Top: color map of the velocity integrated (in the range 0–40 km s^-1) intensity of [C I] J = 1 → 0 in M17 SW. The peak emission is 240 K km s^-1. The contour levels are 25%, 50%, 75%, and 90% of the peak emission. Bottom: color map of the integrated intensity of [C I] J = 2 → 1 (from Pérez-Beaupuits et al. 2010) convolved to the beam size () of the [C I] J = 1 → 0 line, with a peak emission of 280 K km s^-1 . The contour levels are as described above. The reference position (Δα = 0, Δδ = 0) is as in Fig. 2.