Line list 14 Coronal Hole Selection (NIS) - 8 lines He II 303.78 (2) NIS2 771 Mg X 624.94 (1) NIS2 920 O IV 554.52 (1) NIS2 320 Si IX 341.95 (1) NIS1 458 Si IX 349.87 (1) NIS1 571 Mg IX 368.06 (1) NIS1 831 Si XI 303.33 (2) NIS2 764 He I 584.33 (1) NIS2 574