Location in the sHR diagram of the observational dataset presented in Simón-Díaz et al. (2016): red points stand for the stars presenting an important (or dominant) macroturbulent broadening contribution and green points correspond to stars for which either rotational broadening dominates or both vsini and v_mac are below 25 km s^-1 (see Simón-Díaz et al. 2016, for further details). The size of the points is linearly scaled with v_mac, ranging from 10 to 130 km s^-1. Instability domain predictions (as described in Sects. 4.1 and 4.2) for 1 ≤ ℓ ≤ 20 are colored in blue and red.