The apparent difference in steepness arises from different scaling in both altitude ("typical flight" reaches almost 12 km, while "test flight" reaches almost 6

The apparent difference in steepness arises from different scaling in both altitude ("typical flight" reaches almost 12 km, while "test flight" reaches almost 6 km) and time (the 5 minute intervals are twice as large in the "typical flight" graph). The actual time to reach 6 km was around 6.5 minutes in the "typical flight" and around 5 minutes in the "test flight", as can be seen by scaling both graphs to the same proportions. (I've done it quickly with Paint here: https://i.imgur.com/IZyYoCl.png https://i.imgur.com/IZyYoCl.png) Is that 1.5 minute difference really that high? Honest question, I really don't know anything about this topic. EDIT: Sorry, this should have been a reply to @rkagerer's comment.