Figure 9: The link throughput of mote 4 attached to the right wrist for three incremental transmit powers. Left: the left-side of body is close to the corner; Right: the right-side of body is close to the corner. In experiment the transmit power is changed from −15 to −5 dBm at time 120, and from −5 dBm to 0 dBm at time 240; in this figure, the transmit powers are water-marked by distinct gray scales.