prr class builders model   build date  total produced wheel arrangement   service  power output
0       gs4         44 ton  1948 - 1950              46             b - b  switcher           NaN
1      gf25           u25b         1965              59             b - b   freight           NaN
2     gf25a           u25c         1965              20             c - c   freight           NaN
3     gf28a           u28c         1966              15             c - c   freight           NaN
4     gf30a           u30c         1967               5             c - c   freight           NaN

Table as JSON:
{"prr class":{"0":"gs4","1":"gf25","2":"gf25a","3":"gf28a","4":"gf30a"},"builders model":{"0":"44 ton","1":"u25b","2":"u25c","3":"u28c","4":"u30c"},"build date":{"0":"1948 - 1950","1":"1965","2":"1965","3":"1966","4":"1967"},"total produced":{"0":46,"1":59,"2":20,"3":15,"4":5},"wheel arrangement":{"0":"b - b","1":"b - b","2":"c - c","3":"c - c","4":"c - c"},"service":{"0":"switcher","1":"freight","2":"freight","3":"freight","4":"freight"},"power output":{"0":null,"1":null,"2":null,"3":null,"4":null}}