{
  "topic": "default channel grouping",
  "worked_example": {
    "sessions_total": 1840,
    "sessions_by_channel": {
      "Organic Search": 612,
      "Direct": 438,
      "Paid Search": 291,
      "Organic Social": 204,
      "Email": 173,
      "Referral": 122
    },
    "share_percent": {
      "Organic Search": "33.3",
      "Direct": "23.8",
      "Paid Search": "15.8",
      "Organic Social": "11.1",
      "Email": "9.4",
      "Referral": "6.6"
    }
  },
  "checkpoints": [
    "Reports > Acquisition > Traffic acquisition",
    "Primary dimension is Session default channel group",
    "Unassigned row checked against UTM tags"
  ]
}