Table 3. Intensity counts from 12 detector fibre bundles with individual source on an adult forehead.

Detector number	Source 1	Source 2	Source 3	Source 4	1 and 3 SNR	2 and 4 SNR
1	490	505	7	5	70.00	101.00
2	2506	2402	12	4	208.83	600.50
3	956	2543	16	5	59.75	508.60
4	120	8655	5	4	24.00	2163.75
5	9	4636	32	4	3.56	1159.00
6	57	2584	421	6	7.39	430.67
7	7	1621	2737	76	391.00	21.33
8	4	98	2601	8	650.25	12.25
9	5	8	3210	143	642.00	17.88
10	5	53	1018	1279	203.60	24.13
11	4	42	948	3098	237.00	73.76
12	5	14	175	45	35.00	3.21