condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0237998 0.0 0.0475996 4 h after dark 0.0412057 0.0 0.0671893 8 h after dark 0.0 0.0 0.0 12 h after dark 0.06394373333333334 0.0 0.164006