The Greek electronic secondary bond market remained inactive for one more session on Friday, while yield spreads rose slightly at the end of the week. The yield spread between the 10-year Greek and German benchmark bonds widened to 16.06 pct from 15.96 pct on Thursday, with the Greek bond yielding 17.94 pct and the German Bund 1.88 pct. In interbank markets, interest rates moved slightly higher. The 12-month rate was 2.08 pct, the six-month rate 1.75 pct, the three-month 1.55 pct and the one-month rate 1.35 pct.