Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
SR Q class
Table title:
Locomotive summary
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > SR No. </th><th colspan=1 rowspan=1 > BR No. </th><th colspan=1 rowspan=1 > Date Built </th><th colspan=1 rowspan=1 > Date Withdrawn </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 530 </td><td colspan=1 rowspan=1 > 30530 </td><td colspan=1 rowspan=1 > January 1938 </td><td colspan=1 rowspan=1 > December 1964 </td></tr>
<tr> <td colspan=1 rowspan=1 > 531 </td><td colspan=1 rowspan=1 > 30531 </td><td colspan=1 rowspan=1 > June 1938 </td><td colspan=1 rowspan=1 > July 1964 </td></tr>
<tr> <td colspan=1 rowspan=1 > 532 </td><td colspan=1 rowspan=1 > 30532 </td><td colspan=1 rowspan=1 > June 1938 </td><td colspan=1 rowspan=1 > January 1964 </td></tr>
<tr> <td colspan=1 rowspan=1 > 533 </td><td colspan=1 rowspan=1 > 30533 </td><td colspan=1 rowspan=1 > July 1938 </td><td colspan=1 rowspan=1 > March 1963 </td></tr>
<tr> <td colspan=1 rowspan=1 > 534 </td><td colspan=1 rowspan=1 > 30534 </td><td colspan=1 rowspan=1 > August 1938 </td><td colspan=1 rowspan=1 > December 1962 </td></tr>
<tr> <td colspan=1 rowspan=1 > 535 </td><td colspan=1 rowspan=1 > 30535 </td><td colspan=1 rowspan=1 > September 1938 </td><td colspan=1 rowspan=1 > April 1965 </td></tr>
<tr> <td colspan=1 rowspan=1 > 536 </td><td colspan=1 rowspan=1 > 30536 </td><td colspan=1 rowspan=1 > October 1938 </td><td colspan=1 rowspan=1 > January 1964 </td></tr>
<tr> <td colspan=1 rowspan=1 > 537 </td><td colspan=1 rowspan=1 > 30537 </td><td colspan=1 rowspan=1 > October 1938 </td><td colspan=1 rowspan=1 > December 1962 </td></tr>
<tr> <td colspan=1 rowspan=1 > 538 </td><td colspan=1 rowspan=1 > 30538 </td><td colspan=1 rowspan=1 > November 1938 </td><td colspan=1 rowspan=1 > July 1963 </td></tr>
<tr> <td colspan=1 rowspan=1 > 539 </td><td colspan=1 rowspan=1 > 30539 </td><td colspan=1 rowspan=1 > December 1938 </td><td colspan=1 rowspan=1 > January 1963 </td></tr>
<tr> <td colspan=1 rowspan=1 > 540 </td><td colspan=1 rowspan=1 > 30540 </td><td colspan=1 rowspan=1 > December 1938 </td><td colspan=1 rowspan=1 > November 1962 </td></tr>
<tr> <td colspan=1 rowspan=1 > 541 </td><td colspan=1 rowspan=1 > 30541 </td><td colspan=1 rowspan=1 > January 1939 </td><td colspan=1 rowspan=1 > November 1964 </td></tr>
<tr> <td colspan=1 rowspan=1 > 542 </td><td colspan=1 rowspan=1 > 30542 </td><td colspan=1 rowspan=1 > February 1939 </td><td colspan=1 rowspan=1 > December 1964 </td></tr>
<tr> <td colspan=1 rowspan=1 > 543 </td><td colspan=1 rowspan=1 > 30543 </td><td colspan=1 rowspan=1 > March 1939 </td><td colspan=1 rowspan=1 > December 1964 </td></tr>
<tr> <td colspan=1 rowspan=1 > 544 </td><td colspan=1 rowspan=1 > 30544 </td><td colspan=1 rowspan=1 > April 1939 </td><td colspan=1 rowspan=1 > January 1964 </td></tr>
<tr> <td colspan=1 rowspan=1 > 545 </td><td colspan=1 rowspan=1 > 30545 </td><td colspan=1 rowspan=1 > June 1939 </td><td colspan=1 rowspan=1 > May 1965 </td></tr>
<tr> <td colspan=1 rowspan=1 > 546 </td><td colspan=1 rowspan=1 > 30546 </td><td colspan=1 rowspan=1 > June 1939 </td><td colspan=1 rowspan=1 > May 1964 </td></tr>
<tr> <td colspan=1 rowspan=1 > 547 </td><td colspan=1 rowspan=1 > 30547 </td><td colspan=1 rowspan=1 > July 1939 </td><td colspan=1 rowspan=1 > January 1964 </td></tr>
<tr> <td colspan=1 rowspan=1 > 548 </td><td colspan=1 rowspan=1 > 30548 </td><td colspan=1 rowspan=1 > August 1939 </td><td colspan=1 rowspan=1 > March 1965 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 549 </td><td colspan=1 rowspan=1 > 30549 </td><td colspan=1 rowspan=1 > September 1939 </td><td colspan=1 rowspan=1 > July 1963 </td></tr>
</table>
Question:
What is the number range of the locomotives in the Southern Railway?
Answer:
The numbering of the locomotives under the Southern Railway ranged from 530–549.