inc

var spanGroupData = [ {"timestamp": 1535785200, "group": [ {"author_id": 0, "token_count": 1413}, ]}, {"timestamp": 1543651200, "group": [ {"author_id": 0, "token_count": 28}, ]}, {"timestamp": 1554102000, "group": [ {"author_id": 0, "token_count": 76}, {"author_id": 3, "token_count": 7}, ]}, {"timestamp": 1559372400, "group": [ {"author_id": 0, "token_count": 12}, ]}, {"timestamp": 1564642800, "group": [ {"author_id": 0, "token_count": 94}, ]}, {"timestamp": 1575187200, "group": [ {"author_id": 0, "token_count": 21}, ]}, {"timestamp": 1577865600, "group": [ {"author_id": 0, "token_count": 13}, ]}, {"timestamp": 1583049600, "group": [ {"author_id": 0, "token_count": 2}, ]}, {"timestamp": 1585724400, "group": [ {"author_id": 6, "token_count": 2}, ]}, {"timestamp": 1598943600, "group": [ {"author_id": 0, "token_count": 10}, ]}, {"timestamp": 1606809600, "group": [ {"author_id": 0, "token_count": 8}, ]}, {"timestamp": 1609488000, "group": [ {"author_id": 0, "token_count": 26}, ]}, {"timestamp": 1630479600, "group": [ {"author_id": 4, "token_count": 4}, ]}, {"timestamp": 1656658800, "group": [ {"author_id": 0, "token_count": 13}, ]}, {"timestamp": 1672560000, "group": [ {"author_id": 1, "token_count": 8}, ]}, {"timestamp": 1690873200, "group": [ {"author_id": 2, "token_count": 10}, ]}, {"timestamp": 1701417600, "group": [ {"author_id": 5, "token_count": 4}, ]}, {"timestamp": 1740816000, "group": [ {"author_id": 7, "token_count": 1}, ]}, {"timestamp": 1767254400, "group": [ {"author_id": 1, "token_count": 4}, ]}, ]