condition mean min max 4 h after light 8345.228333333333 7154.036667 10368.895 8 h after light 8084.6855553333335 5392.273333 9920.89 12 h after light 11487.051113333333 8436.54 14661.58667 1.5 h after dark 12905.374443333334 10544.99 15048.45 5.5 h after dark 10485.243332333333 8934.876667 11470.81333 9.5 h after dark 7805.237778 6458.676667 8644.496667