PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-22:27:50
G01     83.5           33.0                9.9 +/-    1.93      16.3 +/-    1.93  0.100 / 0.270
G07     130.3          41.0               11.9 +/-    0.85      17.0 +/-    0.85  0.240 / 0.300
G11     64.6           38.7                9.2 +/-    0.63      13.7 +/-    0.63  0.060 / 0.100
G13     288.4          37.0               10.2 +/-    0.92      15.6 +/-    0.92  0.050 / 0.100
G15     310.9          12.6                9.3 +/-    1.38      24.5 +/-    1.38  0.040 / 0.050
G17     219.8          55.2               12.0 +/-    1.28      14.2 +/-    1.28  0.030 / 0.070
G18     58.8           22.7                8.9 +/-    1.58      18.4 +/-    1.58  0.030 / 0.030
G19     217.5          31.9               12.2 +/-    2.32      20.6 +/-    2.32  0.030 / 0.030
G28     1.2            61.1                9.4 +/-    0.56      10.6 +/-    0.56  0.040 / 0.050
G30     121.0          68.9               12.5 +/-    0.55      13.3 +/-    0.55  0.040 / 0.060