Takoda is watching the tides off the coast of Cape Cod. For two days, Takoda records the height of the water, $h$, in feet. His results are shown in the graph below, where $t$ corresponds to the number of hours after 12:00 a.m. According to Takoda's research, approximately how much time passes between two consecutive high tides?

Please directly answer the question and provide the final value, e.g., 1, 2.5, 300.
Question: Takoda is watching the tides off the coast of Cape Cod. For two days, Takoda records the height of the water, $h$, in feet. His results are shown in the graph below, where $t$ corresponds to the number of hours after 12:00 a.m. According to Takoda's research, approximately how much time passes between two consecutive high tides?

Please first conduct reasoning, and then answer the question and provide the final value, e.g., 1, 2.5, 300, at the end.
Question: Takoda is watching the tides off the coast of Cape Cod. For two days, Takoda records the height of the water, $h$, in feet. His results are shown in the graph below, where $t$ corresponds to the number of hours after 12:00 a.m. According to Takoda's research, approximately how much time passes between two consecutive high tides?
