Figure 3: Relationship between stopover sites and monthly mean surface temperature (°C), where areas include (1) Qinghai Lake; (2) Eling Lake; (3) Niriagaicuo; (4) Naqu; (5) Yarlung Zangbo River. The horizontal axis denotes longitude in degrees while the vertical axis indicates longitude. The graduated shading represents temperature isotherms from lower (darker shading) to higher (lighter shading) temperature.