condition mean min max 4 h after light 6.93114 5.40077 8.46151 8 h after light 5.07562 4.95184 5.1994 12 h after light 6.105169999999999 5.27225 6.93809 4 h after dark 8.507639999999999 8.25813 8.75715 8 h after dark 9.544205 9.31226 9.77615 12 h after dark 10.317 10.1271 10.5069