Kipp & Zonen BREWER MK IV Instruction Manual page 77

UMKEHR FILES: UJJJYY.NNN
As part of the End-of-Day process the Umkehr data in the B file is transferred into a U file which
contains both morning and evening data if it has been collected. This file is used as the input data
for Umkehr processing (see Appendix E).
UV FILES UVJJJYY.NNN
'UV' files contain data from UV scans, Including UV, UX, and UA.
# Example
1 UX integration time is
0.2294 seconds per cycle
2 dt 4.3E-08
3 cy 1
4 Dh
5 26
6 04
7 92
8 Saskatoon
9 52.108
10 106.713
11 2.56
12 Pr
12 960 dark
14 1
15 825.9
16 2865
17 1263
18 11
19
In UX scans, lines 15 to 18 are repeated for wavelengths 286.5nm to 363.0nm in 0.5nm
increments. In UV measurements the scan is from 290.0nm to 325.0nm then back to 290.0nm in
0.5nm increments and the number of cycles is 4 and counts for 4 cycles are recorded in the UV file.
PRODUCED
UVBJJJYY.NNN -
First row - decimal hours from 00:00 (GMT)
First column - wavelength (angstroms)
Other columns : one per scan taken - irradiance (W/m
Second last row - scan weighted (Erythema) UV (mW/m
Last row - scan weighted (Diffey) UV (mW/m
74
Name
(header for each scan).
Dead time
# of cycles
Data header
Day
Month
Year
Location
Latitude
Longitude
Temperature (volts)
Pressure header
Pressure (mb) and dark count header
Dark count
Time (GMT) in minutes for 1st λ
Wavelength for 1st λ
Micrometer step # for 1st λ
Raw counts for 1st λ
Lines 15 to 18 are repeated for each λ
FROM UV SCANS BY AB_UVDAT.EXE
2
/nm)
2
)
MKIV OPERATOR'S MANUAL
2
)