{"January": {"Week1": 2.5, "Week2": 2.2, "Week3": 2.8, "Week4": 3.1}, "February": {"Week1": 3.3, "Week2": 3.5, "Week3": 3.2, "Week4": 3.6}, "March": {"Week1": 2.9, "Week2": 3.1, "Week3": 3.5, "Week4": 3.7}, "April": {"Week1": 3.2, "Week2": 3.5, "Week3": 3.4, "Week4": 3.8}, "May": {"Week1": 3.6, "Week2": 3.7, "Week3": 3.9, "Week4": 4.1}, "June": {"Week1": 4.2, "Week2": 4.1, "Week3": 4.5, "Week4": 4.8}, "July": {"Week1": 4.7, "Week2": 4.8, "Week3": 4.9, "Week4": 5.1}, "August": {"Week1": 5.3, "Week2": 5.2, "Week3": 5.6, "Week4": 5.8}, "September": {"Week1": 5.9, "Week2": 6.1, "Week3": 6.3, "Week4": 6.5}, "October": {"Week1": 6.8, "Week2": 7.1, "Week3": 7.4, "Week4": 7.7}, "November": {"Week1": 8.1, "Week2": 8.5, "Week3": 8.9, "Week4": 9.2}, "December": {"Week1": 9.5, "Week2": 9.9, "Week3": 10.3, "Week4": 10.6}} The outermost key corresponds to the month and the innermost key corresponds to the week number. The values represent the return on ad spend (ROAS) for that particular week and month.