ia64

var spanGroupData = [ {"timestamp": 1430463600, "group": [ {"author_id": 0, "token_count": 35}, ]}, {"timestamp": 1467356400, "group": [ {"author_id": 0, "token_count": 16}, ]}, {"timestamp": 1472713200, "group": [ {"author_id": 2, "token_count": 16}, ]}, {"timestamp": 1509519600, "group": [ {"author_id": 3, "token_count": 3}, ]}, {"timestamp": 1538377200, "group": [ {"author_id": 1, "token_count": 18}, ]}, ]