PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/21-12:42:30
G02     65.2           26.9                4.0 +/-    2.12       7.5 +/-    2.12  0.040 / 0.030
G05     52.4           58.7                6.3 +/-    0.58       7.2 +/-    0.58  0.040 / 0.030
G12     180.7          24.3                6.1 +/-    1.05      12.2 +/-    1.05  0.120 / 0.170
G13     121.5          18.9                5.6 +/-    1.76      12.6 +/-    1.76  0.120 / 0.160
G15     158.1          18.8                5.2 +/-    1.00      11.7 +/-    1.00  0.030 / 0.040
G21     276.9          21.2                4.5 +/-    1.92       9.6 +/-    1.92  0.030 / 0.040
G25     228.6          47.6                7.1 +/-    3.90       9.3 +/-    3.90  0.190 / 0.520
G29     332.0          59.4                4.5 +/-    0.55       5.1 +/-    0.55  0.490 / 0.500