examples

var spanGroupData = [ {"timestamp": 1525158000, "group": [ {"author_id": 0, "token_count": 40}, ]}, {"timestamp": 1533106800, "group": [ {"author_id": 0, "token_count": 485}, ]}, {"timestamp": 1535785200, "group": [ {"author_id": 0, "token_count": 1}, ]}, {"timestamp": 1541055600, "group": [ {"author_id": 0, "token_count": 130}, ]}, {"timestamp": 1543651200, "group": [ {"author_id": 0, "token_count": 64}, ]}, {"timestamp": 1546329600, "group": [ {"author_id": 0, "token_count": 39}, ]}, {"timestamp": 1551427200, "group": [ {"author_id": 0, "token_count": 46}, ]}, {"timestamp": 1559372400, "group": [ {"author_id": 0, "token_count": 107}, ]}, {"timestamp": 1561964400, "group": [ {"author_id": 0, "token_count": 733}, ]}, {"timestamp": 1564642800, "group": [ {"author_id": 0, "token_count": 145}, ]}, {"timestamp": 1572591600, "group": [ {"author_id": 1, "token_count": 8}, ]}, {"timestamp": 1577865600, "group": [ {"author_id": 2, "token_count": 3}, ]}, ]