condition mean min max 4 h after light 10.3641005 9.879634 10.848567 8 h after light 12.3243005 12.242467 12.406134 12 h after light 11.251634 10.751147 11.752121 4 h after dark 11.882817500000002 11.074471 12.691164 8 h after dark 9.6629365 9.298958 10.026915 12 h after dark 10.603583 10.603583 10.603583