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:
| No. in series | No. in season | Title | Directed by | Written by | Original air date |
| --- | --- | --- | --- | --- | --- |
| 62.0 | 1.0 | "Gypsy Eyes (Part 2)" | Tony Wharmby | Donald P. Bellisario | September 22, 1998 |
| 63.0 | 2.0 | "Embassy" | Alan J. Levi | R. Scott Gemmill | September 29, 1998 |
| 64.0 | 3.0 | "Innocence" | Tony Wharmby | Dana Coen | October 6, 1998 |
| 65.0 | 4.0 | "Going After Francesca" | Alan J. Levi | Stephen Zito | October 13, 1998 |
| 66.0 | 5.0 | "The Martin Baker Fan Club" | Tony Wharmby | Dana Coen | October 20, 1998 |
| 67.0 | 6.0 | "Act of Terror" | Alan J. Levi | Larry Moskowitz | October 27, 1998 |
| 68.0 | 7.0 | "Angels 30" | Tony Wharmby | R. Scott Gemmill | November 3, 1998 |
| 69.0 | 8.0 | "Mr. Rabb Goes to Washington" | Jeannot Szwarc | Stephen Zito | November 10, 1998 |
| 70.0 | 9.0 | "People v. Mac" | Tony Wharmby | Larry Moskowitz | November 17, 1998 |
| 71.0 | 10.0 | "The Black Jet" | Jeannot Szwarc | David Zabel | November 24, 1998 |
| 72.0 | 11.0 | "Jaggle Bells" | Greg Beeman | R. Scott Gemmill | December 15, 1998 |
| 73.0 | 12.0 | "Dungaree Justice" | Hugo Cortina | David Zabel | January 12, 1999 |
| 74.0 | 13.0 | "War Stories" | Greg Beeman | Dana Coen | January 13, 1999 |
| 75.0 | 14.0 | "Webb of Lies" | Mark Horowitz | R. Scott Gemmill | February 9, 1999 |
| 76.0 | 15.0 | "Rivers' Run" | Greg Beeman | Larry Moskowitz | February 16, 1999 |
| 77.0 | 16.0 | "Silent Service" | Alan J. Levi | Dana Coen & Julie B. Watson | February 23, 1999 |
| 78.0 | 17.0 | "Nobody's Child" | Tony Wharmby | Stephen Zito | March 2, 1999 |
| 79.0 | 18.0 | "Shakedown" | Tony Wharmby | R. Scott Gemmill | March 30, 1999 |
| 80.0 | 19.0 | "The Adversaries" | Tony Wharmby | Larry Moskowitz | April 13, 1999 |
| 81.0 | 20.0 | "Second Sight" | Terrence O'Hara | Dana Coen | April 27, 1999 |
| 82.0 | 21.0 | "Wilderness of Mirrors" | Alan J. Levi | Paul Levine | May 4, 1999 |
| 83.0 | 22.0 | "Soul Searching" | Jeannot Szwarc | Donald P. Bellisario | May 11, 1999 |
| 84.0 | 23.0 | "Yeah, Baby" | Alan J. Levi | R. Scott Gemmill | May 18, 1999 |
Question:
What episode number in the series originally aired on April 27, 1999?
Answer:
81.0