if ($minutes_in_unit) $this->minutes_in_unit = $minutes_in_unit;
$first_unit_threshold = $config->getIntValue('1st_unit_threshold');
if ($first_unit_threshold) $this->first_unit_threshold = $first_unit_threshold;
if ($minutes_in_unit) $this->minutes_in_unit = $minutes_in_unit;
$first_unit_threshold = $config->getIntValue('1st_unit_threshold');
if ($first_unit_threshold) $this->first_unit_threshold = $first_unit_threshold;