PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-22:12:40
G03     217.1          60.3                7.9 +/-    0.60       8.9 +/-    0.60  0.060 / 0.090
G07     255.9          14.8                8.6 +/-    2.43      21.5 +/-    2.43  0.070 / 0.070
G09     311.6          32.2                5.8 +/-    1.56       9.7 +/-    1.56  0.140 / 0.540
G14     107.0          10.3                7.7 +/-    4.60      21.2 +/-    4.60  0.130 / 0.510
G16     95.6           62.8                8.2 +/-    0.41       9.1 +/-    0.41  0.030 / 0.060
G22     191.0          43.5                7.5 +/-    0.91      10.4 +/-    0.91  0.040 / 0.060
G23     328.3          58.3              -16.9 +/-    0.72     -19.5 +/-    0.72  0.070 / 0.210
G26     55.3           44.3                5.4 +/-    0.87       7.4 +/-    0.87  0.130 / 0.200
G31     58.6           11.3                6.5 +/-    2.76      17.6 +/-    2.76  0.040 / 0.040