[
 {
  "value": "2.697",
  "sigma": "0.015",
  "source": "Aspect, Grangier and Roger, Phys Rev Lett 49, 91",
  "year": "1982",
  "provenance": "in house: fourth-dimension/PRIOR-ART.md row of 18:56 (S_QM = 2.70 +/- 0.05 with their polarizer efficiencies)",
  "pooled": "yes"
 },
 {
  "value": "2.73",
  "sigma": "0.02",
  "source": "Weihs et al., Phys Rev Lett 81, 5039",
  "year": "1998",
  "provenance": "outward: arXiv quant-ph/9810080, PRIOR-ART row 6",
  "pooled": "yes"
 },
 {
  "value": "2.42",
  "sigma": "0.20",
  "source": "Hensen et al., Nature 526, 682",
  "year": "2015",
  "provenance": "in house: atlas 33-f021",
  "pooled": "yes"
 },
 {
  "value": "2.37",
  "sigma": "0.09",
  "source": "Yin et al., Science 356, 1140",
  "year": "2017",
  "provenance": "in house: fourth-dimension/PRIOR-ART.md row of 18:58",
  "pooled": "yes"
 }
]