| R# | Serial Number | Calibration Facility | Calibration Date | Date for next Calibration | Responsivity [45] | Responsivity [45:55] | Responsivity [Comp] | Calibration Factor [45] | Instrument::Make | Instrument::Model | Instrument::Description | Instrument::Program | Instrument::Factory Calibration | Instrument::Date of Factory Calibration | Responsivity Bins [2 deg] | Responsivity Bins [9 deg] | Responsivity Function Coefficients | Other Calibrations | Calibration File | Contact Person | Documentation Title | Calibration Method | Calibration Notes | Other Information | Datalogger Entry Date | Responsivity [45] [Corr] | Calibration Factor [45] [Corr] | Responsivity [45:55] [Corr] | Responsivity [Comp] [Corr] | Correction Method |
| 1 | 920056 | NREL/97-04 | 07/14/1997 | 07/14/1998 | Rs=12.350 uV/W/sqm | | | Cf=80.97 W/sqm/mv | Kipp & Zonen | CM21 | Pyranometer | NREL/Program | 12.47 tg/sheet | 08/27/1992 | | | | | | Tom Stoffel | Borcal97-04 | | +/-1.6% | Cal'd:6/95 12.382) | | | | | | |
| 2 | 920056 | NREL/98-03 | 08/07/1998 | 08/07/1999 | Rs=12.337 uV/W/sqm | | | Cf=81.06 W/sqm/mV | Kipp & Zonen | CM21 | Pyranometer | NREL/Program | 12.47 tg/sheet | 08/27/1992 | | | | | | Tom Stoffel | Borcal98-03 | | +/-1.9% | | | | | | | |
| 3 | 920056 | NREL/98-05 | 09/03/1998 | 09/03/1999 | Rs=14.058 uV/W/sqm | | | Cf=71.13 W/sqm/mV | Kipp & Zonen | CM21 | Pyranometer | NREL/Program | 12.47 tg/sheet | 08/27/1992 | | | | | | Tom Stoffel | Borcal98-05 | | +/-1.6% | | | | | | | |
| 4 | 920056 | NREL/Borcal00-03 | 09/12/2000 | 09/12/2001 | Rs = 12.100 µV/W/m² | | | CF = 82.64 W/m²/mV | Kipp & Zonen | CM21 | Pyranometer | NREL/Program | 12.47 tg/sheet | 08/27/1992 | | | | | | Tom Stoffel | Borcal00-03 | | Uncert = ±2.0% | | 11/01/2000 | | | | | |
| 5 | 920056 | SRRL/2003-01 | 07/02/2003 | 07/02/2004 | RS@45=12.142 µV/W/m² ; +1.06/-1.50% ; N=8 | 12.124 µV/W/m² ; ±1.27% | 12.143 µV/W/m² ; +1.39/-6.90% | CF@45=82.359 W/m²/mV | Kipp & Zonen | CM21 | Pyranometer | NREL/Program | 12.47 tg/sheet | 08/27/1992 | [920056_Kipp_&_Zonen_CM21.2deg.txt] | [920056_Kipp_&_Zonen_CM21.9deg.txt] | [920056_Kipp_&_Zonen_CM21.coef.txt] | | | Tom Stoffel | Borcal 2003-01 | | Valid Incident angle range for RS@45: 30-60 | | 08/28/2003 | | | | | |
| 6 | 920056 | SRRL/2005-01 | 05/19/2005 | 05/19/2006 | RS@45=12.053 µV/W/m² ; +1.02/-1.48% ; N=10 | 12.034 µV/W/m² ; ±1.16% | 12.084 µV/W/m² ; +1.23/-6.41% | CF@45=82.965 W/m²/mV | Kipp & Zonen | CM21 | Pyranometer | NREL/Program | 12.47 tg/sheet | 08/27/1992 | [920056_Kipp_&_Zonen_CM21.2deg.txt] | [920056_Kipp_&_Zonen_CM21.9deg.txt] | [920056_Kipp_&_Zonen_CM21.coef.txt] | | | Tom Stoffel | Borcal 2005-01 | | Valid Incident angle range for RS@45: 30-60 | | 06/01/2005 | | | | | |
| 7 | 920056 | SRRL/2007-01 | 06/08/2007 | 06/08/2008 | RS@45=12.139 µV/W/m² ; +0.94/-1.36% ; N=13 ; I:30-60 | 12.120 µV/W/m² ; ±0.97% | 12.109 µV/W/m² ; +1.03/-4.28% | CF@45=82.378 W/m²/mV | Kipp & Zonen | CM21 | Pyranometer | NREL/Program | 12.47 tg/sheet | 08/27/1992 | [920056_Kipp_&_Zonen_CM21.2deg.txt] | [920056_Kipp_&_Zonen_CM21.9deg.txt] | [920056_Kipp_&_Zonen_CM21.coef.txt] | [920056_Kipp_&_Zonen_CM21.lato.txt] | | Tom Stoffel | BORCAL 2007-01 Certificates | | | | 06/28/2007 | n/a ; n/a ; n/a ; I:n/a | n/a | n/a ; n/a | n/a ; n/a | None ; Estimated thermal offset error = -10 W/m² |
| 8 | 920056 | SRRL/2009-01 | 05/27/2009 | 05/27/2010 | RS@45=12.084 µV/W/m² ; +1.19/-1.39% ; N=12 ; I:30-60 | 12.073 µV/W/m² ; ±0.86% | 12.119 µV/W/m² ; +0.94/-1.19% | CF@45=82.756 W/m²/mV | Kipp & Zonen | CM21 | Pyranometer | NREL/Program | 12.47 tg/sheet | 08/27/1992 | [920056_Kipp_&_Zonen_CM21.2deg.txt] | [920056_Kipp_&_Zonen_CM21.9deg.txt] | [920056_Kipp_&_Zonen_CM21.coef.txt] | [920056_Kipp_&_Zonen_CM21.lato.txt] | | Tom Stoffel | BORCAL 2009-01 Certificates | | | | 07/23/2009 | n/a ; n/a ; n/a ; I:n/a | n/a | n/a ; n/a | n/a ; n/a | None ; Estimated thermal offset error = -10 W/m² |
| 9 | 920056 | SRRL/2011-02 | 05/05/2011 | 05/05/2012 | R@45=12.113 µV/W/m² ; +1.32/-1.39% ; N=12 ; Z:30-60 | n/a | n/a | CF@45=82.553 W/m²/mV | Kipp & Zonen | CM21 | Pyranometer | NREL/Program | 12.47 tg/sheet | 08/27/1992 | [920056_Kipp_&_Zonen_CM21.2deg.txt] | | [920056_Kipp_&_Zonen_CM21.coef.txt] | [920056_Kipp_&_Zonen_CM21.lato.txt] | | Tom Stoffel | BORCAL 2011-02 Certificates | | | | 06/09/2011 | R@45=12.113 µV/W/m² ; +1.32/-1.39% ; N=12 ; Z:30-60 | CF@45=82.553 W/m²/mV | n/a | n/a | None ; Rnet=0.0 |