The resulting distribution of economically optimal temperatures in 2100 inherits the properties of the ECS probability distribution. As the main text also shows, higher levels of ECS imply a higher temperature target due to the limited room for manoeuvre to achieve lower temperatures through climate policy. In addition, the more detailed sensitivity analysis confirms that the most likely temperature targets are 2°C. However, there is some chance, although very small, that the economically optimal temperature target will be significantly higher, perhaps up to 4°C. However, the probability of achieving these high targets decreases considerably for all ETUC values above 4°C. As a result, the tail probabilities of high ECS values are reflected in the optimal temperature distribution in 2100. .