condition mean min max 4 h after light 10.3121325 9.55023 11.074035 8 h after light 9.733414499999999 9.628364 9.838465 12 h after light 9.838465 9.838465 9.838465 4 h after dark 9.4969125 9.15536 9.838465 8 h after dark 9.856653 9.838465 9.874841 12 h after dark 10.168649 10.168649 10.168649