lithium\analysis\logger\adapter\FirePhp::$_levels
This is a mapping table that maps Lithium log levels to FirePHP log levels as they do not correlate directly and FirePHP only accepts a distinct set.
Source
protected $_levels = [
'emergency' => 'ERROR',
'alert' => 'ERROR',
'critical' => 'ERROR',
'error' => 'ERROR',
'warning' => 'WARN',
'notice' => 'INFO',
'info' => 'INFO',
'debug' => 'LOG'
];