lbs: A vector of the lower bounds for each value in the support of the outcome
ubs: A vector of the upper bounds for each value in the support of the outcome
ub.quantiles: A vector of the same length as probs that contains the upper bound of the quantiles of the counterfactual distribution of untreated potential outcomes for the treated group
lb.quantiles: A vector of the same length as probs that contains the lower bound of the quantiles of the counterfactual distribution of untreated potential outcomes for the treated group
ub.qte: The point estimate of the upper bound for the QTE
lb.qte: The point estimate of the lower bound for the QTE
att: The ATT is point identified under the assumptions required by the bounds method
probs: A vector of values between 0 and 1 to compute the QTET at