ABUJA — Supply of cooking gas in Nigeria rose to 5.33 kilotonnes a day in July from 5.16 in June, according to the Nigerian Midstream and Downstream Petroleum Regulatory Authority. Local production accounted for 82 per cent and imports for 18 per cent. The average price in Lagos fell to about N1,235 per kg from N1,776, after peaking at around N2,500 in mid-June.