jubilaeumssaeule_stgt.ac material tuerkis /sim/time/sun-angle-rad 1.67 0. 0.30 0.25 material grau70 /sim/time/sun-angle-rad 1.67 0.35 0.35 0.35 material braun /sim/time/sun-angle-rad 1.67 0.23 0.20 0.18