condition mean min max 4 h after light 1003.3275 993.735 1012.92 8 h after light 841.6555000000001 833.519 849.792 12 h after light 1156.03 1127.96 1184.1 4 h after dark 1394.6799999999998 1366.75 1422.61 8 h after dark 1266.5700000000002 1264.23 1268.91 12 h after dark 1218.095 1168.16 1268.03