Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Episode # | Title | Directed by | Written by | Original airdate |
| --- | --- | --- | --- | --- |
| 23 (1) | "Hard Landing" | Jon Cassar | Michael Loceff | January 4, 1998 |
| 24 (2) | "Spec Ops" | T.J. Scott | Robert Cochran | January 11, 1998 |
| 25 (3) | "Third Person" | Jon Cassar | Michael Loceff | January 18, 1998 |
| 26 (4) | "Approaching Zero" | René Bonnière | Michael Loceff | February 1, 1998 |
| 27 (5) | "New Regime" | Jon Cassar | Robert Cochran | March 1, 1998 |
| 28 (6) | "Mandatory Refusal" | Ken Girotti | David Ehrman | March 8, 1998 |
| 29 (7) | "Half-Life" | René Bonnière | Maurice Hurley | March 22, 1998 |
| 30 (8) | "Darkness Visible" | Ken Girotti | David Ehrman | March 29, 1998 |
| 31 (9) | "Open Heart" | René Bonnière | Elliot Stern | April 5, 1998 |
| 32 (10) | "First Mission" | Guy Magar | Peter Mohan & Jim Henshaw | April 12, 1998 |
| 33 (11) | "Psychic Pilgrim" | René Bonnière | Michael Loceff | April 19, 1998 |
| 34 (12) | "Soul Sacrifice" | David Warry-Smith | Michael Loceff | June 14, 1998 |
| 35 (13) | "Not Was" | René Bonnière | Michael Loceff | June 21, 1998 |
| 36 (14) | "Double Date" | Jon Cassar | Robert Cochran | June 28, 1998 |
| 37 (15) | "Fuzzy Logic" | Ken Girotti | Michael Loceff | July 5, 1998 |
| 38 (16) | "Old Habits" | Terry Ingram | Maurice Hurley | July 12, 1998 |
| 39 (17) | "Inside Out" | Ken Girotti | Maurice Hurley | July 26, 1998 |
| 40 (18) | "Off Profile" | John Fawcett | David Ehrman | August 2, 1998 |
| 41 (19) | "Last Night" | Clark Johnson | Robert Cochran | August 9, 1998 |
| 42 (20) | "In Between" | Joseph Scanlan | Michael Loceff | August 16, 1998 |
| 43 (21) | "Adrian's Garden" | Brad Turner | Michael Loceff | August 23, 1998 |
| 44 (22) | "End Game" | Joseph Scanlan | Robert Cochran & David Ehrman | August 30, 1998 |
Question:
What is the episode # of the episode that aired on April 5, 1998?
Answer:
31 (9)