NEW DELHI, Jan 18 (Reuters) - Asia"s cash premiums for 10 ppm gasoil inched higher on Tuesday, rising for a fourth straight day, buoyed by tightening inventory levels in global markets amid increasing industrial demand. Cash premiums for gasoil with 10 ppm sulphur content climbed to $1.24 a barrel to Singapore quotes, compared with $1.23 per barrel in the last session. "Across the key diesel storage hubs – the ARA region, Fujairah and Singapore – diesel inventories are challenging their historical lows as refinery supplies struggle to keep pace with demand," Serena Huang, analyst at the consultancy Vortexa, said in a note. On supply side, China"s diesel exports in December sank to their lowest monthly level since March 2015, government data showed. read more SINGAPORE CASH DEALS O/AS - Two gasoil deal, no jet fuel trades. OTHER NEWS - Benchmark oil prices climbed to their highest level since 2014 on Tuesday over tight supply outlook. read more ASSESSMENTS MID-DISTILLATES CASH ($/T) ASIA CLOSE Change % Change Prev Close RIC Spot Gas Oil 0.5% 100.46 2.27 2.31 98.19 GO 0.5 Diff -0.92 0.03 -3.16 -0.95 Spot Gas Oil 0.25% 100.71 2.27 2.31 98.44 GO 0.25 Diff -0.67 0.03 -4.29 -0.70 Spot Gas Oil 0.05% 101.07 2.27 2.30 98.80 GO 0.05 Diff -0.31 0.03 -8.82 -0.34 Spot Gas Oil 0.001% 102.62 2.25 2.24 100.37 GO 0.001 Diff 1.24 0.01 0.81 1.23 Spot Jet/Kero 99.81 1.82 1.86 97.99 Jet/Kero Diff 1.00 0.10 11.11 0.90 For a list of derivatives prices, including margins, please double click the RICs below. Brent M1 Gasoil M1 Gasoil M1/M2 Gasoil M2 Regrade M1 Regrade M2 Jet M1 Jet M1/M2 Jet M2 Gasoil 500ppm-Dubai Cracks M1 Gasoil 500ppm-Dubai Cracks M2 Jet Cracks M1 Jet Cracks M2 East-West M1 East-West M2 LGO M1 LGO M1/M2 LGO M2 Crack LGO-Brent M1 Crack LGO-Brent M2