PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/10-17:27:50
G01     118.2          17.8               12.6 +/-    0.88      29.2 +/-    0.88  0.070 / 0.120
G07     90.6           60.9               13.2 +/-    1.10      14.8 +/-    1.10  0.100 / 0.100
G08     44.8           31.2               10.0 +/-    1.44      17.1 +/-    1.44  0.030 / 0.030
G09     177.7          27.1               10.4 +/-    0.96      19.3 +/-    0.96  0.030 / 0.050
G11     105.0          40.7               12.9 +/-    0.75      18.5 +/-    0.75  0.040 / 0.030
G13     317.2          20.5                9.7 +/-    2.99      21.1 +/-    2.99  0.030 / 0.030
G17     201.1          24.7               13.2 +/-    2.97      25.9 +/-    2.97  0.170 / 0.240
G18     91.9           20.8               13.2 +/-    1.50      28.5 +/-    1.50  0.140 / 0.250
G28     286.1          54.3               12.4 +/-    2.21      14.9 +/-    2.21  0.200 / 0.350
G30     352.7          70.7               12.1 +/-    0.94      12.8 +/-    0.94  0.200 / 0.470