Table 1. Random probe combination performance.

# Probes	Mean R2	Standard deviation
5	0.93	1.0 × 10−1
10	0.98	1.2 × 10−2
25	0.99	9.7 × 10−3
50	0.99	4.6 × 10−3
75	0.99	3.6 × 10−3
100	0.99	2.5 × 10−3
200	0.99	2.1 × 10−3
300	0.99	1.6 × 10−3
400	0.99	1.4 × 10−3
500	0.99	1.3 × 10−3
600	0.99	1.3 × 10−3
700	0.99	1.1 × 10−3
800	0.99	9.5 × 10−4
900	0.99	8.2 × 10−4
1,000	0.99	8.6 × 10−4
2,000	0.99	6.1 × 10−4
3,000	0.99	5.3 x10−4
4,000	0.99	4.6 × 10−4
5,000	0.99	3.5 × 10−4
6,000	0.99	3.0 × 10−4
7,000	0.99	2.6 × 10−4
8,000	0.99	1.5 × 10−4
9,000	0.99	1.3 × 10−4
10,000	0.99	NA