condition mean min max 2 h after light 3.515676666666667 3.04664 3.93393 6 h after light 4.1476 3.82589 4.33837 10 h after light 3.94545 3.53961 4.44507 2 h after dark 8.036183333333334 7.8576 8.36407 6 h after dark 8.135656666666668 7.99901 8.25609 10 h after dark 7.45671 6.72329 8.35568