Dirt....without beating around the bush cuz i don't feel like typing today, and at the sake of sounding rude which i apologize for in advance, your model is one of the stupidest things i have ever seen. you absolutely CANNOT count deer by shed antlers. IMPOSSIBLE. You may have an area that the deer winter in that is 5 acres in size and loaded with sheds that doesn't have a deer in it from april til december. on the flip, you may not find a single horn in an area that is loaded with deer in those times mentioned. deer travel GREAT distances is some circumstances to winter, and in almost every circumstance, they do not winter where they live the majority of the year. also....many many sheds are under water never to be found period...MANY. It's nice that your trying to figure things out, but the variables involved in this problem fluctuate far to much to even come up with a theory.