The monthly sales for Yazici Batteries, Inc., were as follows:
Month …………………………… Sales
January …………………………… 20
February ………………………….. 21
March …………………………….. 15
April ………………………………. 14
May ……………………………….. 13
June ………………………………. 16
July ………………………………. 17
August …………………………… 18