PhpSpreadsheet/tests/data/Calculation/Financial/TBILLYIELD.php

<?php

return [
    [
        0.09141696292534264,
        '31-Mar-2008', '1-Jun-2008', 98.45,
    ],
    [
        0.024405125076266018,
        '1-Feb-2017', '30-Jun-2017', 99,
    ],
];