condition mean min max 0 h after light 6.02295 0.0 12.0459 4 h after light 24.1074 23.7108 24.504 8 h after light 6.12005 0.0 12.2401 4 h after dark 23.64235 11.8562 35.4285 8 h after dark 5.92125 0.0 11.8425 12 h after dark 23.49335 0.0 46.9867