Table 2.

Number of ERG records used to determine the age effect

Scotopic
Group	35					55		73		113
Number of records	WT-15; KO-19					WT-8; KO-9		WT-7; KO-11		WT-7; KO-10
Days	31	34	35	38	42	52	59	68	77	97	98	113	130
WT	4	1	4	4	2	6	2	1	6	2	1	2	2
KO	3	1	9	2	4	7	2	2	9	2	2	4	2

Photopic
Group	35					55		73		105
Number of records	WT-15; KO-19					WT-7; KO-11		WT-5; KO-8		WT-4; KO-6
Days	31	34	35	38	42	52	59	68	77	97	98	113	130
WT	4	2	3	6	0	5	2	1	4	2	0	2	0
KO	3	1	9	6	0	9	2	2	6	2	0	4	0

For each section, the top row (group) shows the median day for each age group; the second row shows the number of records for each group; the third row (day) shows the days that were combined into each group; and the fourth and fifth rows show the number of records for the different postnatal days for WT and KO mice. The total number of mice used was 12 WT and 17 KO; several mice were used for more than one time point.