PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/05-13:28:00
G07     354.7          64.5                6.3 +/-    0.79       6.9 +/-    0.79  0.210 / 0.080
G08     76.6           51.8                6.3 +/-    0.55       7.7 +/-    0.55  0.220 / 0.130
G09     180.1          58.4                8.5 +/-    0.41       9.8 +/-    0.41  0.030 / 0.030
G11     136.9          21.7                7.0 +/-    1.09      14.8 +/-    1.09  0.030 / 0.030
G23     158.3          26.8                7.3 +/-    1.54      13.7 +/-    1.54  0.080 / 0.140
G27     45.1           23.8                6.4 +/-    2.33      12.8 +/-    2.33  0.060 / 0.120
G28     248.9          39.2                7.8 +/-    1.03      11.4 +/-    1.03  0.030 / 0.030
G30     312.1          43.5                5.6 +/-    1.25       7.8 +/-    1.25  0.040 / 0.030