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	.44	.67	2/8	.93	1.26	10/1	.64	.38
7/13	.00	.34	2/9	1.03	1.26	10/2	.54	.73
7/16	1.55	1.73	2/10	.54	.36	10/3	1.24	1.24
7/17	1.55	1.33	2/11	.74	3.73	10/6	.24	2.97
7/18	2.23	1.13	2/12	.44	.17	10/7	2.34	.43
7/19	.87	.68	2/15	1.24	3.05	10/8	.64	.64
7/20	.93	1.18	2/16	.64	.64	10/9	.44	.19
7/23	.75	.51	2/17	.44	.31	10/10	.44	.23
7/24	.24	.06	2/18	.44	.28	10/13	.00	.24

Given the above information, calculate the cumulative abnormal return (CAR) for these stocks as a group. All of the stocks have a beta of 1 and no other announcements are made. (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.)