condition mean min max 4 h after light 3.439815 2.51567 4.36396 8 h after light 1.825605 1.78281 1.8684 12 h after light 1.254245 1.03547 1.47302 4 h after dark 2.0986873333333333 0.642762 3.36546 8 h after dark 4.38045 3.79058 5.10176 12 h after dark 4.46143 3.21368 6.25393