PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/12-09:58:00
G01     312.6          28.3                6.5 +/-    0.86      11.7 +/-    0.86  0.040 / 0.050
G10     98.1           45.1                6.1 +/-    0.72       8.3 +/-    0.72  0.040 / 0.070
G11     290.9          26.8                4.5 +/-    1.43       8.5 +/-    1.43  0.110 / 0.240
G14     324.8          69.5                5.8 +/-    0.57       6.1 +/-    0.57  0.090 / 0.210
G18     289.5          47.3                6.2 +/-    1.27       8.1 +/-    1.27  0.090 / 0.220
G22     308.1          24.5                4.3 +/-    1.43       8.5 +/-    1.43  0.070 / 0.210
G25     89.8           14.3                3.1 +/-    1.26       7.7 +/-    1.26  0.040 / 0.040
G31     168.3          58.9                7.1 +/-    0.80       8.2 +/-    0.80  0.030 / 0.050
G32     30.3           56.2                3.9 +/-    0.34       4.6 +/-    0.34  0.090 / 0.170