camillef

conn = new Mongo();
db = conn.getDB("dev_system");

timestampArray = [{"timestamp": {"$lte": ISODate("2017-06-13")}}, {"timestamp": {"$gte": ISODate("2017-06-22"), "$lte": ISODate("2017-07-24")}}, {"timestamp": {"$gte": ISODate("2017-08-04")}}];


total = db.work_source_responses.count({"$or": timestampArray});
print('Total = ' + total);

metatronMatch = db.work_source_responses.count({"responses.Metatron.0": {$exists: true}, "$or": timestampArray});