PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-15:28:10
G07     327.9          56.0               16.2 +/-    1.19      19.1 +/-    1.19  0.050 / 0.050
G08     107.1          51.2               18.6 +/-    0.49      23.1 +/-    0.49  0.040 / 0.050
G09     196.4          76.6               18.8 +/-    0.79      19.3 +/-    0.79  0.040 / 0.040
G11     148.2          11.2               11.2 +/-   26.77      30.5 +/-   26.77  0.040 / 0.050
G23     153.2          41.1               19.6 +/-    1.17      28.1 +/-    1.17  0.090 / 0.120
G27     57.9           33.0               14.5 +/-    0.71      24.0 +/-    0.71  0.080 / 0.100
G28     235.1          27.3               19.4 +/-    1.18      36.0 +/-    1.18  0.250 / 0.530
G30     299.8          33.5               16.0 +/-    0.97      26.2 +/-    0.97  0.170 / 0.400