Calculation algorithm for an order

• Forecast/Real start time
  Earliest Forecast/Real start time of all related tickets
• Forecast/Real end time
  Latest Forecast/Real end time off all related tickets
• Pure production duration
  Sum of all Pure production durations of the related tickets
• Pause time
  Sum of all pause times of the related tickets
• Forecast/Real production duration
  Forecast/Real start time - Forecast/Real end time
• Production efficiency
  Average efficiency of all related tickets, weighted by the produced piece number

The data of a parent order must be calculated after the data of all related tickets.