0
0.0010
They aren't. As with all other motorway junctions, they are numbered sequentially and are prefixed 'J'. M1 junction 13 (J13) is south Milton Keynes.
because the E13 + Ju6 = electricty
A range of cells, that can then be used in a function. The cells from B2 to E13 could be a range of cells that you want to total all the values in:
=SUM(B2:E13)
The Bird and The Bee - Whats in the Middle