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Table 1 Information on the flight campaigns: date of image collection, the illumination condition, and the time-span of image acquisition

From: The impact of variable illumination on vegetation indices and evaluation of illumination correction methods on chlorophyll content estimation using UAV imagery

Date

Illumination condition

Collection time

14-August-2021

No cloud (sunny)

12:01–12:10

15-August-2021

Partly-cloudy (variable)

11:48–11:56

16-August-2021

Cloudy

12:15–12:23