#
# Frequency of Cluster 1521970 Over Time: another captain, traveling off duty, entered the flight deck prior to landing at amarillo, and took over the duties of the ill crew member once on the ground (Wed Aug 22 18:46:39 2012)
#
# Hour Offset From Present Time	Frequency	Hour Offset From Present Time	Peaks
-336	0	-6	234
-334	0
-332	0
-330	0
-328	0
-326	0
-324	0
-322	0
-320	0
-318	0
-316	0
-314	0
-312	0
-310	0
-308	0
-306	0
-304	0
-302	0
-300	0
-298	0
-296	0
-294	0
-292	0
-290	0
-288	0
-286	0
-284	0
-282	0
-280	0
-278	0
-276	0
-274	0
-272	0
-270	0
-268	0
-266	0
-264	0
-262	0
-260	0
-258	0
-256	0
-254	0
-252	0
-250	0
-248	0
-246	0
-244	0
-242	0
-240	0
-238	0
-236	0
-234	0
-232	0
-230	0
-228	0
-226	0
-224	0
-222	0
-220	0
-218	0
-216	0
-214	0
-212	0
-210	0
-208	0
-206	0
-204	0
-202	0
-200	0
-198	0
-196	0
-194	0
-192	0
-190	0
-188	0
-186	0
-184	0
-182	0
-180	0
-178	0
-176	0
-174	0
-172	0
-170	0
-168	0
-166	0
-164	0
-162	0
-160	0
-158	0
-156	0
-154	0
-152	0
-150	0
-148	0
-146	0
-144	0
-142	0
-140	0
-138	0
-136	0
-134	0
-132	0
-130	0
-128	0
-126	0
-124	0
-122	0
-120	0
-118	0
-116	0
-114	0
-112	0
-110	0
-108	0
-106	0
-104	0
-102	0
-100	0
-98	0
-96	0
-94	0
-92	0
-90	0
-88	0
-86	0
-84	0
-82	0
-80	0
-78	0
-76	0
-74	0
-72	0
-70	0
-68	0
-66	0
-64	0
-62	0
-60	0
-58	0
-56	0
-54	0
-52	0
-50	0
-48	0
-46	0
-44	0
-42	0
-40	0
-38	0
-36	0
-34	0
-32	0
-30	0
-28	0
-26	0
-24	0
-22	0
-20	0
-18	0
-16	3
-14	1
-12	1
-10	0
-8	8
-6	234
-4	210
-2	65