preg_match("/Dato: ([0-9]+)\\.([0-9]+)\\.([0-9]+)/", $titTag[0]->plaintext, $m);
$date = sprintf("%s-%s-%s", $m[3], $m[2], $m[1]);
$areas = array("indre_oslofjord" => array(103, 400, 135, 430), "ytre_oslofjord" => array(103, 420, 135, 444), "gulen" => array(17, 373, 41, 397), "trondheimsfjorden" => array(68, 279, 105, 312), "troms" => array(90, 62, 148, 116), "lofoten_vesterålen" => array(57, 106, 117, 182));
$data = array('date' => $date);
foreach ($areas as $name => $area) {
$good = 0;
$bad = 0;
for ($y = $area[1]; $y <= $area[3]; $y++) {
for ($x = $area[0]; $x <= $area[2]; $x++) {
$rgb = imagecolorat($img, $x, $y);
$r = $rgb >> 16 & 0xff;
$g = $rgb >> 8 & 0xff;
$b = $rgb & 0xff;
if ($r > 250 && $g > 240 && $b > 240) {
$good++;
} else {
if ($r > 150 && $r < 175 && $g > 50 && $g < 80 && $b > 70 && $b < 90) {
$bad++;
}
}
}
}
if ($good > 4 || $bad > 4) {
$visibility = round($good * (10 / ($good + $bad + 1)));
} else {
$visibility = 'null';
}
$data[$name] = $visibility;
}
ScraperWiki::save(array('date'), $data);
