I notice that AVZ assay was released June 30 last year, so...

I notice that AVZ assay was released June 30 last year, so samples may have been taken around April? 4CE was completed late Nov, early Dec. Now, when I look at the average rainfall in Lumbabashi, it is significantly higher at that time of year, and leading up to that time. Although overall AVZ results were better, can we take a positive out of the fact that 4CE samples were taken at a time where they are most likely to be weathered, and still returned Li content. As opposed to AVZ's only 'extremely weathered' trench that returned Zero Li. Unsure if only short term rainfall has such an effect, or if this weathering has occurred over a much larger time frame. Pardon my ignorance, food for thought! Go 4CE!