Thank you

If a recipe calls for the following: 1oz citra 7 days 1oz mosaic 7 days 1 oz Amarillo 7 days 1 oz citra 3 days 1 oz galaxy 3 days 1 oz cascade 3 days Does this mean 3 oz total for 7 days or 1 oz of each for 7 days each? Confusing. This is what some recipes indicate. Thank you for you help.