PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-21:58:00
G01     318.3          21.0                8.1 +/-    1.86      17.5 +/-    1.86  0.040 / 0.060
G08     257.8          12.9               10.9 +/-    1.57      28.5 +/-    1.57  0.040 / 0.060
G10     82.8           50.6                9.1 +/-    0.75      11.4 +/-    0.75  0.140 / 0.240
G11     303.9          21.7                8.4 +/-    2.64      17.7 +/-    2.64  0.140 / 0.260
G14     290.8          69.2               10.6 +/-    0.56      11.2 +/-    0.56  0.200 / 0.330
G20     107.3          26.5               11.2 +/-    1.82      21.1 +/-    1.82  0.220 / 0.350
G31     174.5          44.0               12.7 +/-    1.14      17.3 +/-    1.14  0.030 / 0.040
G32     12.0           66.2                9.2 +/-    0.39      10.0 +/-    0.39  0.040 / 0.050