Table 2 Selected features of the datasets from TS1. Age range values have been rounded out to 5 years

10 years IAτ

M1a

1

1050–1280 cal AD (M9a)

1220–1380 cal AD (M4a)

20

− 35–225 years

1242 cal AD

2

1040–1220 cal AD (M3a)

1220–1380 cal AD (M4a)

19

20–250 years

1224 cal AD

3

1040–1230 cal AD (M12a)

1220–1300 (M15a)

18

15–235 years

1225 cal AD

4

1040–1230 cal AD (M14a)

1210–1290 cal AD (M16a)

19

10–230 years

1224 cal AD

Mean Average 10 years IAτ

19

5–235 years

1229 cal AD

50 years IAτ

M1b

1

990–1160 cal AD (M9b)

1220–1300 cal AD (M14b)

11

85–290 years

1180 cal AD

2

970–1160 cal AD (M14b)

1220–1390 cal AD (M15b)

13

120–385 years

1181 cal AD

3

1020–1210 cal AD (M11b)

1220–1300 cal AD (M9b)

16

55–250 years

1193 cal AD

4

890–1120 cal AD (M14b)

1210–1290 cal AD (M13b)

13

160–380 years

1177 cal AD

Mean Average 50 years IAτ

13

105–325 years

1183 cal AD

100 years IAτ

M1c

1

990–1160 cal AD (M4c)

1220–1380 cal AD (M16c)

16

80–280 years

1199 cal AD

2

680–950 cal AD (M4c)

1210–1290 cal AD (M9c)

9

310–570 years

1145 cal AD

3

410–570 cal AD (M3c)

1180–1290 cal AD (M18c)

10

670–845 years

1127 cal AD

4

770–980 cal AD (M17c)

1210–1290 cal AD (M3c)

11

260–500 years

1151 cal AD

Mean average 100 years IAτ

11.5

330–550 years

1156 cal AD

200 years IAτ

M1d

1

400–560 cal AD (M3d)

1210–1290 cal AD (M18d)

6

680–865 years

982 cal AD

2

670–880 cal AD (M2d)

1160–1280 cal AD (M7d)

4

315–575 years

1062 cal AD

3

560–660 cal AD (M6d)

1180–1290 cal AD (M12d)

5

570–710 years

1025 cal AD

4

680–950 cal AD (M5d)

1170–1290 cal AD (M18d)

5

300–560 years

1086 cal AD

Mean Average 200 years IAτ

5

465–680 years

1039 cal AD

500 years IAτ

M1e

1

2270–1980 cal BC (M14e)

1160–1280 cal AD (M12e)

2

3205–3465 years

606 cal AD

2

1270–1010 cal BC (M10e)

1160–1280 cal AD (M11e)

4

2245–2520 years

762 cal AD

3

360–40 cal BC (M14e)

1220–1390 cal AD (M5e)

3

1315–1640 years

780 cal AD

4

1950–1740 cal BC (M1e)

1150–1280 cal AD (M10e)

1

2920–3190 years

491 cal AD

Mean Average 500 years IAτ

2.5

2420–2705 years

670 cal AD