Parameter definitions and values.

†The cost of local firewood was determined by personal communication with Ontario Parks.‡The cost of transporting firewood was determined by observation of costs of firewood available for private sale.

† 当地木柴的成本通过与安大略省公园管理局（Ontario Parks）的个人沟通确定。
‡ 木柴的运输成本通过对可供私人售卖的木柴售价的观察确定。