Fix issue in daily updates

[153957]

There is some issue in the daily update. This is reported in Sentry.

Traceback (most recent call last):
  File "…/…/multiprocessing/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
  File "…publicdb/www/publicdb/histograms/jobs.py", line 293, in perform_events_tasks
    update_detector_timing_offsets(summary)
  File "…publicdb/www/publicdb/histograms/jobs.py", line 456, in update_detector_timing_offsets
    offsets = esd.determine_detector_timing_offsets_for_summary(summary)
  File "…publicdb/www/publicdb/histograms/esd.py", line 397, in determine_detector_timing_offsets_for_summary
    offsets = determine_detector_timing_offsets(table, station)
  File "…/…/site-packages/sapphire/analysis/calibration.py", line 60, in determine_detector_timing_offsets
    off...

ValueError `ydata` must not be empty!

Investigate for which station (Summary) this is happening and fix the issue.
Might be related to bad data, or a bug in the data analysis.

This might be responsible for the incorrect status indicators on the main station data overview page.