examples

var spanGroupData = [ {"timestamp": 1525158000, "group": [ {"author_id": 0, "token_count": 45}, ]}, {"timestamp": 1533106800, "group": [ {"author_id": 0, "token_count": 486}, ]}, {"timestamp": 1535785200, "group": [ {"author_id": 0, "token_count": 1}, ]}, {"timestamp": 1541055600, "group": [ {"author_id": 0, "token_count": 353}, ]}, {"timestamp": 1543651200, "group": [ {"author_id": 0, "token_count": 113}, ]}, {"timestamp": 1546329600, "group": [ {"author_id": 0, "token_count": 41}, ]}, ]