condition mean min max 0 h after light 2.039575 2.00682 2.07233 4 h after light 2.31575 2.11155 2.51995 8 h after light 2.80635 2.74235 2.87035 4 h after dark 3.364795 3.33744 3.39215 8 h after dark 3.656385 3.33361 3.97916 12 h after dark 2.2487000000000004 2.00056 2.49684