Monarch Migration and Longitude
Challenge Question #5
The 30 sightings below were reported from Texas and Oklahoma between October 5-9, 1998. Use these data to answer Challenge Question #5: "At what longitude do the 30 sightings seem to be concentrated in Texas and Oklahoma? (Younger students should round off to the nearest degree longitude, 95W, 96W, etc. and count the number of sightings reported from each degree longitude). What do these sightings suggest about monarch migration through this region?"

Date	Town	St/Pr	Lat (N)	Long (W)
10/05/98	Midland	TX	31.99	-102.08
10/07/98	Dumas	TX	35.81	-101.95
10/05/98	Sunray	TX	35.92	-101.73
10/07/98	Stinnett	TX	35.91	-101.39
10/06/98	Menard	TX	30.89	-99.83
10/05/98	Abilene	TX	32.48	-99.68
10/08/98	Wichita Falls	TX	33.95	-98.46
10/08/98	Buda	TX	30.07	-97.90
10/06/98	Enid	OK	36.39	-97.82
10/07/98	Austin	TX	30.23	-97.71
10/06/98	Georgetown	TX	30.62	-97.66
10/07/98	Edmond	OK	35.68	-97.58
10/07/98	Azle	TX	32.90	-97.55
10/06/98	Oklahoma City	OK	35.43	-97.52
10/07/98	Guthrie	OK	35.84	-97.48
10/07/98	Norman	OK	35.25	-97.46
10/08/98	Fort Worth	TX	32.74	-97.38
10/06/98	Perry	OK	36.29	-97.29
10/06/98	Ft.Worth	TX	32.86	-97.29
10/06/98	Edmond	OK	35.39	-97.28
10/08/98	Rogers	TX	30.97	-97.22
10/07/98	Richland Hills	TX	32.80	-97.19
10/08/98	Denton	TX	33.23	-97.13
10/06/98	Grapevine	TX	32.93	-97.07
10/07/98	Grapevine	TX	32.93	-97.07
10/06/98	Dallas	TX	32.79	-96.80
10/07/98	Richardson	TX	32.97	-96.74
10/08/98	Campbell	TX	33.15	-95.93
10/07/98	Kingwood	TX	29.76	-95.37
10/07/98	Houston	TX	29.76	-95.37

Copyright 1998 Journey North. All Rights Reserved.
Please send all questions, comments, and suggestions to our feedback form