PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-15:42:30
G07     337.4          59.6               15.5 +/-    0.55      17.7 +/-    0.55  0.030 / 0.040
G08     96.0           53.1               17.7 +/-    0.73      21.5 +/-    0.73  0.030 / 0.070
G09     186.9          69.8               18.4 +/-    0.64      19.4 +/-    0.64  0.030 / 0.040
G11     144.1          15.2               17.9 +/-    2.66      44.2 +/-    2.66  0.030 / 0.030
G23     155.3          34.4               18.4 +/-    1.15      29.5 +/-    1.15  0.110 / 0.100
G27     51.8           29.7               14.9 +/-    1.17      26.2 +/-    1.17  0.070 / 0.090
G28     240.2          32.4               19.6 +/-    3.52      32.7 +/-    3.52  0.050 / 0.100
G30     305.0          37.8               16.1 +/-    1.87      24.3 +/-    1.87  0.080 / 0.090