Assuming that your sample data resides in cells
A1:F6...
1. Paste (n-1) copies of A2:A6 directly beneath
cell A6 where n is the number of data columns (5
in this case).
2. Sort (in ascending order) all rows below 1:1
by the values in column A (cells A2:A26).
3. Insert 2 new columns before column B.
4. Enter the array formula, {=TRANSPOSE($D$1:$H$1)}
into cells B2:B6 and fill down by double-clicking
on the selection fill handle (the black square
in the bottom, right-hand corner of the selection).
Note: This is an array formula which must be
entered using the Control+Shift+Enter key
combination. The outermost braces, {}, are not
entered by you -- they're supplied by Excel in
recognition of a properly entered array formula.
5. Enter the array formula, {=TRANSPOSE(D2:H2)},
into cells C2:C6 and fill down by double-clicking
on the selection fill handle.
6. Select column A:C and perform a Copy/Paste Special
Values, and then Delete or Clear all cells other
than those in columns A:C.
Your results should be...
2,2,0.1
2,4,0.1
2,6,0.2
2,8,0.2
2,10,0.3
4,2,0.2
4,4,0.3
4,6,0.4
4,8,0.4
4,10,0.5
6,2,0.4
6,4,0.4
6,6,0.5
6,8,0.6
6,10,0.6
8,2,0.5
8,4,0.6
8,6,0.6
8,8,0.7
8,10,0.7
10,2,0.7
10,4,0.8
10,6,0.9
10,8,1
10,10,1