Which factor contributes more to the fuel consumption gap between in-laboratory vs. real-world driving conditions? An independent component analysis

All the vehicle information are stored in 【Vehicle information.xlsx】.
Each trip's vehicle information, start time, end time, travel distance, and fuel consumption (including in-laboratory and real-world fuel consumption and model calculations) are stored in 【Vehicle fuel consumption.csv】. The detailed model calculations are described in our research paper.