README: precisions (trx power, etc.)

v1.3.1/README.org

@@ -56,7 +56,10 @@ The following mobile terminals can be used:
 When received by a Fonera 2.0, the default packet size is 103 bytes for
 a positioning request, and 116 bytes for an (auto)calibration request.
 
-Unless stated otherwise, the Fonera is equipped with a 1.8 dBi antenna.
+Unless stated otherwise:
+- the Fonera is equipped with a 1.8 dBi antenna and its transmission
+  power is 18 dBm;
+- the transmission power of the EeePC is 14 dBm.
 
 
 * Common rules
@@ -75,7 +78,8 @@ and each exception made to these rules or to the scenario description.
   squeeze (Linux 2.6.32), with an Atheros AR 500 Wi-Fi interface. It
   runs OwlPS Aggregator v1.3.1-14-ge278aab.
 - Listeners: 4 Fonera 2.0 with 1.8 dBi antennas, running OpenWrt
-  Backfire. They run OwlPS Listener v1.3.0-11-gc4e0352.
+  Backfire. They run OwlPS Listener v1.3.0-11-gc4e0352, and their
+  transmission power is 18 dBm.
 
 ** Network
 
@@ -357,6 +361,9 @@ following order:
 2. hip,
 3. ear.
 
+Alternative procedure (advised for easier use of the measurements): a
+separate aggregation file is made for each point and each altitude.
+
 ** Scenario 7 (altitude & human presence)
 
 Repeat the scenario 6, but with a human operator standing 0.5 m at the
@@ -380,7 +387,7 @@ is the size of the packets:
 - 1450 B.
 This size is the parameter given to OwlPS Client, and is less than the
 size of the radio packet. The size of the packet received at the
-listeners must be written, as it can vary.
+listeners must be written in the report files, as it can vary.
 
 Please refer to the scenario 5 for details and measurement procedure.
 
@@ -423,8 +430,8 @@ points 3, 4 and 5 only) two times:
    points to the West, and the South-West listener's antenna points to
    the East.
 
-#+CAPTION: Scenario 12, test 1.
-#+begin_src ditaa :cmdline -s 2 :file s12-1.png
+#+CAPTION: Scenario 12, antennas in the direction of the opposite wall
+#+begin_src ditaa :cmdline -s 2 :file s12-opposite.png
  +---+ +---+
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@@ -443,8 +450,8 @@ points 3, 4 and 5 only) two times:
  +---+ +---+
 #+end_src
 
-#+CAPTION: Scenario 12, test 2.
-#+begin_src ditaa :cmdline -s 2 :file s12-2.png
+#+CAPTION: Scenario 12, antennas forming a “circle”
+#+begin_src ditaa :cmdline -s 2 :file s12-circle.png
  +---+ +---+
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