condition mean min max 4 h after light 5.73117 5.56024 5.8252 8 h after light 5.890916666666667 5.83402 5.972180000000001 12 h after light 5.773576666666667 5.5894900000000005 5.9619 4 h after dark 5.88814 5.66375 6.1981 8 h after dark 5.88933 5.6272 6.17105 12 h after dark 6.099986666666666 5.9457699999999996 6.229769999999999