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Table 1 Historical samples A (Design: Adobe, Region: Bakhtiari-Esfahan, Sample ID: A1, A2, A3, Type of sample: Knot); B (Design: Border, Region: Esfahan, Sample ID: B1, B2, B3, Type of sample: Knot); C (Design: Toranj (medallion), Region: Qashghai-Fars, Sample ID: C1, C2, Type of sample: Knot); D (Design: Vagireh, Region: Arak, Sample ID: D1, D2, Type of sample: Knot); E (Design: Mahi dar ham (fish), Region: Malayer-Hamedan, Sample ID: E1, E2, Type of sample: Knot); F (Design: Shekasteh-Khur, Region: Bakhtiari-Esfahan, Sample ID: F1, F2, F3, F4, Type of sample: Knot); G (Design: Lachak va Toranj, Region: Saneh-Kurdestan, Sample ID: G1, G2, Type of sample: Knot)

From: Twentieth century Iranian carpets: investigation of red dye molecules and study of traditional madder dyeing techniques

  1. A1: L*: 25.97, a*: 23.26, b*: 8.55; A2: L*: 39.84, a*: 25.77, b*: 11.53; A3: L*: 34.89, a*: 28.15, b*: 18.29
  2. B1: L*: 27.06, a*: 11.34, b*: 6.41; B2: L*: 37.22, a*: 18.09, b*: 10.44; B3; L*: 39.84, a*: 25.77, b*: 11.53
  3. C1: L*: 25.06, a*: 24.50, b*: 9.01; C2: L*: 24.50, a*: 17.02, b*: 6.95
  4. D1: L*: 41.04, a*: 25.87, b*: 12.99; D2: L*: 28.20, a*: 6.53, b*: 4.47
  5. E1: L*: 35.31, a*: 29.30, b*: 17.80; E2: L*: 43.01, a*: 23.32, b*: 21.94
  6. F1: L*: 21.56, a*: 10.52, b*: 12.42; F2: L*: 36.52, a*: 23.27, b*: 10.53; F3: L*: 24.65, a*: 21.23, b*: 7.46; F4: L*: 27.32, a*: 22.88, b*: 9.45
  7. G1: L*: 33.79, a*: 25.70, b*: 17.40; G2: L*: 37.31, a*: 30.70, b*: 22.19