... 0,09% 0 ,58 2,26% 2 Acrilic 25 1,3 1, 05 2,11% 0, 05 0,16% 0,77 2,97% 3 Acrilic 25 1 -0,44 0,88% 0,62 1 ,57 % 0,04 0,14% 4 Acrilic 25 1 -0,64 1,27% 0,24 0,76% 0,11 0,38% 5 Acrilic 20 1 -0 ,55 1,09% ... system. Wireless Sensor Networks Applications via High Altitude Systems 13 Wireless Sensor Networks Applications via High Altitude SystemsZhe Yang and Abbas MohammedX Wireless Sensor Networks ... Average ρ=1 0,10 0,19% 0,02 0, 05% 0,01 0,03% Table 1. Travelling times along pipes for different sensors Emerging Communications for Wireless Sensor Networks2 04. Physical Layer Configuration...