The file "GGP_2019_2023_reflectance.csv" contains ASD measurements at the GGP glacier in Tajikistan.					
- Data format: column(1): date&time, UTC+5; column(2): ID of Measurement; column(3): latitude in decimal degrees; column(4): longitude in decimal degrees; column(5): elevation in meters above sea level; column(6-756): measurement raw value (DN), white reference value, or reflectance with the header row giving the wavelength in nanometers
- column(2): ID of Measurement: ""DN raw"" are the raw 'digital number' measurements of the glacier surface; ""DN white reference raw"" are the corresponding values for reference white surface reflectance made either as white optimization or individual white measurement with the ASD; ""reflectance"" are the corresponding albedo values as ""DN raw"" / ""DN white reference raw"""									
									
Notes of individual measurements									
2019-09-01 13:24	High accumulation zone black-pink impurities								
2019-09-01 14:19	High accumulation zone brownish impurities								
2019-09-01 14:22	High accumulation zone brownish impurities								
2019-09-01 14:23	High accumulation zone black-pink impurities								
2019-09-03 11:37	Low accumulation zone light brown impurities								
2019-09-03 11:42	Low accumulation zone (middle altitude) light brown impurities							
2019-09-03 11:43	Low accumulation zone (middle altitude) light brown impurities							
2019-09-03 11:44	Low accumulation zone (middle altitude) light brown impurities						
2019-09-03 11:45	Low accumulation zone (middle altitude) light brown impurities							
2019-09-03 11:46	Low accumulation zone (middle altitude) light brown impurities							
2019-09-03 11:47	Low accumulation zone (middle altitude) common black spots 50cm diam						
2019-09-03 11:49	Low accumulation zone (middle altitude) common red spots 50cm diam						
2019-09-03 11:50	Low accumulation zone (middle altitude) common red spots 50cm diam						
2023-09-05 12:58	"Whole glacier in ablation. Middle altitude, thin snow cover"							
2023-09-05 13:05	"A triangular dark area, middle altitude about 30-50 m per side"						
2023-09-05 13:14	"Whole glacier in ablation, middle altitude"								
2023-09-05 13:17	"Whole glacier in ablation, middle altitude"								
2023-09-05 13:26	"Whole glacier in ablation, middle altitude"								
2023-09-05 13:35	"Whole glacier in ablation, middle altitude"								
2023-09-06 12:27	"Whole glacier in ablation, low altitude"								
2023-09-06 12:32	"Whole glacier in ablation, low altitude"								
2023-09-06 12:37	"Whole glacier in ablation, low altitude"								
2023-09-06 12:41	"Whole glacier in ablation, low altitude"								
2023-09-06 12:44	"Whole glacier in ablation, middle altitude"								
2023-09-06 12:49	"Whole glacier in ablation, middle altitude"								
2023-09-06 12:53	"Whole glacier in ablation, middle altitude"								
2023-09-06 13:02	"Whole glacier in ablation, middle altitude"								
2023-09-06 13:04	"Whole glacier in ablation, middle altitude"								
2023-09-06 13:07	"Whole glacier in ablation, middle altitude"								
2023-09-06 13:10	"Whole glacier in ablation, middle altitude"								
2023-09-06 13:15	"Whole glacier in ablation, middle altitude"