[
 {
  "age_bands": "A, B, C, D",
  "Pitched, slates or tiles, insulation between joists or unknown": "0.40 (100 mm) (1) (4)",
  "Pitched, slates or tiles, insulation at rafters": "2.3 (1)",
  "Flat roof (b)": "2.3 (1)",
  "Room-in-roof, all elements": "2.3 (1)",
  "Thatched roof (c)": "0.35",
  "Thatched roof, room-in-roof": "0.25",
  "Park home": "-"
 },
 {
  "age_bands": "E",
  "Pitched, slates or tiles, insulation between joists or unknown": "0.40 (100 mm) (1) (4)",
  "Pitched, slates or tiles, insulation at rafters": "1.5 (1)",
  "Flat roof (b)": "1.5 (1)",
  "Room-in-roof, all elements": "1.5 (1)",
  "Thatched roof (c)": "0.35",
  "Thatched roof, room-in-roof": "0.25",
  "Park home": "-"
 },
 {
  "age_bands": "F",
  "Pitched, slates or tiles, insulation between joists or unknown": "0.40 (100 mm) (1) (4)",
  "Pitched, slates or tiles, insulation at rafters": "0.68 (1)",
  "Flat roof (b)": "0.68 (1)",
  "Room-in-roof, all elements": "0.80 (1)",
  "Thatched roof (c)": "0.35",
  "Thatched roof, room-in-roof": "0.25",
  "Park home": "1.7"
 },
 {
  "age_bands": "G",
  "Pitched, slates or tiles, insulation between joists or unknown": "0.40 (100 mm) (1)",
  "Pitched, slates or tiles, insulation at rafters": "0.40 (1)",
  "Flat roof (b)": "0.40 (1)",
  "Room-in-roof, all elements": "0.50 (1)",
  "Thatched roof (c)": "0.35",
  "Thatched roof, room-in-roof": "0.25",
  "Park home": "0.6"
 },
 {
  "age_bands": "H",
  "Pitched, slates or tiles, insulation between joists or unknown": "0.30 (150 mm) (1)",
  "Pitched, slates or tiles, insulation at rafters": "0.35 (1)",
  "Flat roof (b)": "0.35 (1)",
  "Room-in-roof, all elements": "0.35 (1)",
  "Thatched roof (c)": "0.35",
  "Thatched roof, room-in-roof": "0.25",
  "Park home": "-"
 },
 {
  "age_bands": "I",
  "Pitched, slates or tiles, insulation between joists or unknown": "0.26 (170 mm) (1)",
  "Pitched, slates or tiles, insulation at rafters": "0.35 (1)",
  "Flat roof (b)": "0.35 (1)",
  "Room-in-roof, all elements": "0.35 (1)",
  "Thatched roof (c)": "0.35",
  "Thatched roof, room-in-roof": "0.25",
  "Park home": "0.35"
 },
 {
  "age_bands": "J",
  "Pitched, slates or tiles, insulation between joists or unknown": "0.16 (270 mm) (1)",
  "Pitched, slates or tiles, insulation at rafters": "0.20 (1)",
  "Flat roof (b)": "0.25 (1)",
  "Room-in-roof, all elements": "0.30 (1)",
  "Thatched roof (c)": "0.30",
  "Thatched roof, room-in-roof": "0.25",
  "Park home": "-"
 },
 {
  "age_bands": "K",
  "Pitched, slates or tiles, insulation between joists or unknown": "0.16 (270 mm) (1)",
  "Pitched, slates or tiles, insulation at rafters": "0.20 (1)",
  "Flat roof (b)": "0.25 (1) (2)",
  "Room-in-roof, all elements": "0.25 (1) (2)",
  "Thatched roof (c)": "0.25 (2)",
  "Thatched roof, room-in-roof": "0.25 (2)",
  "Park home": "0.30"
 },
 {
  "age_bands": "L",
  "Pitched, slates or tiles, insulation between joists or unknown": "0.16 (3) (270 mm) (1)",
  "Pitched, slates or tiles, insulation at rafters": "0.18 (1)",
  "Flat roof (b)": "0.18 (1)",
  "Room-in-roof, all elements": "0.18 (1)",
  "Thatched roof (c)": "0.18",
  "Thatched roof, room-in-roof": "0.18",
  "Park home": "-"
 },
 {
  "age_bands": "M",
  "Pitched, slates or tiles, insulation between joists or unknown": "0.15 (300mm) (1)",
  "Pitched, slates or tiles, insulation at rafters": "0.15 (1)",
  "Flat roof (b)": "0.15 (1)",
  "Room-in-roof, all elements": "0.15 (1)",
  "Thatched roof (c)": "0.15",
  "Thatched roof, room-in-roof": "0.15",
  "Park home": "0.15"
 }
]