0007+124 Partially resolved by the 4C interferometer.
0411+141 Partially resolved by the 4C interferometer.
0832+143 Slightly resolved by the 4C interferometer.
0945+734 The total angular size of this source is 18 arcmin. The 4CT flux 
0945+734  density is retained because it fits well on the radio spectrum 
0945+734  (Mayer, 1979MNRAS.186...99M).
1009+748 The radio map given in the Appendix suggests that 1009+748 should not 
1009+748  have been resolved by the 4C interferometer. A partially-resolved 
1009+748  bridge of emission may be responsible for the difference between the 
1009+748  4C and 4CT measurements. For consistency, we adopt the latter.
1227+119 This source lies in a region of sky obscured by sidelobes of M87 in 
1227+119  the 3CR, 4C and 4CT surveys.
1349+647 This source (3C 292) is not in the revised 3C catalogue. The compact 
1349+647  source at 13h 49m 27.0s, 64{deg}43'35" appears to be unrelated and, 
1349+647  since it has an inverted spectrum, makes a negligible contribution to 
1349+647  the flux density at 178MHz (Appendix).
1615+351 Heavily resolved by the 3CR and 4C telescopes.
1637+826 The overall angular size of this source is 72 arcmin; it is heavily 
1637+826  resolved by the 3CR telescope and is outside the 4C and 4CT survey 
1637+826  areas.
1732+160 This 16-arcsec double source should be unresolved by the 4C 
1732+160  interferometer.
1759+137 The radio map given in the Appendix suggests that this source should 
1759+137  not have been resolved by the 4C interferometer.
2247+113 Heavily resolved by the 4C interferometer.
2309+184 This source (3C 457) is not in the revised 3C catalogue. It is 
2309+184  partially resolved by the 4C interferometer.