condition mean min max 2 h after light 1.1931465 0.822699 1.53269 6 h after light 1.1074705 0.833387 1.54766 10 h after light 1.0834275 0.50385 1.8417 14 h after light 1.3217168333333333 0.825623 1.85022 18 h after light 1.6576511666666667 0.823913 2.30209 2 h after dark 0.9576034999999999 0.511821 1.22077