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	.41	.61	2/8	.90	1.20	10/1	.61	.41
7/13	.00	.31	2/9	1.00	1.20	10/2	.51	.81
7/16	1.09	1.36	2/10	.51	.24	10/3	1.21	1.21
7/17	1.09	.93	2/11	.71	3.16	10/6	.21	2.40
7/18	2.20	1.10	2/12	.41	.20	10/7	2.31	.41
7/19	.95	.55	2/15	1.21	2.66	10/8	.61	.61
7/20	1.00	1.22	2/16	.61	.61	10/9	.41	.19
7/23	.72	.31	2/17	.41	.23	10/10	.41	.26
7/24	.21	.02	2/18	.41	.31	10/13	.00	.21

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.