improve formatting of values for sysid axes

copter/source/docs/systemid-mode-operation.rst

@@ -63,12 +63,26 @@ The IMU chosen for this log is the same IMU used to generate the attitude predic
 Parameters
 ==========
 
-:ref:`SID_AXIS<SID_AXIS>`: Controls which axis and control loop injection point are being excited
-
-Values: 0:None (prevents entry into mode and display of other mode parameters), 1:Input Roll Angle, 2:Input Pitch Angle, 3:Input Yaw Angle, 4:Recovery Roll Angle,
-5:Recovery Pitch Angle, 6:Recovery Yaw Angle, 7:Rate Roll, 8:Rate Pitch, 9:Rate Yaw, 10:Mixer Roll,
-11:Mixer Pitch, 12:Mixer Yaw, 13:Mixer Thrust, 14:Measured Lateral Position, 15:Measured Longitudinal Position,
-16:Measured Lateral Velocity, 17:Measured Longitudinal Velocity, 18:Input Lateral Velocity, 19:Input Longitudinal Velocity
+:ref:`SID_AXIS<SID_AXIS>`: Controls which axis and control loop injection point are being excited:
+
+=====    ===========
+Value    Description
+=====    ===========
+0        None (prevents entry into mode and display of other mode parameters)
+1        Input Roll Angle
+2        Input Pitch Angle
+3        Input Yaw Angle
+4        Recovery Roll Angle,
+5        Recovery Pitch Angle
+6        Recovery Yaw Angle
+7        Rate Roll
+8        Rate Pitch
+9        Rate Yaw
+10       Mixer Roll,
+11       Mixer Pitch
+12       Mixer Yaw
+13       Mixer Thrust
+=====    ===========
 
 :ref:`SID_MAGNITUDE<SID_MAGNITUDE>`: System identification Chirp Magnitude. Depending on the injection point, units will be in either deg, deg/s, 0-1 for mixer outputs, m/s for velocity, and m for position. The magnitude can be changed in flight easily using the :ref:`tuning knob<TUNE>` using the 58 option.