condition mean min max 4 h after light 1.8897499999999998 1.81741 1.96209 8 h after light 1.771705 1.63874 1.90467 12 h after light 2.520265 2.31478 2.72575 4 h after dark 2.9899233333333335 2.38008 3.56732 8 h after dark 3.1964566666666667 2.4228 3.90031 12 h after dark 3.51233 2.99086 4.02796