PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-22:12:50
G01     315.1          25.5                7.5 +/-    1.73      14.5 +/-    1.73  0.060 / 0.040
G10     93.2           47.1                9.1 +/-    1.00      11.9 +/-    1.00  0.060 / 0.040
G11     292.8          27.1                9.5 +/-    1.95      17.8 +/-    1.95  0.110 / 0.190
G14     327.0          70.8                9.7 +/-    1.41      10.2 +/-    1.41  0.090 / 0.190
G18     292.2          47.7                9.6 +/-    9.79      12.5 +/-    9.79  0.130 / 0.190
G20     112.9          22.3                9.3 +/-    1.48      19.4 +/-    1.48  0.130 / 0.210
G22     305.1          16.3                8.6 +/-    1.07      20.7 +/-    1.07  0.140 / 0.310
G25     89.2           12.2                9.2 +/-    1.67      24.4 +/-    1.67  0.340 / 0.320
G31     174.4          51.5               11.4 +/-    0.78      14.1 +/-    0.78  0.110 / 0.220
G32     23.2           60.4                8.7 +/-    0.75       9.8 +/-    0.75  0.240 / 0.270