PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/20-13:42:30
G01     220.3          11.7                7.1 +/-    1.60      19.1 +/-    1.60  0.140 / 0.370
G03     246.3          72.3                9.4 +/-    0.60       9.8 +/-    0.60  0.210 / 0.420
G09     298.1          11.4               -6.7 +/-   28.45     -18.3 +/-   28.45  0.040 / 0.030
G14     93.2           18.8                8.5 +/-    1.56      19.3 +/-    1.56  0.040 / 0.030
G16     144.0          50.3                9.9 +/-    0.60      12.5 +/-    0.60  0.040 / 0.050
G22     194.6          60.5                9.8 +/-    0.44      11.1 +/-    0.44  0.040 / 0.060
G23     313.2          43.1                7.6 +/-    1.17      10.6 +/-    1.17  0.110 / 0.220
G26     87.2           55.5                9.5 +/-    1.30      11.2 +/-    1.30  0.110 / 0.220
G31     48.4           26.4                6.9 +/-    3.04      13.0 +/-    3.04  0.170 / 0.290