condition mean min max 4 h after light 1083.796108 1046.155134 1121.437082 8 h after light 987.4334860000001 864.481069 1110.385903 12 h after light 1067.6078575000001 1046.155134 1089.060581 4 h after dark 948.970046 867.883652 1030.05644 8 h after dark 735.986666 466.501801 1005.471531 12 h after dark 1071.004088 1071.004088 1071.004088