Orientations of Gotlandic grooves

In the diagram below are shown the directions relative the horizon of 1253 grooves.
They are measured from the north (0 degrees) over east (90 degress) to the south (180 degrees). They are collected in groups for every 3 degree.
On the vertical scale are shown the number of grooves for each group.

Archeoastronomical studies

Place	The sun	The sun	The moon	The moon	The moon	The moon
	north	south	max.north	min.north	min.south	max.south
South Gotland	41°,2	134°,9	29°,2	55°,2	125°,4	151°,8
Middle Gotland	40°,1	135°,8	27°,6	54°,6	126°,1	153°,6
North Gotland	39°,2	136°,5	26°,0	54°,0	126°,7	155°,2

Tabell 2 The sun's and the moon's most northern and most southern rises today.

år 3000 f.Kr

Place	The sun	The sun	The moon	The moon	The moon	The moon
	north	south	max.north	min.north	min.south	max.south
South Gotland	39°,7	136°,3	27°,3	54°,0	126°,7	153°,8
Middle Gotland	38°,6	137°,2	25°,5	53°,3	127°,3	155°,8
North Gotland	37°,5	138°,1	23°,7	52°,7	128°,0	157°,6

Tabell 3 The sun's and the moon's most northern and most southern rises ca 3000 BC.
Corresponding page in the book "Gotlands slipskåror" (in Swedish)

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Created by Sören Gannholm

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