Photoelectric uvbt*Gb photometry of 230 stars brighter than *Gm*Up*Ug = 13.0 in the two b = +75*Oo fields SA 80 and SA 81

Photoelectric uvbtGb photometry of 230 stars brighter than GmUpUg = 13.0 in the two b = +75*Oo fields SA 80 and SA 81