It depends on the scale you choose for your axes.
If the major grid lines are at single integers (1, 2, 3...) then 0.4 would be 4 tenths of the way from the origin to the No.1 grid-line.
If though you made every tenth grid-line = 1 then 0.4 would be the 4th grid-line.
4 divided by 10 is .04
The date 04-13-68 would be IV.XIII.LXVIII and 04-13-1968 would be IV.XIII.MCMLXVIII
The series of numbers 4.02.05 written as Roman numerals would be IV.II.V If they represent a date then the full date would be either 04-02-2005, which would be IV.II.MMV or if the date was 04-02-1905 it would be IV.II.MCMV
In Roman numerals, 12 04 2012 would be written as XII IV MMXII.
The date 17-04-2009 in Roman Numerals would be XVII.IV.MMIX
The Early Show - 1999 2008-04-04 was released on: USA: 4 April 2008
Attack of the Show - 2005 2011-04-04 was released on: USA: 4 April 2011
Attack of the Show - 2005 2008-04-04 was released on: USA: 4 April 2008
The Early Show - 1999 2011-04-04 was released on: USA: 4 April 2011
The Alyona Show - 2009 2011-04-04 was released on: USA: 4 April 2011
The Early Show - 1999 2006-04-04 was released on: USA: 4 April 2006
The Early Show - 1999 - 2011-04-04 was released on: USA: 4 April 2011
The Oprah Winfrey Show - 1986 2005-04-04 is rated/received certificates of: Australia:PG
The Oprah Winfrey Show - 1986 2005-04-04 was released on: USA: 4 April 2005
The Jerry Springer Show - 1991 2012-04-04 was released on: USA: 4 April 2012
The Wendy Williams Show - 2008 2012-04-04 was released on: USA: 4 April 2012
The Charlie Rose Show - 1991 2006-04-04 was released on: USA: 4 April 2006