{
 "slug": "hevelius",
 "facts": {
  "text_I": {
   "value": 488,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-i/pages: page_*.xml without status cover or unscanned"
  },
  "gap_I": {
   "value": 110,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-i/pages: page XML with status=unscanned"
  },
  "year_1": {
   "value": 2014,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-i/pdai-config.json document.year, checked against the printed leaf"
  },
  "text_II": {
   "value": 487,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-ii/pages: page_*.xml without status cover or unscanned"
  },
  "gap_II": {
   "value": 13,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-ii/pages: page XML with status=unscanned"
  },
  "year_2": {
   "value": 2017,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-ii/pdai-config.json document.year, checked against the printed leaf"
  },
  "text_III": {
   "value": 705,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-iii/pages: page_*.xml without status cover or unscanned"
  },
  "gap_III": {
   "value": 19,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-iii/pages: page XML with status=unscanned"
  },
  "year_3": {
   "value": 2020,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-iii/pdai-config.json document.year, checked against the printed leaf"
  },
  "text_IV": {
   "value": 574,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-iv/pages: page_*.xml without status cover or unscanned"
  },
  "gap_IV": {
   "value": 0,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-iv/pages: page XML with status=unscanned"
  },
  "year_4": {
   "value": 2021,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-iv/pdai-config.json document.year, checked against the printed leaf"
  },
  "n_vols": {
   "value": 4,
   "source": "four document folders under hevelius/"
  },
  "transcribed_pages": {
   "value": 2254,
   "source": "sum of transcribed page XML"
  },
  "gap_pages": {
   "value": 142,
   "source": "sum of unscanned gap notices"
  },
  "letters_iii": {
   "value": 259,
   "source": "/Volumes/PDAI-1/pdai-collections/hevelius/hevelius-iii/pages/page_010/page_010.xml: the introduction states 259 letters"
  },
  "nr_blatt_1": {
   "value": 1,
   "source": "gallery page folder number"
  },
  "nr_blatt_2": {
   "value": 2,
   "source": "gallery page folder number"
  },
  "nr_blatt_3": {
   "value": 2,
   "source": "gallery page folder number"
  },
  "nr_blatt_4": {
   "value": 14,
   "source": "gallery page folder number"
  }
 },
 "notes": [
  "Tome II year 2017 is the series entry printed in volume IV, page_008. Its own copyright verso is blank."
 ]
}