all throughout his voyage pavie recorded empirical lata in great detail: widths,lengths and depths of sections of the mekong and its tributaries; velocity of the waters flow, upstream and Downstream, in dry and wet seasons; meteorological patterns, soil conditions, changes changes in vegetation,and of course,like garnier before him, prospects for navigability of the different sections of the river.ตลอดการเดินทางของเขา