PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-09:43:00
G01     226.1          16.8                2.1 +/-    3.04       5.1 +/-    3.04  0.100 / 0.270
G03     286.2          67.8                4.0 +/-    0.46       4.3 +/-    0.46  0.100 / 0.270
G14     85.6           26.7                3.1 +/-    1.60       5.9 +/-    1.60  0.050 / 0.050
G16     143.3          46.5                5.3 +/-    0.73       7.0 +/-    0.73  0.040 / 0.050
G22     210.2          69.5                4.0 +/-    0.80       4.2 +/-    0.80  0.110 / 0.200
G23     308.9          39.5                2.3 +/-    0.95       3.3 +/-    0.95  0.130 / 0.200
G26     92.9           53.6                5.3 +/-    0.42       6.4 +/-    0.42  0.040 / 0.050
G31     46.0           29.7                1.7 +/-    1.32       2.9 +/-    1.32  0.040 / 0.060