Dear Prof.

we have a new set of dat on 31 Oct. Due to meteorologic factor,when night fell,radiation fog aways happen in winter at hefei area. After 20:30(LT), due to the fog, it is hard to calibrate the lidar data. So we only have less than 3 hours lidar data on that day. 
Anyway, we can aways get some good data since we have the whole winter time.

guangyu