condition mean min max 4 h after light 2.743393333333333 2.633591 2.856991 8 h after light 2.0159063333333336 1.518435 2.367338 12 h after light 1.365648 1.296081 1.4521309999999998 16 h after light 2.7919573333333334 2.4359349999999997 3.288474 4 h after dark 2.2611923333333332 2.1454619999999998 2.492541 8 h after dark 1.524483 1.470412 1.557102