Column assignement of motion_RHB_Calwater2015_doy.txt:

1) DOY
2) x platform velocity (m/s)
3) y platform velocity (m/s)
4) z platform velocity (m/s)
5) x platform displacement (m)
6) y platform displacement (m)
7) z platform displacement (m)
8) roll (rad)
9) pitch (rad)
10) yaw (rad)

x axis is defined as positive towards the bow
y axis is defined as positive towards the portside
z axis is defined as positive upward