The following graph is a spectrum taken with CCDSPEC today in our garage.
Compare this with a typical fluorescent bulb spectrum from Wikipedia also accessed today (below, https://commons.wikimedia.org/wiki/File:Fluorescent_lighting_spectrum_peaks_labelled.gif):
The peaks are the same as in my spectrum.
Wikipedia explains the different peaks:
Wikipedia licence (see URL above): “Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.”