The products are sold on an e-commerce platform, with a total of 5 categories introduced, encompassing 20 different items. Each screen can display 5 product slots. The sales records for these 5 days are as follows: Primary Chinese-English Correspondence “销售日期”：” Sale Date” “商品编号”：” Product Code” “销售数量”：” Quantity Sold” “品类编号”：” Category Code” “屏数”：” Screen Count” Based on the data provided in the question, which screen has the highest screen efficiency?