Channel #	Measurement	Beginning	Instrument		    Pre-	  Post-		Comments	Estimated
				Time Stamp				Calibration    Calibration		       Measurement
														      Uncertainty(%)

    1  	   Direct normal	  87328		Eppley NIP 17828E6	   11-87	   2-88		1.57% change	  ± 3.3
	   (thermopile)			

    2  	   Global normal			None			    --		   --		    --

    3      Global horiz.	  87328		Eppley PSP 17863F3	   11-87	   2-88		2.22% change	  ± 3.7
	   (thermopile)
	   At Welby

	   At SRRL		  88057		Eppley PSP 20079F3	   7-87		   8-88		0.73% change	  ± 2.3

    4  	   Global tilt				None			    --		    --		    --		    --	

    5      Direct normal 			None			    --		    --		    --		    --	
	   (silicon)

    6  	   Temperature		  87328		Taylor Pocket 21430-1	   10-86	(Due 10-91)	    --		± 0.2 (deg)	

    7  	   Pressure				Calc'd from elev.	    --	  	    --		    --		

    8  	   Relative humidity	  87328		Dickson 86100-1		    9-87	   10-88	    --		± 2(counts)	

    9  	   Wind speed				Observation		    --	  	    --		    --		    --
    
   10 	   Albedo		   --		None					

  11-14	 		           --		Sun photometer (relative comparisons only)  --		    --		    --
						

   15  	   Cloud Cover	           --		Observed		    --	   	    --		    --		    --	

   19  	   Global horiz.	   --		LI-COR Pyr. PY1245 	   11-87	   2-88		3.67% change	  ± 2.9
	   (silicon)				(stability monitor only)