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                8.9 +/-    1.51      11.1 +/-    1.51  0.070 / 0.070
G06     75.2           77.0                7.4 +/-    0.34       7.5 +/-    0.34  0.080 / 0.080
G12     317.7          34.6                7.3 +/-    1.22      11.7 +/-    1.22  0.070 / 0.100
G17     52.9           35.4                6.7 +/-    0.47      10.5 +/-    0.47  0.060 / 0.100
G19     26.5           55.9                7.8 +/-    0.40       9.2 +/-    0.40  0.090 / 0.190
G24     272.1          43.0                7.8 +/-    1.06      10.9 +/-    1.06  0.130 / 0.210
G28     118.0          18.6                9.1 +/-    1.09      20.7 +/-    1.09  0.040 / 0.040