Despite early gains at the NBP, the Zeebrugge Day-ahead contract traded rangebound during the morning at 23.10-23.70 p/th. Traders closed their positions earlier than usual, players said, resulting in thin liquidity during the afternoon. Day-ahead was subsequently quoted at a wide spread of 19.50-24.80 p/th later on.Though the supply problems in the UK had had no impact on Interconnector flows,...