Delta, United, and American Airlines announced purchases of planes on July 18 (7/18), February 12 (2/12), and October 7 (10/7), respectively.

Delta				United				American
Date	Market Return	Company Return		Date	Market Return	Company Return		Date	Market Return	Company Return
7/12	.47	.73		2/8	.96	1.32		10/1	.67	.35
7/13	.00	.37		2/9	1.06	1.32		10/2	.57	.79
7/16	1.97	2.21		2/10	.57	.33		10/3	1.27	1.27
7/17	1.97	1.69		2/11	.77	4.33		10/6	.27	3.57
7/18	2.26	1.16		2/12	.47	.14		10/7	2.37	.40
7/19	.90	.65		2/15	1.27	3.53		10/8	.67	.67
7/20	.96	1.09		2/16	.67	.67		10/9	.47	.34
7/23	.78	.48		2/17	.47	.28		10/10	.47	.33
7/24	.27	.03		2/18	.47	.25		10/13	.00	.27

Given the above information, calculate the cumulative abnormal return (CAR) for these stocks as a group. (A negative answer should be indicated by a minus sign. Leave no cells blank be certain to enter "0" wherever required. Do not round intermediate calculations and round your answers to 2 decimal places, e.g., 32.16.)