In a roasting system with five chambers, if each chamber is designed to handle a specific roasting step, the dwell time in each chamber will roughly match the time required for that step.

However, the exact amount of time required in each chamber can vary depending on several factors. These factors include the type, size, and density of the beans, the desired roasting level, and the capabilities of the roasting equipment.

Let's assume the total roasting time is 15 minutes. And let's assume that each of the five chambers is responsible for the dry stage, brown stage, initial after first crack stage, intermediate stage, final roasting and cooling stage.

In this case, the approximate time distribution can be:

Dry phase: 4.5 minutes, approximately 30% of total roasting time
Brown phase: 3 minutes, approximately 20% of the total roasting time
Early stage after first crack: 2.25 minutes, about 15% of total roasting time
Intermediate stage: 2.25 minutes, approximately 15% of the total roasting time
Final roasting and cooling phase: 3 minutes, approximately 20% of total roasting time
emphasize once again.