Period of activity
1
0
1
1190
1
1300
2
1450
1460
2
1470
1480
1
1490
2
1500
3
1510
3
1520
1530
2
1540
2
1550
1
1560
1
1570
1
1580
1
1590
5
1600
3
1610
1
1620
7
1630
7
1640
14
1650
5
1660
5
1670
5
1680
1
1690
4
1700
3
1710
4
1720
10
1730
4
1740
9
1750
10
1760
7
1770
7
1780
2
1790
1
1800
2
1810
12
1820
6
1830
4
1840
6
1850
10
1860
8
1870
8
1880
7
1890
3
1900
1
1910
1
1920
1
1960
1
1970
1980
1
1990
⋯
⋯
⋯
⋯
