PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-00:57:40
G01     84.3           32.9                6.8 +/-    1.02      11.2 +/-    1.02  0.060 / 0.060
G07     129.8          41.4                7.8 +/-    1.46      11.0 +/-    1.46  0.060 / 0.050
G11     66.0           39.4                5.2 +/-    0.67       7.7 +/-    0.67  0.040 / 0.040
G13     289.5          36.8                7.5 +/-    0.73      11.6 +/-    0.73  0.040 / 0.050
G15     311.2          12.6                5.9 +/-    1.85      15.6 +/-    1.85  0.050 / 0.080
G17     219.1          56.7                8.1 +/-    0.86       9.5 +/-    0.86  0.060 / 0.100
G19     217.1          32.0                8.5 +/-    1.74      14.2 +/-    1.74  0.040 / 0.070
G28     0.3            61.2                5.2 +/-    0.74       5.8 +/-    0.74  0.030 / 0.070
G30     120.6          67.7                7.0 +/-    0.87       7.5 +/-    0.87  0.100 / 0.090