NyAlesund micro pulse lidar (MPL) ver.0 data
https://ads.nipr.ac.jp/data/meta/A20190912-002

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Folder: cbh
Cloud base height (CBH)
Monthly file of 3-minute interval

Details
1. File names: sig/cbh_YYYYMM.txt

2. Data format in files

  day(1-31)+time(0-1)UT
  Time(0-24)UT
  CBH1 - 3-min averaged cbh (km, a.g.l.)
  CBH2 - recalculated from raw signal (km, a.g.l.)

ex) 
   1.00000    0.0000     1.543     1.530
   1.00208    0.0500     1.573     1.530
   1.00417    0.1000     1.543     1.530
   1.00625    0.1500     1.543     1.530
   1.00833    0.2000     1.543     1.530
   1.01042    0.2500     1.543     1.530
   1.01250    0.3000    -0.500    -0.500
   1.01458    0.3500    -0.500    -0.500
   1.01667    0.4000    -0.500    -0.500

  31.98541   23.6499     1.064     0.750
  31.98750   23.6999     1.424     0.690
  31.98958   23.7499     1.064     0.720
  31.99166   23.7999     1.004     0.990
  31.99375   23.8499     0.674     0.990
  31.99583   23.8999     0.674     0.990
  31.99791   23.9499     0.674     0.960

* CBH=-0.500 : no cloud