PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-15:43:00
G07     344.5          61.8                9.7 +/-    1.14      10.8 +/-    1.14  0.090 / 0.240
G08     98.6           51.7               10.2 +/-    0.61      12.6 +/-    0.61  0.090 / 0.160
G09     195.0          74.6                8.5 +/-    0.81       8.8 +/-    0.81  0.040 / 0.050
G11     144.7          14.3               10.3 +/-    2.37      26.1 +/-    2.37  0.030 / 0.040
G23     155.3          40.7               11.8 +/-    0.78      17.0 +/-    0.78  0.030 / 0.030
G27     56.2           32.6                8.3 +/-    0.79      13.9 +/-    0.79  0.030 / 0.030
G28     236.0          25.1                9.0 +/-    1.33      17.6 +/-    1.33  0.040 / 0.090
G30     303.6          37.5                8.7 +/-    1.19      13.2 +/-    1.19  0.050 / 0.090