Thanks Gargamel. Every test run I've done so far I have started as a new career, setting sails at 1. Aug and not saving, just aborting and restarting for each test. Much quicker than sailing 3600 km hither and dither

beside, the measurements have to be done at the same day each test run but it sure adds to the already mindnumbing sun cycle that the game can't keep track of itself. If the sun cycle can be sorted then I'm sure the other bits can be introduced to the calculations later.