PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-16:28:10
G02     212.1          50.9                9.7 +/-    0.79      12.1 +/-    0.79  0.060 / 0.070
G06     75.2           77.0                9.8 +/-    0.58      10.0 +/-    0.58  0.060 / 0.070
G12     317.7          34.6                7.9 +/-    1.54      12.5 +/-    1.54  0.090 / 0.230
G17     52.9           35.4                8.3 +/-    1.23      13.1 +/-    1.23  0.150 / 0.230
G19     26.5           55.9                8.9 +/-    1.19      10.5 +/-    1.19  0.090 / 0.120
G24     272.1          43.0                7.8 +/-    2.01      10.9 +/-    2.01  0.080 / 0.130
G28     118.0          18.6                8.0 +/-    2.70      18.3 +/-    2.70  0.050 / 0.030