PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/11-07:28:10
G02     214.1          61.2                8.6 +/-    0.83       9.7 +/-    0.83  0.040 / 0.050
G06     62.7           75.6                5.9 +/-    0.68       6.1 +/-    0.68  0.040 / 0.050
G12     318.0          36.4                3.5 +/-    1.40       5.4 +/-    1.40  0.070 / 0.090
G17     55.9           32.5                3.4 +/-    0.88       5.7 +/-    0.88  0.050 / 0.100
G19     39.2           48.5                4.0 +/-    0.58       5.2 +/-    0.58  0.080 / 0.320
G24     269.2          41.2                6.9 +/-    1.20       9.8 +/-    1.20  0.110 / 0.230
G28     118.7          23.0                6.8 +/-    1.52      13.9 +/-    1.52  0.060 / 0.080