mic

var spanGroupData = [ {"timestamp": 1378018800, "group": [ {"author_id": 1, "token_count": 4}, {"author_id": 0, "token_count": 8926}, ]}, {"timestamp": 1380610800, "group": [ {"author_id": 2, "token_count": 66}, {"author_id": 3, "token_count": 19}, ]}, {"timestamp": 1383289200, "group": [ {"author_id": 1, "token_count": 47}, ]}, {"timestamp": 1409554800, "group": [ {"author_id": 6, "token_count": 3}, ]}, {"timestamp": 1441090800, "group": [ {"author_id": 1, "token_count": 830}, ]}, {"timestamp": 1454313600, "group": [ {"author_id": 7, "token_count": 2}, {"author_id": 3, "token_count": 1}, ]}, {"timestamp": 1462086000, "group": [ {"author_id": 4, "token_count": 4}, ]}, {"timestamp": 1506841200, "group": [ {"author_id": 5, "token_count": 3}, ]}, ]