The chart shown here reflects the average of prices at six South Florida groceries on June 8. Prices changed relatively little since April. Since The Miami Herald began tracking grocery prices in February, prices on most items have crept up slightly. The biggest increases were on bacon, which rose about 30 percent, and Roma tomatoes, which rose about 25 percent. Item May June One month change Loaf white bread, store-brand, 20 oz. $1.22 $1.36 $0.14 Cheddar cheese, store brand, 16 oz. $4.60 $5.30 $0.70 Dozen eggs, large, grade A $1.70 $1.65 -$0.05 Ground chuck, per pound $3.40 $3.67 $0.27 Bacon, store brand, 16-oz. package $4.96 $4.62 -$0.34 Gallon of whole milk, store brand, gallon $3.37 $3.51 $0.14 Tomatoes, Roma, 16 oz. $2.36 $1.94 $0.42 Green bell peppers, 16oz. $1.77 $1.70 -$0.07 Orange juice, store brand, half-gallon $2.95 $2.86 -$0.09 Stores surveyed: Milam’s in Miami Springs, Wal-Mart in Hialeah, Aldi in Deerfield Beach, Super Target in Davie, Publix in Fort Lauderdale and Winn-Dixie in Fort Lauderdale