{
  "source": "Pigati et al. (2023), Science 382, 73-75, Fig. 2A: the printed text label beside each calibrated age, in the order the text layer gives them, for example '21.13±0.25 ka (1a)'. Transcribed from the article's text layer, not digitised from graphics.",
  "join": "Seed labels are joined to AMS identifiers by the printed midpoint and half-span, which are unique within the 2021 release. Pollen labels are printed to one decimal and are recorded for reference only.",
  "rows": [
    {
      "label": "1a",
      "material": "seed",
      "printed": "21.13±0.25 ka",
      "mid_ka": "21.13",
      "half_ka": "0.25"
    },
    {
      "label": "1a",
      "material": "seed",
      "printed": "21.75±0.31 ka",
      "mid_ka": "21.75",
      "half_ka": "0.31"
    },
    {
      "label": "1aa",
      "material": "pollen",
      "printed": "23.4±2.5 ka",
      "mid_ka": "23.4",
      "half_ka": "2.5"
    },
    {
      "label": "1e",
      "material": "seed",
      "printed": "22.15±0.23 ka",
      "mid_ka": "22.15",
      "half_ka": "0.23"
    },
    {
      "label": "1b",
      "material": "seed",
      "printed": "21.68±0.30 ka",
      "mid_ka": "21.68",
      "half_ka": "0.30"
    },
    {
      "label": "1dd",
      "material": "pollen",
      "printed": "22.8±2.4 ka",
      "mid_ka": "22.8",
      "half_ka": "2.4"
    },
    {
      "label": "1d",
      "material": "seed",
      "printed": "22.55±0.28 ka",
      "mid_ka": "22.55",
      "half_ka": "0.28"
    },
    {
      "label": "1ff",
      "material": "pollen",
      "printed": "22.6±2.3 ka",
      "mid_ka": "22.6",
      "half_ka": "2.3"
    },
    {
      "label": "1d",
      "material": "seed",
      "printed": "22.64±0.26 ka",
      "mid_ka": "22.64",
      "half_ka": "0.26"
    },
    {
      "label": "1f",
      "material": "seed",
      "printed": "22.65±0.26 ka",
      "mid_ka": "22.65",
      "half_ka": "0.26"
    },
    {
      "label": "3a",
      "material": "seed",
      "printed": "22.72±0.24 ka",
      "mid_ka": "22.72",
      "half_ka": "0.24"
    },
    {
      "label": "3a",
      "material": "seed",
      "printed": "22.86±0.32 ka",
      "mid_ka": "22.86",
      "half_ka": "0.32"
    },
    {
      "label": "2a",
      "material": "seed",
      "printed": "22.80±0.26 ka",
      "mid_ka": "22.80",
      "half_ka": "0.26"
    },
    {
      "label": "2a",
      "material": "seed",
      "printed": "22.87±0.30 ka",
      "mid_ka": "22.87",
      "half_ka": "0.30"
    }
  ]
}