Table 2. Number of runs per subject.

	S1	S2	S3	S4	S5	S6	S7	S8	S9
Task 1	1	1	2	2	1	2	3	1	1
Task 2	2	1	2	2	1	2	3	1	2
Task 3	2	1	2	2	1	2	2	1	3