condition mean min max 4 h after light 839.416756 720.182208 958.651304 8 h after light 830.2934025 825.364281 835.222524 12 h after light 780.3215204999999 697.989969 862.653072 4 h after dark 927.2158354999999 783.835637 1070.596034 8 h after dark 780.3975535 657.961875 902.833232 12 h after dark 818.340211 818.340211 818.340211