穀Chronology

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6107308301000110014101680177018001900 620–729740–829840–9991010–10991200–14091420–16791690–1769

2

2

2

1

2

1

1

3

2

1

1

1

1

3

16 +10

3

3

1

2

5

6

No year recorded 55

+49

Each crop stands at the decade of the first year its book's date gives; a date given only as before a year stands at that year. Dates come from the catalogues and editions cited with each record. The bars draw the whole span and their counts to scale; in the strip below them, fifty years or more with no crop are folded and marked. Japanese dates converted with HuTime ↗