#time VGT1 VGT2 VGT3 NDVI
08:10:01 0.7542 0.7622 0.7585 -0.00243309
08:20:00 0.7417 0.7539 0.7498 -0.00272661
08:40:01 0.7156 0.7107 0.7055 -0.0036718
ave 0.737167 0.742267 0.737933 -0.00292798