Interpreting QCFIT Plots



Three scatter plots are presented for each site-month of data based on daily solar position:

RangesAir MassZenith Angle
Low1.00 - 1.250 - 36.96
Medium1.25 - 2.5036.96 - 66.57
High2.50 - 5.7666.57 - 80.00
d = [INT(flag + 2)/4]/100
(for flags 10 - 93*)


*The first 3 flags (01 through 03) indicate the data passed 1-, 2-, or 3-component tests. The next 3 flags (04 through 06) are not used by SERI_QC. Flags 07 and 08 indicate data below or above empirical limits, respectively. Flag 09 is assigned to data that are considered "Strange, but true." Data that are physically impossible (DNI > 0 and DS = 0) are flagged 94 through 98. Missing data are flagged "99."



[NREL] [MIDC]