New-car sales of a dealer during the past year are shown in the following table, along with monthly seasonal relatives. Month Units Sold Seasonal Relative Jan 634 0.84 Feb 638 0.84 Mar 631 0.76 Apr 816 0.95 May 787 0.89 Jun 910 1.06 Jul 835 0.96 Aug 885 1.20 Sept 926 1.27 Oct 897 1.27 Nov 947 1.30 Dec 918 1.30