condition mean min max 2 h after light 1.288016 0.968726 1.67204 6 h after light 0.9746763333333334 0.705856 1.36871 10 h after light 1.339299 0.992354 1.83547 14 h after light 1.2306556666666666 0.327021 2.04246 18 h after light 2.20474 1.0174 4.04423 2 h after dark 1.4021109999999999 0.744326 2.50656