Except that the R and X columns are given in the reverse order from what we'd expect:
that's 16 +/- j30 rather than 30 +/- j16. (I made the same mistake when I first looked
at the numbers.)
16 +/- j30 is an SWR of about 4.3 : 1. While this doesn't match the reported 5.2 : 1,
it isn't quite as far off as it might appear othewise.
I checked a couple numbers from other bands and the error was of the same magnitude.
If you need a quick way to do this, you can use VK1OD's transmission line calculator:http://vk1od.net/calc/tl/tllc.php
Enter the load impedance as Zload (it doesn't allow spaces in the impedance string, so
use something like "16+j30"), choose a 50 ohm coax type and use a very short length,
such as .01 feet.