Converted from a novatel CORRIMUDATA message.
http://docs.ros.org/api/novatel_msgs/html/msg/CORRIMUDATA.html
More information on page 125 of SPAN® on OEM6® Firmware Reference Manual
https://www.novatel.com/assets/Documents/Manuals/OM-20000144UM.pdf

pitch_rate (rad/sample)
roll_rate (rad/sample)
yaw_rate (rad/sample)
x_accel (m/s/sample)
y_accel (m/s/sample)
z_accel (m/s/sample)
