Tag 'railway:signal:combined:substitute_signal = DE-ESO:dr:zs1'

Value histogram for key 'source'

• 10: bing; estimate; survey
• 4: bing;estimate;extrapolate;survey
• 4: estimate; extrapolate; survey
• 3: bing; estimation; survey
• 3: survey
• 1: Berlin Orthophoto; surveys
• 1: estimation; So 19 signals
• 1: bing; survey
• 1: estimate; survey
• 1: estimation; survey