Spot rubber continued to rule unchanged on Thursday. RSS 4 was quoted steady at ₹97 a kg by traders. The grade closed unchanged at ₹96 and ₹93 respectively, according to the Rubber Board and the dealers. RSS 3 (spot) improved to ₹89.24 (₹88.82) at Bangkok. March futures closed at ¥ 146.6 (₹89.93) on the Tokyo Commodity Exchange. Spot rubber rates (₹/kg): RSS-4: 97 (97); RSS-5: 94 (94); Ungraded: 90 (90); ISNR 20: 90 (90) and Latex (60% drc): 76 (76).