PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/10-12:28:00
G07     325.1          54.9                4.5 +/-    0.46       5.3 +/-    0.46  0.120 / 0.130
G08     107.6          50.0                7.0 +/-    0.68       8.8 +/-    0.68  0.110 / 0.120
G09     196.2          78.0                5.8 +/-    0.64       5.9 +/-    0.64  0.030 / 0.040
G11     148.8          10.1               -4.6 +/-    7.86     -12.9 +/-    7.86  0.030 / 0.050
G23     153.1          45.9                7.4 +/-    1.06       9.9 +/-    1.06  0.050 / 0.070
G27     60.7           34.2                6.3 +/-    1.41      10.2 +/-    1.41  0.050 / 0.060
G28     233.2          25.1                6.6 +/-    3.19      12.9 +/-    3.19  0.030 / 0.060
G30     297.4          31.0                6.4 +/-    1.19      10.9 +/-    1.19  0.040 / 0.060