Eratosthenes

Tarragona, Spain

September 2013

Tarragona Spain IES Antoni de Martí i Franquès 41°07’N 01°15’E
Date Gnomon Shadow Angle
september 17 78 cm 63 cm 38°55’ = 38.928°
september 18 90 cm 72.5 cm 38°51’ = 38.853°
september 19 90 cm 70.9 cm 38°13’ = 38.23°
september 20 209 cm 173 cm 39°36’ = 39.616°
september 23 100 cm 95 cm 41°22’ = 41.373°
september 27 100 cm 96.5 cm 41°21’ = 41.36°

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