condition mean min max 4 h after light 9.84568 9.654910000000001 10.027989999999999 8 h after light 9.76783 9.66186 9.860330000000001 12 h after light 9.789036666666666 9.68277 9.88503 4 h after dark 9.89161 9.788030000000001 9.98892 8 h after dark 9.874853333333334 9.68003 9.99721 12 h after dark 9.864320000000001 9.774510000000001 10.01949