Having Trouble to understand the meaning of log trace in iotawatt

Dear all,
Recently I have installed my iotawatt and monitored its serial communication. Everything is fine, However, I could not understand the meaning of log trace to debug the behaviour of device. For example, what does the below trace mean?

8/28/21 05:32:09z Trace: 1:3, 1:3, 1:6[1], 1:6[2], 1:6[3], 1:5[31], 1:6[4], 31:0, 31:1, 31:2[5], 31:120, 21:100[31], 21:101, 31:120, 31:122, 31:123, 31:124,
3:95, 3:95, 31:126, 31:1, 1:6[6], 1:1[2], 1:2[3], 9:0[3], 9:0, 9:1, 8:4, 8:6, 8:8, 8:9, 9:3

It’s a debug tool. The entries show where the firmware executed leading up to the restart. You would need to look at the code to understand how it works.