U[mV],nu[Hz] 1350,1588 1260,1578 1070,1568 888,1558 728,1548 608,1538 512,1528 448,1518 392,1508 352,1498 1230,1598 1050,1608 864,1618 736,1628 648,1638 552,1648 496,1658 448,1668 400,1678 368,1688 336,1698