errata

var spanGroupData = [ {"timestamp": 1556694000, "group": [ {"author_id": 3, "token_count": 1}, ]}, {"timestamp": 1614585600, "group": [ {"author_id": 0, "token_count": 435}, ]}, {"timestamp": 1651388400, "group": [ {"author_id": 1, "token_count": 20}, ]}, {"timestamp": 1654066800, "group": [ {"author_id": 1, "token_count": 4}, ]}, ]

var spanGroupData = [ {"timestamp": 1498892400, "group": [ {"author_id": 2, "token_count": 2}, ]}, {"timestamp": 1556694000, "group": [ {"author_id": 3, "token_count": 1}, ]}, {"timestamp": 1614585600, "group": [ {"author_id": 0, "token_count": 101}, ]}, {"timestamp": 1651388400, "group": [ {"author_id": 1, "token_count": 262}, ]}, {"timestamp": 1656658800, "group": [ {"author_id": 1, "token_count": 26}, ]}, {"timestamp": 1662015600, "group": [ {"author_id": 1, "token_count": 30}, {"author_id": 2, "token_count": 4}, ]}, {"timestamp": 1664607600, "group": [ {"author_id": 1, "token_count": 20}, ]}, ]