15 November 2022

• curprev 19:5419:54, 15 November 2022‎ imported>Doug Williamson‎ 511 bytes +40‎ Add link.

27 June 2022

• curprev 20:3720:37, 27 June 2022‎ imported>Doug Williamson‎ 471 bytes +79‎ Classify page.

15 January 2016

• curprev 20:3720:37, 15 January 2016‎ imported>Doug Williamson‎ 392 bytes +2‎ Improve calculation.

21 March 2015

• curprev 12:0412:04, 21 March 2015‎ imported>Doug Williamson‎ 390 bytes −2‎ Standardise appearance of page

15 March 2015

• curprev 13:1513:15, 15 March 2015‎ imported>Doug Williamson‎ 392 bytes +3‎ Standardise appearance of page.

14 March 2015

• curprev 15:2815:28, 14 March 2015‎ imported>Doug Williamson‎ 389 bytes +8‎ Align presentation of formula with qualification material

20 September 2014

• curprev 15:1015:10, 20 September 2014‎ imported>Doug Williamson‎ m 381 bytes +4‎ Added more space so that calculations are clearer

4 August 2013

• curprev 22:0622:06, 4 August 2013‎ imported>Doug Williamson‎ m 377 bytes −2‎ Spacing

23 October 2012

• curprev 14:1914:19, 23 October 2012‎ imported>Administrator‎ 379 bytes +379‎ CSV import