The following table shows the rate of water flow (in L/min) through a dam.

t (min)	1	4	7	10	13	16	19
V'(t) (L/min)	5	1	5	10	10	9	5

Approximate the total volume of water that passed through the dam from `t=1` to `t=19` using Simpson's rule, with `n=6`.

  liters