JSONPath experts - Please Help

[high-t]

I have the following JSON:

[
  {},
  {
    "1": "DB1",
    "2": "     13.94 MB",
    "3": "NT AUTHORITY\\SYSTEM",
    "4": "8",
    "5": "Feb 19 2020",
    "6": "Status=ONLINE",
    "7": " Updateability=READ_WRITE",
    "8": " UserAccess=MULTI_USER",
    "9": " Recovery=FULL",
    "10": " Version=869",
    "11": " Collation=SQL_Latin1_General_CP1_CI_AS",
    "12": " SQLSortOrder=52",
    "13": " IsAutoCreateStatistics",
    "14": " IsAutoUpdateStatistics",
    "15": " IsFullTextEnabled",
    "16": "140"
  },
  {
    "1": "B2",
    "2": "      6.00 MB",
    "3": "NT AUTHORITY\\SYSTEM",
    "4": "7",
    "5": "Feb 19 2020",
    "6": "Status=ONLINE",
    "7": " Updateability=READ_WRITE",
    "8": " UserAccess=MULTI_USER",
    "9": " Recovery=FULL",
    "10": " Version=869",
    "11": " Collation=SQL_Latin1_General_CP1_CI_AS",
    "12": " SQLSortOrder=52",
    "13": " IsAutoCreateStatistics",
    "14": " IsAutoUpdateStatistics",
    "15": " IsFullTextEnabled",
    "16": "140"
  },
  {
    "1": "DB3",
    "2": "   3836.19 MB",
    "3": "NT AUTHORITY\\SYSTEM",
    "4": "12",
    "5": "Feb 19 2020",
    "6": "Status=ONLINE",
    "7": " Updateability=READ_WRITE",
    "8": " UserAccess=MULTI_USER",
    "9": " Recovery=FULL",
    "10": " Version=869",
    "11": " Collation=SQL_Latin1_General_CP1_CI_AS",
    "12": " SQLSortOrder=52",
    "13": " IsAutoCreateStatistics",
    "14": " IsAutoUpdateStatistics",
    "15": " IsFullTextEnabled",
    "16": "140"
  }
]

I need to extract the size (key "2") of each db (key "1").

I can't seem to understand how to do that in JSONPath.
Please advise...

Thank you in advance!
Amit.