Parameter    Position
h    Place the float here, i.e., approximately at the same point it occurs in the source text (however, not exactly at the spot)
t    Position at the top of the page.
b    Position at the bottom of the page.
p    Put on a special page for floats only.
!    Override internal parameters LaTeX uses for determining "good" float positions.
H    Places the float at precisely the location in the LATEX code. Requires the float package. This is somewhat equivalent to h!.