Costs data used to estimate potential earnings from trophy hunting.

aIn most countries, lease length is largely consistent among blocks, but in Mozambique, due to high variability in this measure, mean lease length ± SE reported by operators was used.bWe assumed (using data from the surveys) that 61±19.1% (mean ± SD) of running costs were fixed, and the remainder were variable.cDue to a small sample size, we used the Tanzanian mean value for start up and operating costs in Zambia, but used the minimum and maximum values from Zambia.a. 在多数国家，各区块的租赁期限大体一致；但在莫桑比克，由于该指标的变异程度较高，研究采用了运营商报告的平均租赁期限±标准误（Standard Error, SE）。b. 本研究基于调研数据假设：运营成本中61±19.1%（均值±标准差（Standard Deviation, SD））为固定成本，剩余部分为可变成本。c. 由于样本量较小，赞比亚的启动与运营成本采用了坦桑尼亚的均值，但使用了赞比亚自身的最小值与最大值。