double[] frame0 = poses[0].ToArray<double>();
for (int i = 0; i < 10; i++)
{
int joint = i / 3;
int axis = i % 3;
Debug.Log($"joint[{joint}] axis[{axis}] = {frame0[i]:F4}");
}

joint[0] axis[0] = 1.5725
UnityEngine.Debug:Log (object)
AMASSLoader:Start () (at Assets/Scripts/AMASSLoader.cs:38)

joint[0] axis[1] = -0.0347
UnityEngine.Debug:Log (object)
AMASSLoader:Start () (at Assets/Scripts/AMASSLoader.cs:38)

joint[0] axis[2] = -0.0641
UnityEngine.Debug:Log (object)
AMASSLoader:Start () (at Assets/Scripts/AMASSLoader.cs:38)

joint[1] axis[0] = -0.0171
UnityEngine.Debug:Log (object)
AMASSLoader:Start () (at Assets/Scripts/AMASSLoader.cs:38)

joint[1] axis[1] = -0.0192
UnityEngine.Debug:Log (object)
AMASSLoader:Start () (at Assets/Scripts/AMASSLoader.cs:38)

joint[1] axis[2] = 0.0115
UnityEngine.Debug:Log (object)
AMASSLoader:Start () (at Assets/Scripts/AMASSLoader.cs:38)

joint[2] axis[0] = -0.0749
UnityEngine.Debug:Log (object)
AMASSLoader:Start () (at Assets/Scripts/AMASSLoader.cs:38)

joint[2] axis[1] = -0.0019
UnityEngine.Debug:Log (object)
AMASSLoader:Start () (at Assets/Scripts/AMASSLoader.cs:38)

joint[2] axis[2] = 0.0208
UnityEngine.Debug:Log (object)
AMASSLoader:Start () (at Assets/Scripts/AMASSLoader.cs:38)

joint[3] axis[0] = 0.0671
UnityEngine.Debug:Log (object)
AMASSLoader:Start () (at Assets/Scripts/AMASSLoader.cs:38)