I found these two pages of other products that list common temperature ranges. They seem to separate into standard/high and wide/low temperatures. Based on the cost of the QUAD, I suspect the standard/high is closer to what can be expected. So I would guess the storage temperature range to be -10C (14F) to +60C (140F).
tstonramp.com/~pddwebacc/lcd_temp_range.htm
americas.kyocera.com/kicc/lcd/no … sider.html
That range is a guess, not an official answer, so it could be and is likely less accurate than it can be.