marginally significantp ≤0.10
glutamic acid (D), proline (K)} had a marginally significant (0.05< p ≤0.10) positive association with elevation, and ten others { e . g . alanine (A), arginine (B), aspartic acid (C), glycine (E), histidine (F), leucine (H), phenylalanine (J), serine (L), threonine (M), and valine (O)} had not appreciable association with elevation ( p >0.10) ( Fig 4 ).