sample 5 is white leather
parameters are p = 19, l = 161
blue gain -20
red gain +5

setting aperture to just above 5.6

12.10pm start calibration: photometer integration time 5 sec

12:25pm calibration finished (everything) start measurements

pos 2: 4 folds
pos 3: 4 folds
at most positions put a fold under maybe to correct for the sample 
being glued too high on the wooden plate.

1:45pm finished