Spectrum of nitrogen in the range λ320–λ350: the spectrum was recorded with our moderate-resolution LoWEUS spectrograph at the EBIT-I electron beam ion trap at an electron beam energy of 1000 eV. The line markers from fits to the data are visual aids only as the actual number of line components that in spectral line fits of blends can be discerned may depend on the available spectral resolution. Identified spectral features are labeled by the corresponding spectrum. Lines that are recognized as second diffraction order images are denoted “2”. The approximate band pass function of the SDO/AIA λ335 channel is indicated in the top panel. The second-diffraction order oxygen lines indicated are the same as in Fig. A.1, where a high-resolution measurement of these lines in first diffraction order is also shown.