feedgnuplot/t/timefmt-plot-with-monotonic.ref

   10 ++---------+-----------+----------+----------+----------+-----------+----------+---------+A
      +          +           +          +          +          +           +          +          +
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  9.5 ++                                                                                       ++
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    9 ++                                                                  A                    ++
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  8.5 ++                                                                                       ++
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    8 ++                                           A                                           ++
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  7.5 ++                                                                                       ++
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    7 ++                     A                                                                 ++
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  6.5 ++                                                                                       ++
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      +          +           +          +          +          +           +          +          +
    6 A+---------+-----------+----------+----------+----------+-----------+----------+---------++
    05:07      05:07       05:08      05:08      05:09      05:09       05:10      05:10      05:11