Table 2.

Median signal-to-background ratio (SBR) recorded for Visionsense^TM VS3 Iridium and IC-Flow^TM under varying lighting conditions.

	IC Flow
Lighting	Mean SBR	Standard Deviation	Range
Dark	5.19	6.99	0.91–19.8
Room Light	4.88	6.52	0.9–19.41
LED	1.79	1.2	0.77–4.48
Older halogen	1.99	1.34	0.86–4.98
	VisionsenseTM VS3 Iridium
Lighting	Mean SBR	Standard Deviation	Range
Dark	40.69	74.19	0.85–221.6
Room Light	24.69	63.74	1–253.85
LED	19.82	62.06	0.86–253.69
Older halogen	13.67	41.05	0.7–212.85