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 |
| --- | --- | --- | --- | --- | --- |
| 145.0 | 1.0 | "It Was a Dark and Stormy Night" | John Tracy | Marc Warren & Dennis Rinsler | September14,1993 |
| 146.0 | 2.0 | "The Apartment" | John Tracy | Tom Burkhard | September21,1993 |
| 147.0 | 3.0 | "Wrong-Way Tanner" | John Tracy | Jamie Tatham & Chuck Tatham | September28,1993 |
| 148.0 | 4.0 | "Tough Love" | Joel Zwick | Ellen Guylas | October5,1993 |
| 149.0 | 5.0 | "Fast Friends" | John Tracy | Bob Sand | October12,1993 |
| 150.0 | 6.0 | "Smash Club: The Next Generation" | John Tracy | Carolyn Omine | October19,1993 |
| 151.0 | 7.0 | "High Anxiety" | John Tracy | Tom Amundsen | October26,1993 |
| 152.0 | 8.0 | "Another Opening, Another No Show" | Joel Zwick | Story by: Elias Davis Teleplay by: Tom Burkhard | November2,1993 |
| 153.0 | 9.0 | "The Day of the Rhino" | James O'Keefe | Adam I. Lapidus | November9,1993 |
| 154.0 | 10.0 | "The Prying Game" | John Tracy | Ellen Guylas | November16,1993 |
| 155.0 | 11.0 | "The Bicycle Thief" | John Tracy | Chuck Tatham & Jamie Tatham | November23,1993 |
| 156.0 | 12.0 | "Support Your Local Parents" | James O'Keefe | Bob Sand | November30,1993 |
| 157.0 | 13.0 | "The Perfect Couple" | John Tracy | Marc Warren & Dennis Rinsler | December14,1993 |
| 158.0 | 14.0 | "Is It True About Stephanie?" | Joel Zwick | Carolyn Omine | January4,1994 |
| 159.0 | 15.0 | "The Test" | John Tracy | Dan Chasin & Linda Lane | January11,1994 |
| 160.0 | 16.0 | "Joey's Funny Valentine" | John Tracy | Adam I. Lapidus | January25,1994 |
| 161.0 | 17.0 | "The Last Dance" | John Tracy | Tom Amundsen | February8,1994 |
| 162.0 | 18.0 | "Kissing Cousins" | John Tracy | Tom Burkhard | February15,1994 |
| 163.0 | 19.0 | "Love on the Rocks" | Tom Rickard | Ellen Guylas | March1,1994 |
Question:
What episode number in the series is "tough love"?
Answer:
148.0