Help using logic to edit table

Hi,

I have a table indicating when high and low tides occur. I am trying to split the table in two: creating a table with only high tide information, and another table with only low tide information. There is a column in my main table that has either the letter H or L indicating high or low tides. There might be a better way to do this, and if so please feel free to share — my approach is to duplicate the main table and delete the rows associated with either H or L. I wrote the following code, but it does not work.

for row = 1:height(high_tides)
    if high_tides.High_Low == "L"
       high_tides(:) = []
    end
end

Can someone tell me what I’m doing wrong? Or is there a better way to go about this?

Thank you!