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The daily file Day_1923_2018.txt contains a set of daily global radiation and other data for Stockholm.

Most is hopefully selfexplaining but here is a brief format explanation. Each line contains the following

% Header with a brief format. Then for each day:

Date		yyyy-mm-dd
Year		yyyy	
Month		month (1-12)
Day		day
daynumber	1-366
instr		instrument type given as a number.decimal
eta		raw data in the early period	
CF		calibration factor used in the past
Q		original daily global radiation gcal cm-2
best/corr Q 	corrected daily global radiation gcal cm-2 due to rime, mis-calculation or evident errors in the past
toWRR		factor to convert to WRR (World Radimetric Reference)
toWhm-2		factor toi convert to the unit Whm-2	
coscorr-	applied cosine correction for older parts of the series
CF-corr		if the original calibration factor had to bechanged this is the correctionfactor
Gcorr		the corrected daily global radiation Whm-2 (WRR)
status		quality flag 
Srel		observed relative sunshine duration (0-1)
Sdur		observed absolute sunshine duration (hours)
DayLength	length of day (hours), computed in the same way for all years.
Ncloud		fraction of clouds based on three obs from Observatorikullen and weigthed 1-3-1 and normalised to (0-1)
TempDay		daily mean temperature
Gex		extra terrestrial radiation (Whm-2), computed in the same way for all years.
G-cloudmodel	modelled daily global radiation Whm-2 from cloud observations
G-Sdurmodel	modelled daily global radiation Whm-2 from sunshine duration


Weine Josefsson 
February 2019