std::vector< double > turbo_items;
	turbo_items.push_back(0.25);
	turbo_items.push_back(0.5);
	turbo_items.push_back(0.75);
	turbo_items.push_back(1);
	turbo_items.push_back(1.25);
	turbo_items.push_back(1.5);
	turbo_items.push_back(1.75);
	turbo_items.push_back(2);
	turbo_items.push_back(3);
	turbo_items.push_back(4);
	turbo_items.push_back(8);
	turbo_items.push_back(16);