Issue Description

I'm encountering an error in GGIR Part 4 when processing sleep diary data that appears to be correctly formatted for Time in Bed analysis. The error suggests my data has SPT indicators when it actually has TimeInBed format.

Error Message

Error: The sleep diary as provided only appears to have time indicators for SPT and not for the Time in Bed, while parameter sleepwindowType is set to TimeInBed. Either change sleepwindowType to "SPT" or change your sleep diary column names for sleep timing to "outbed" and "inbed".

Sleep Diary Format and GGIR Configuration

My CSV file has the following structure:

ID,inbed_N1,outbed_N1,inbed_N2,outbed_N2,inbed_N3,outbed_N3,inbed_N4,outbed_N4,inbed_N5,outbed_N5,inbed_N6,outbed_N6,inbed_N7,outbed_N7
724,22:30,06:45,23:15,07:00,22:45,06:30,23:00,07:15,22:00,06:00,23:30,07:30,22:15,06:45

GGIR Configuration
rGGIR(datadir = "path/to/data",
     outputdir = "path/to/output",
     mode = c(1:5),
     
     # Sleep diary settings
     loglocation = "sleep_diary.csv",
     sleepwindowType = "TimeInBed",     # Set for Time in Bed
     colid = 1,                         # ParticipantID column
     coln1 = 2,                         # First inbed_N1 column  
     nnights = 7,                       # 7 nights of data
     relyonguider = TRUE,
     def.noc.sleep = c(1),
     
     # Other settings...
     configtz = "Australia/Melbourne",
     desiredtz = "Australia/Melbourne")

Environment

GGIR Version: 3.2.9 (please specify)
Platform: macOS

Attempted Solutions

Verified column names contain "inbed" and "outbed" as expected
Confirmed sleepwindowType = "TimeInBed" parameter
Checked time format (HH:MM)
Verified colid and coln1 point to correct columns

Questions

Column naming: Could the _N1, _N2 suffixes be causing detection issues? Should I use inbed1, outbed1 instead?
Detection logic: What exactly does g.loadlog() look for when distinguishing between TimeInBed vs SPT formats?
Debugging: Is there a way to debug what GGIR detects in the sleep diary during the loading process?
Alternative formats: Should I restructure the data differently for better compatibility?