name                   street address years as tallest height ft / m floors
0   trinity episcopal cathedral                 328 sixth avenue      1872 - 1888      200 / 61  n / a
1   allegheny county courthouse                 436 grant street      1888 - 1902      249 / 76      5
2         farmers bank building                 301 fifth avenue      1902 - 1910     344 / 105     27
3               oliver building            535 smithfield street      1910 - 1912     347 / 106     25
4  first national bank building  511 wood street at fifth avenue      1912 - 1928     387 / 118     26
5                grant building                 330 grant street      1928 - 1932     485 / 148     40
6                 gulf building                 707 grant street      1932 - 1970     582 / 177     44
7                us steel tower                 600 grant street   1970 - present     841 / 256     64

Table as JSON:
{"name":{"0":"trinity episcopal cathedral","1":"allegheny county courthouse","2":"farmers bank building","3":"oliver building","4":"first national bank building","5":"grant building","6":"gulf building","7":"us steel tower"},"street address":{"0":"328 sixth avenue","1":"436 grant street","2":"301 fifth avenue","3":"535 smithfield street","4":"511 wood street at fifth avenue","5":"330 grant street","6":"707 grant street","7":"600 grant street"},"years as tallest":{"0":"1872 - 1888","1":"1888 - 1902","2":"1902 - 1910","3":"1910 - 1912","4":"1912 - 1928","5":"1928 - 1932","6":"1932 - 1970","7":"1970 - present"},"height ft \/ m":{"0":"200 \/ 61","1":"249 \/ 76","2":"344 \/ 105","3":"347 \/ 106","4":"387 \/ 118","5":"485 \/ 148","6":"582 \/ 177","7":"841 \/ 256"},"floors":{"0":"n \/ a","1":"5","2":"27","3":"25","4":"26","5":"40","6":"44","7":"64"}}