[up 2882.77 clk 2885.692675] B7B BEGIN obs=180s floor=1790928541 ntp=89.109.251.21
[up 2882.78 clk 2885.700762] usleep ok
[up 2883.64 clk 2886.562849] pre snapshot done
[up 2883.85 clk 2886.773765] checks PASS, DMS offset vs clock 1790931373.043243 s
[up 2883.86 clk 2886.780049] DRY RUN: stop before clock step