The Auditory Environment report reveals the quantity of each of 5 audio data categories for the recording:

Meaningful - Any live, in-the-room human vocalizations from adult male, adult female, key child, and other child speakers - that is, speaker labels MAN, FAN, CHN, and CXN.  Meaningful speech does not include overlap segments. Meaningful speech includes only segments that are considered to be near and clear to the child.  In general, the bar with the most green represents the region of the recording with the highest likelihood of language input and output.

Distant (+ Overlap) - Segments that don't match LENA's speaker models well due to quality or being too distant from the mic (MAF, FAF, CHF, CXF), plus all overlapping segments (OLN, OLF).  Overlap occurs whenever a human voice overlaps with something else - another human voice, sounds from a speaker, or noise.  LENA does not "credit" or apply counts to Overlap segments.  Usually, most of this blue category is made up of these overlap segments.

TV and Electronic Sounds - Sounds from a television, radio, or other electronic media.  These could be music, a TV show, synthesized toy sounds, incoming communication via Skype/FaceTime, or anything else emanating from a speaker.   This category represents the amount of time during which TV/electronic sounds were the dominant signal in the recording (TVN).

Noise - Bumps, jiggles, rattles, impact sounds, friction sounds, motors...all noises that don't come from a human vocal tract or an electronic speaker - LENA speaker label NON.

Silence & Background - Silence, faint noise, faint TV (SIL, NOF, TVF).