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Move comes as ILWU, PMA talks enter 10th month.
PMA neither loaded nor unloaded ships over the weekend, leaving yard and gate operations up to individual terminals.
PMA said ships will not load or unload cargo Thursday, Saturday, Sunday or Monday due to continuing ILWU slowdowns.
According to the freight transportation forecaster, lower fuel costs had a positive impact on the index.
Volume increased for the airfreight carrier, but overall yield was down.
The shipping giant will return profits from the sale to its shareholders.