How many chocolates are there in the box with Snickers?

Answer the questions based on the information given below. Six boxes were filled with different chocolates viz. Cadbury, Nestle, Amul, Parle, Campco and Snickers. Each box has some number of chocolates viz. 12, 16, 20, 24, 28 and 32. All the information is not necessarily in the same order. The lowermost box is numbered 1 and the box immediately above is numbered 2 and so on. Only two boxes were placed between the box with 16 chocolates and Cadbury, where neither of them is placed at the topmost or the bottommost positions. Campco was placed in the box immediately above the box with 16 chocolates. Only two boxes are there between Campco and Parle, which has 12 chocolates. The lowermost box has 20 chocolates, which is 12 less than the number of chocolates in box 4. The box with Nestle has neither 20 nor 32 chocolates. The box with Amul has more number of chocolates than Snickers. The box with Campco has less number of chocolates than Cadbury but not kept below Cadbury