Spot rubber continued to rule firm on Thursday. The trend was partially mixed as latex finished flat on extremely low demand. RSS 4 improved to ₹99 (₹97.50) a kg, according to traders. The grade firmed up to ₹98 (₹97) and ₹95 (₹94) respectively, according to the Rubber Board and the dealers. March futures flared up to ₹101.14 (₹98.90), April to ₹105.10 (₹102.74) on the National Multi Commodity Exchange. RSS 3 (spot) improved to ₹91.19 (₹90.43) at Bangkok. March futures closed at ¥155.7 (₹91.98) on the Tokyo Commodity Exchange. Spot rubber rates (₹/kg): RSS-4: 99 (97.50); RSS-5: 96(95.50); Ungraded: 93(92); ISNR 20: 92 (91.50) and Latex (60% drc): 74.50 (74.50). Our Correspondent