condition mean min max 4 h after light 205.179775 176.317461 234.042089 8 h after light 223.59355 201.377222 245.809878 12 h after light 195.266669 172.070512 218.462826 4 h after dark 210.45283899999998 202.255724 218.649954 8 h after dark 241.473549 233.407349 249.539749 12 h after dark 223.735924 223.735924 223.735924