Airglow Data Obtained at Kiso Station,
Tokyo Astronomical Observatory, The University of Tokyo
(137.63 E, 35.79 N, altitude=1130m)

Airglow intensities at zenith (3 degrees diameter):
Observations have been made regularly on moonless clear nights.

The reduction of data had been carried out by Photometry Division,
Tokyo Astronomical Observatory, The University of Tokyo (1979-1988),
and by Optical and Infrared Astronomy Division, National Astronomical
Observatory of Japan (1988-1990).

Files are named as
     KROGyymm.txt
where
     yy: year
     mm: month.

Data Format

example:

                1980   1  21                        <= year,month,date

    DD  HH MM    5577A(R)  5893A(R)  6300A(R)
    21  22 55       83.3      35.0      22.5        <= date,hh,mm  I1 I2 I3
    21  22 56       85.2      35.3      23.4
    21  22 57       79.6      33.3      25.2
    21  22 58       80.6      35.1      21.8
    21  22 59       83.6      35.1      22.9
    21  23  0       85.4      32.2      22.1
    ........................................

The date in the title line refers to the local date of the evening.
The actual observations may be done after midnight, on the next day.

(hh,mm) = time in JST (=UT+9)
I1 = 5577 Angstrom (O I) intensity in Rayleigh *
I2 = 5893          (Na D)
I3 = 6300          (O I)

* 1 Rayleigh = 10^6 photons cm^-2 sec-1 /column