Unnamed

I have a table like this:

id, value, activity, week
1, 34, activity1, w4
2, 44, activity2, w5
3, 54, activity3, w6
4, 64, activity1, w5
5, 74, activity2, w6
6, 84, activity3, w5

How do I present weeks horizontally and activities vertically? (like below)


		w4	w5	w6
activity1	34	64
activity2		44	74
activity3		84	54