55 2160
McElroy, Tom;Midwinter, Clive;Barton, David;Hall, Bob;Kerr, James;Wardle, David
ENVIRONMENT CANADA, Dowsview, Ontario, CANADA  M3H 5T4    (416) 739-4630
Brewer Ozone Spectrophotometer data at Barbers Point  (  21.31,  158.07)
STRAT
1 1
1996 08 05 1996 08 05
0
13
elapsed time in UT seconds from 0000 hours on the day given in DATE
Station name
9
1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
99 99 99 999 999 999 999 999 999
hour
minute
second
airmass
ozone        [DU]  (Dobson Units)
ozone error  [DU]  (Dobson Units)
SO2          [DU]  (Dobson Units)
SO2 error    [DU]  (Dobson Units)
Number of data points in row
9
0
1  1  1  1  1  1  1  1  1
99 9999 999 999 99999 999 999 999 999
number of observations
instrument number
station latitude (degrees)
station longitude (degrees)
station elevation (m)
daily mean O3        [DU] (Dobson Units)
daily mean O3 error  [DU] (Dobson Units)
daily mean SO2       [DU] (Dobson Units)
daily mean SO2 error [DU] (Dobson Units)
1
*** preliminary data ***
16
The Brewer Ozone Spectrophotometer is a 15-cm focal-length, modified
Ebert-Fastie spectrograph which makes rapid, time-multiplexed
measurements in the UV-B region of the solar spectrum.  A typical
direct sun observation is the average of 5 separate observations.
If the standard deviation of the measurements is less than 2 DU, the
measurement is taken as acceptable.  If the standard deviation is larger,
it is interpreted as indicating variability of the solar intensity, i.e.:
clouds or other optical attenuation.  Each of the five ozone
measurements which contributes to the average value are composed of 40 
short observation samples.  A cycle of 2 samples on each of the five 
wavelengths takes place in about 1.2 seconds.  The usual measurement of 
20 cycles takes under 30 seconds.  Daily averages are calcluted using 
all good observations and are reported as the last line in the data 
table.


Barbers Point 
39 009   21.31  158.07     0.0  286.9    2.9   -1.6    0.9
64358   17 52 38  2.520  282.1     0.6   -0.6     0.3     5
65010   18 03 30  2.295  283.3     1.3   -0.7     0.3     5
65520   18 12 00  2.147  283.8     0.8   -0.6     0.3     5
66034   18 20 34  2.018  283.9     1.9   -0.3     0.5     5
67103   18 38 23  1.799  283.9     1.6   -0.6     0.2     5
67752   18 49 12  1.691  281.1     4.9    0.2     1.3     5
68261   18 57 41  1.617  286.3     1.3   -1.2     0.4     5
69454   19 17 34  1.472  286.5     2.1   -1.3     0.4     5
70389   19 33 09  1.381  288.4     2.8   -1.6     0.6     5
70911   19 41 51  1.337  286.6     1.5   -1.4     0.5     5
72105   20 01 45  1.252  286.6     1.5   -1.6     0.3     5
72311   20 05 11  1.239  286.9     1.6   -1.6     0.4     5
73356   20 22 36  1.182  286.3     1.8   -1.6     0.5     5
73863   20 31 03  1.157  286.6     1.5   -1.8     0.3     5
75101   20 51 41  1.107  288.3     1.0   -2.2     0.2     5
76149   21 09 09  1.074  291.1     0.9   -2.7     0.3     5
77846   21 37 26  1.035  290.3     2.6   -2.6     0.8     5
78052   21 40 52  1.031  290.0     1.2   -2.8     0.5     5
79098   21 58 18  1.016  293.5     0.4   -3.4     0.2     5
79604   22 06 44  1.011  291.3     1.8   -2.9     0.4     5
81117   22 31 57  1.003  286.8     1.5   -2.1     0.6     5
81327   22 35 27  1.003  284.3     2.0   -1.9     0.5     5
82400   22 53 20  1.005  290.2     2.2   -3.0     0.6     5
85230   23 40 30  1.037  291.1     1.9   -3.1     0.5     5
86421   24 00 21  1.063  289.3     0.5   -2.5     0.2     5
86631   00 03 51  1.069  289.3     1.7   -2.3     0.5     5
87678   00 21 18  1.100  287.3     1.8   -1.8     0.4     5
88185   00 29 45  1.118  287.8     1.3   -1.8     0.4     5
89372   00 49 32  1.169  286.8     1.0   -1.5     0.3     5
89578   00 52 58  1.179  286.3     2.6   -1.4     0.9     5
90623   01 10 23  1.236  286.4     1.8   -1.3     0.3     5
91135   01 18 55  1.269  285.2     3.2   -1.0     0.8     5
92331   01 38 51  1.359  287.6     1.9   -1.1     0.4     5
93270   01 54 30  1.446  288.0     1.1   -1.3     0.5     5
93780   02 03 00  1.501  285.9     0.6   -0.9     0.2     5
94854   02 20 54  1.637  284.0     1.1   -0.5     0.4     5
95793   02 36 33  1.786  282.8     0.7   -0.1     0.2     5
96304   02 45 04  1.881  281.6     0.7    0.1     0.2     5
100072   03 47 52  3.240  275.9     0.4   -0.5     0.2     5