Top: general picture of the nebula NGC 6164/5 and definition of the nomenclature used in the present paper. North is up and east is left. The small white circles represent the positions of the Spitzer IRS spectra whilst the green squares give the footprints of the Herschel/PACS field of view. The NW and SE lobes are indicated by gray arrows and the inner zones of ejecta are represented in red. Bottom: Hα image of NGC 6164/5 taken from the SuperCosmos Hα Survey (Parker et al. 2005). The white boxes represent the areas of the nebula analyzed by Leitherer & Chavarria (1987) whilst the red arrows represent the positions analyzed by Dufour et al. (1988).