the “hard electron spectrum” scenario (p = 1.67). Solid lines describe the solution for the “multi-component” scenario (p = 2.1).