Saudi Arabia’s crude exports have risen in October compared with September, according to two of three ship-tracking companies, despite Iranian attacks on shipping in the Gulf and claims by Yemen’s Houthis of attacks on Saudi oil facilities, Reuters reports.

Kpler, the third ship tracker, showed a fall in exports, and many tankers have switched off their tracking signals, which makes the true volumes hard to pin down.

Saudi crude exports averaged about 7.9 million barrels per day (bpd) for the first 29 days of the month, says TankerTrackers.com, up from 5.8m bpd in September. This comprises 3.32m bpd from the western coast and 4.55m bpd from the east, the preliminary data shows.

Exports from Saudi Arabia’s Yanbu port are higher following a dip in September, said tanker tracker Petro-Logistics.

“Total volumes coming out of the Strait [of Hormuz] have fallen by 2-3m bpd from the peak levels seen earlier in October,” says Virginie Bahnik of Petro-Logistics. But Saudi exports overall are still strong and will end the month higher than in September.

Data from Kpler shows total Saudi crude exports at 5.72m bpd so far in October, compared to 6.70m bpd in September.