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:
| Station complex | Individual stations | Lines | Services | Notes |
| --- | --- | --- | --- | --- |
| 34th Street – Herald Square | 34th Street – Herald Square | BMT Broadway Line | N \n      Q \n      R | The BMT Broadway Line and IND Sixth Avenue Line, which lie on top of each other, received a transfer at the time of the July 1, 1948 fare increase. An existing connection was placed inside fare control. |
| 34th Street – Herald Square | 34th Street – Herald Square | IND Sixth Avenue Line | B \n      D \n      F \n      M | The BMT Broadway Line and IND Sixth Avenue Line, which lie on top of each other, received a transfer at the time of the July 1, 1948 fare increase. An existing connection was placed inside fare control. |
| Grand Central – 42nd Street | Grand Central | IRT 42nd Street Shuttle | S | The subway station at Grand Central Terminal serves the IRT Lexington Avenue Line, IRT Flushing Line, and IRT 42nd Street Shuttle. Connections are closely integrated, since all three lines were operated by the Interborough Rapid Transit Company. The original station, opened on October 27, 1904, served only the first IRT subway, and is now the shuttle platforms. The Flushing Line station opened on June 22, 1915, and the Lexington Avenue Line station on July 17, 1918, each with direct connections to the existing station.[citation needed] The elevated IRT Second Avenue Line was closed on June 13, 1942, and, starting the next day, a paper transfer was available between the elevated IRT Third Avenue Line and the Grand Central complex. This allowed passengers who had taken the Second Avenue Line over the Queensboro Bridge to instead use the Third Avenue Line to Lower Manhattan. The Third Avenue Line closed on May 12, 1955, ending this transfer. |
| Grand Central – 42nd Street | Grand Central | IRT Flushing Line | 7  <7> | The subway station at Grand Central Terminal serves the IRT Lexington Avenue Line, IRT Flushing Line, and IRT 42nd Street Shuttle. Connections are closely integrated, since all three lines were operated by the Interborough Rapid Transit Company. The original station, opened on October 27, 1904, served only the first IRT subway, and is now the shuttle platforms. The Flushing Line station opened on June 22, 1915, and the Lexington Avenue Line station on July 17, 1918, each with direct connections to the existing station.[citation needed] The elevated IRT Second Avenue Line was closed on June 13, 1942, and, starting the next day, a paper transfer was available between the elevated IRT Third Avenue Line and the Grand Central complex. This allowed passengers who had taken the Second Avenue Line over the Queensboro Bridge to instead use the Third Avenue Line to Lower Manhattan. The Third Avenue Line closed on May 12, 1955, ending this transfer. |
| Grand Central – 42nd Street | Grand Central – 42nd Street | IRT Lexington Avenue Line | 4 \n      5 \n      6  <6> | The subway station at Grand Central Terminal serves the IRT Lexington Avenue Line, IRT Flushing Line, and IRT 42nd Street Shuttle. Connections are closely integrated, since all three lines were operated by the Interborough Rapid Transit Company. The original station, opened on October 27, 1904, served only the first IRT subway, and is now the shuttle platforms. The Flushing Line station opened on June 22, 1915, and the Lexington Avenue Line station on July 17, 1918, each with direct connections to the existing station.[citation needed] The elevated IRT Second Avenue Line was closed on June 13, 1942, and, starting the next day, a paper transfer was available between the elevated IRT Third Avenue Line and the Grand Central complex. This allowed passengers who had taken the Second Avenue Line over the Queensboro Bridge to instead use the Third Avenue Line to Lower Manhattan. The Third Avenue Line closed on May 12, 1955, ending this transfer. |
| Grand Central – 42nd Street | 42nd Street | IRT Third Avenue Line | N/A | The subway station at Grand Central Terminal serves the IRT Lexington Avenue Line, IRT Flushing Line, and IRT 42nd Street Shuttle. Connections are closely integrated, since all three lines were operated by the Interborough Rapid Transit Company. The original station, opened on October 27, 1904, served only the first IRT subway, and is now the shuttle platforms. The Flushing Line station opened on June 22, 1915, and the Lexington Avenue Line station on July 17, 1918, each with direct connections to the existing station.[citation needed] The elevated IRT Second Avenue Line was closed on June 13, 1942, and, starting the next day, a paper transfer was available between the elevated IRT Third Avenue Line and the Grand Central complex. This allowed passengers who had taken the Second Avenue Line over the Queensboro Bridge to instead use the Third Avenue Line to Lower Manhattan. The Third Avenue Line closed on May 12, 1955, ending this transfer. |
| Times Square – 42nd Street / 42nd Street – Port Authority Bus Terminal | Times Square | IRT 42nd Street Shuttle | S | At Times Square, a number of passageways connect the IRT Broadway – Seventh Avenue Line, IRT Flushing Line, IRT 42nd Street Shuttle, and BMT Broadway Line. A block-long passageway west to the IND Eighth Avenue Line is also inside fare control. The first transfer here was between the original IRT subway (now the shuttle platforms) and the Broadway–Seventh Avenue Line, opened on June 3, 1917, when the latter line opened as a shuttle to 34th Street – Penn Station. The Flushing Line was extended to Times Square on March 14, 1927, and a passageway connecting the IRT and BMT was placed inside fare control on July 1, 1948. The same was done with the connection to the Eighth Avenue Line in December 1988. |
| Times Square – 42nd Street / 42nd Street – Port Authority Bus Terminal | Times Square – 42nd Street | BMT Broadway Line | N \n      Q \n      R | At Times Square, a number of passageways connect the IRT Broadway – Seventh Avenue Line, IRT Flushing Line, IRT 42nd Street Shuttle, and BMT Broadway Line. A block-long passageway west to the IND Eighth Avenue Line is also inside fare control. The first transfer here was between the original IRT subway (now the shuttle platforms) and the Broadway–Seventh Avenue Line, opened on June 3, 1917, when the latter line opened as a shuttle to 34th Street – Penn Station. The Flushing Line was extended to Times Square on March 14, 1927, and a passageway connecting the IRT and BMT was placed inside fare control on July 1, 1948. The same was done with the connection to the Eighth Avenue Line in December 1988. |
| Times Square – 42nd Street / 42nd Street – Port Authority Bus Terminal | Times Square – 42nd Street | IRT Broadway – Seventh Avenue Line | 1 \n      2 \n      3 | At Times Square, a number of passageways connect the IRT Broadway – Seventh Avenue Line, IRT Flushing Line, IRT 42nd Street Shuttle, and BMT Broadway Line. A block-long passageway west to the IND Eighth Avenue Line is also inside fare control. The first transfer here was between the original IRT subway (now the shuttle platforms) and the Broadway–Seventh Avenue Line, opened on June 3, 1917, when the latter line opened as a shuttle to 34th Street – Penn Station. The Flushing Line was extended to Times Square on March 14, 1927, and a passageway connecting the IRT and BMT was placed inside fare control on July 1, 1948. The same was done with the connection to the Eighth Avenue Line in December 1988. |
| Times Square – 42nd Street / 42nd Street – Port Authority Bus Terminal | Times Square | IRT Flushing Line | 7  <7> | At Times Square, a number of passageways connect the IRT Broadway – Seventh Avenue Line, IRT Flushing Line, IRT 42nd Street Shuttle, and BMT Broadway Line. A block-long passageway west to the IND Eighth Avenue Line is also inside fare control. The first transfer here was between the original IRT subway (now the shuttle platforms) and the Broadway–Seventh Avenue Line, opened on June 3, 1917, when the latter line opened as a shuttle to 34th Street – Penn Station. The Flushing Line was extended to Times Square on March 14, 1927, and a passageway connecting the IRT and BMT was placed inside fare control on July 1, 1948. The same was done with the connection to the Eighth Avenue Line in December 1988. |
| Times Square – 42nd Street / 42nd Street – Port Authority Bus Terminal | 42nd Street – Port Authority Bus Terminal | IND Eighth Avenue Line | A \n      C \n      E | At Times Square, a number of passageways connect the IRT Broadway – Seventh Avenue Line, IRT Flushing Line, IRT 42nd Street Shuttle, and BMT Broadway Line. A block-long passageway west to the IND Eighth Avenue Line is also inside fare control. The first transfer here was between the original IRT subway (now the shuttle platforms) and the Broadway–Seventh Avenue Line, opened on June 3, 1917, when the latter line opened as a shuttle to 34th Street – Penn Station. The Flushing Line was extended to Times Square on March 14, 1927, and a passageway connecting the IRT and BMT was placed inside fare control on July 1, 1948. The same was done with the connection to the Eighth Avenue Line in December 1988. |
| 42nd Street / Fifth Avenue – Bryant Park | 42nd Street – Bryant Park | IND Sixth Avenue Line | B \n      D \n      F \n      M | A paper transfer was added between the IND Sixth Avenue Line and IRT Flushing Line at Bryant Park on July 1, 1968, when KK service started and the new 57th Street station opened. The transfer was only valid on weekdays from 5:00 a.m. to 8:00 p.m. until a passageway was opened by 1971. |
| 42nd Street / Fifth Avenue – Bryant Park | Fifth Avenue | IRT Flushing Line | 7  <7> | A paper transfer was added between the IND Sixth Avenue Line and IRT Flushing Line at Bryant Park on July 1, 1968, when KK service started and the new 57th Street station opened. The transfer was only valid on weekdays from 5:00 a.m. to 8:00 p.m. until a passageway was opened by 1971. |
| 50th Street | upper level | IND Eighth Avenue Line | A \n      C | The station became a transfer station when the Queens Boulevard Line opened in 1933. There is no free connection between trains in opposite directions. A free transfer only exists between the northbound (uptown) services and another exists between the southbound (downtown) services. |
| 50th Street | lower level | IND Queens Boulevard Line | E | The station became a transfer station when the Queens Boulevard Line opened in 1933. There is no free connection between trains in opposite directions. A free transfer only exists between the northbound (uptown) services and another exists between the southbound (downtown) services. |
| Lexington Avenue / 51st – 53rd Streets | 51st Street | IRT Lexington Avenue Line | 4 \n      6  <6> | A passageway connects these two stations on the IRT Lexington Avenue Line and IND Queens Boulevard Line. The $13 million tunnel was paid for by Boston Properties, who was building an office tower on the southeast corner of Lexington Avenue and 53rd Street, in exchange for a zoning bonus of 20% more space, and opened in early November 1986. |
| Lexington Avenue / 51st – 53rd Streets | Lexington Avenue – 53rd Street | IND Queens Boulevard Line | E \n      M | A passageway connects these two stations on the IRT Lexington Avenue Line and IND Queens Boulevard Line. The $13 million tunnel was paid for by Boston Properties, who was building an office tower on the southeast corner of Lexington Avenue and 53rd Street, in exchange for a zoning bonus of 20% more space, and opened in early November 1986. |
| Seventh Avenue | cross-platform interchange on two levels | IND Sixth Avenue Line | B \n      D | The station became a transfer station when the Sixth Avenue Line opened in 1940. |
| Seventh Avenue | cross-platform interchange on two levels | IND Queens Boulevard Line | E | The station became a transfer station when the Sixth Avenue Line opened in 1940. |
| 59th Street – Columbus Circle | 59th Street – Columbus Circle | IRT Broadway – Seventh Avenue Line | 1 \n      2 | The IRT Broadway – Seventh Avenue Line and IND Eighth Avenue Line stations at Columbus Circle, which lie above each other, are connected by a passageway that was placed inside fare control on July 1, 1948. |
| 59th Street – Columbus Circle | 59th Street – Columbus Circle | IND Eighth Avenue Line | A \n      B \n      C \n      D | The IRT Broadway – Seventh Avenue Line and IND Eighth Avenue Line stations at Columbus Circle, which lie above each other, are connected by a passageway that was placed inside fare control on July 1, 1948. |
| Lexington Avenue / 59th–63rd Streets | 59th Street | IRT Lexington Avenue Line | 4 \n      5 \n      6  <6> | The passageways between the Broadway Line and the upper-level local Lexington Avenue Line stations were placed inside fare control on July 1, 1948. When the lower-level express Lexington Avenue platforms opened in 1962 to relieve congestion at the Grand Central – 42nd Street transfer point, those platforms were connected to the local platforms and Broadway Line platforms above. A MetroCard transfer to the IND 63rd Street Line was added on December 16, 2001, when the Queens section of that line was completed. Since the F had moved to the new line, there was no longer a direct transfer to the Lexington Avenue Line, and so this transfer was added with an above-ground walk, free for MetroCard users within two hours of the original boarding. |
| Lexington Avenue / 59th–63rd Streets | Lexington Avenue / 59th Street | BMT Broadway Line | N \n      Q \n      R | The passageways between the Broadway Line and the upper-level local Lexington Avenue Line stations were placed inside fare control on July 1, 1948. When the lower-level express Lexington Avenue platforms opened in 1962 to relieve congestion at the Grand Central – 42nd Street transfer point, those platforms were connected to the local platforms and Broadway Line platforms above. A MetroCard transfer to the IND 63rd Street Line was added on December 16, 2001, when the Queens section of that line was completed. Since the F had moved to the new line, there was no longer a direct transfer to the Lexington Avenue Line, and so this transfer was added with an above-ground walk, free for MetroCard users within two hours of the original boarding. |
| Lexington Avenue / 59th–63rd Streets | Lexington Avenue – 63rd Street | IND 63rd Street Line | F | The passageways between the Broadway Line and the upper-level local Lexington Avenue Line stations were placed inside fare control on July 1, 1948. When the lower-level express Lexington Avenue platforms opened in 1962 to relieve congestion at the Grand Central – 42nd Street transfer point, those platforms were connected to the local platforms and Broadway Line platforms above. A MetroCard transfer to the IND 63rd Street Line was added on December 16, 2001, when the Queens section of that line was completed. Since the F had moved to the new line, there was no longer a direct transfer to the Lexington Avenue Line, and so this transfer was added with an above-ground walk, free for MetroCard users within two hours of the original boarding. |
| 145th Street | upper level | IND Eighth Avenue Line | A \n      C | The station became a transfer station when the Concourse Line opened in 1933. |
| 145th Street | lower level | IND Concourse Line | B \n      D | The station became a transfer station when the Concourse Line opened in 1933. |
| 168th Street | 168th Street | IRT Broadway – Seventh Avenue Line | 1 | At the crossing of the IRT Broadway – Seventh Avenue Line and IND Eighth Avenue Line in Washington Heights, a passageway connects the two stations. It was placed inside fare control on July 1, 1948. |
| 168th Street | 168th Street | IND Eighth Avenue Line | A \n      C | At the crossing of the IRT Broadway – Seventh Avenue Line and IND Eighth Avenue Line in Washington Heights, a passageway connects the two stations. It was placed inside fare control on July 1, 1948. |
Question:
what was the number of services represented by yellow blocks?
Answer:
3