vnstat2-php-frontend/lang/es.php

<?php

// sidebar labels
$L['summary'] = 'sumario';
$L['hours'] = 'horas';
$L['days'] = 'días';
$L['months'] = 'meses';

// main table headers
$L['Summary'] = 'Sumario';
$L['Top 10 days'] = 'Últimos 10 días';
$L['Last 24 hours'] = 'Últimas 24 horas';
$L['Last 30 days'] = 'Últimos 30 días';
$L['Last 12 months'] = 'Últimos 12 meses';

// traffic table columns
$L['In'] = 'Entrada';
$L['Out'] = 'Salida';
$L['Total'] = 'Total';

// summary rows
$L['This hour'] = 'Esta hora';
$L['This day'] = 'Este día';
$L['This month'] = 'Este mes';
$L['All time'] = 'Todo el tiempo';

// graph text
$L['Traffic data for'] = 'Trafico de datos para';
$L['bytes in'] = 'entrada de bytes';
$L['bytes out'] = 'salida de bytes';

// date formats
$L['datefmt_days'] = '%d %B';
$L['datefmt_days_img'] = '%d';
$L['datefmt_months'] = '%B %Y';
$L['datefmt_months_img'] = '%b';
$L['datefmt_hours'] = '%H:%M';
$L['datefmt_hours_img'] = '%H';
$L['datefmt_top'] = '%d %B %Y';

// spanish version by Carlos Troetsch