PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-23:13:00
G01     83.5           33.0               11.4 +/-    1.65      18.8 +/-    1.65  0.070 / 0.080
G07     130.3          41.0               13.4 +/-    0.89      19.2 +/-    0.89  0.070 / 0.080
G11     65.0           39.0               11.6 +/-    0.89      17.2 +/-    0.89  0.040 / 0.040
G13     288.5          37.0               12.1 +/-    1.05      18.6 +/-    1.05  0.060 / 0.040
G15     310.8          12.7               11.1 +/-    1.83      29.3 +/-    1.83  0.050 / 0.050
G17     219.7          55.9               11.9 +/-    1.16      14.0 +/-    1.16  0.050 / 0.050
G19     217.5          32.1               12.0 +/-    1.44      20.1 +/-    1.44  0.060 / 0.090
G28     1.3            61.1               10.3 +/-    0.48      11.5 +/-    0.48  0.050 / 0.090
G30     121.2          68.4               13.8 +/-    0.85      14.8 +/-    0.85  0.030 / 0.050