Calibration: missing time-stamp

[mungewell]

In logging the data during the calibration process, I notice that sometimes the timestamp is missing... which caused glitches in the plotted data

[548.866017 0.988578] 02:27:30:01 0.0006966665 -3.433942e-05 -0.6695886 23.21196
[549.974362 1.108345] 02:27:31:04 -0.0008033332 -5.246907e-05 -0.6695886 23.21196
[550.956958 0.982596]  -0.0004733335 -2.879265e-05 -0.6695886 23.30559 <----- double space on this line
[551.936826 0.979868] 02:27:33:03 0.0003666663 -6.569061e-05 -0.6695886 23.30559
[552.918270 0.981444] 02:27:34:02 -0.0007733335 -6.301473e-05 -0.6695886 23.30559

This is moderately common, and thus a pain to edit out...