How heavy should a weighted blanket be?

Body Weight Blanket Weight
50 lbs.
6-7 lbs.
80 lbs.
9-10 lbs.
100 lbs.
11-12 lbs.
120 lbs.
13-14 lbs.
140 lbs.
15-16 lbs.
160 lbs.
17-18 lbs.
180 lbs.
19-20 lbs.
200 lbs.
21-22 lbs.