PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-03:13:10
G02     73.2           21.2                3.2 +/-    9.43       6.8 +/-    9.43  0.060 / 0.160
G05     45.5           44.2                3.3 +/-   11.08       4.6 +/-   11.08  0.100 / 0.170
G12     182.6          18.2                6.6 +/-   12.02      15.3 +/-   12.02  0.080 / 0.340
G13     112.6          25.7                8.7 +/-   13.12      16.7 +/-   13.12  0.090 / 0.320
G15     153.3          26.8                9.6 +/-   11.63      18.1 +/-   11.63  0.060 / 0.110
G20     226.8          11.9                6.2 +/-   22.42      16.6 +/-   22.42  0.060 / 0.190
G21     286.1          28.5                5.7 +/-   12.90      10.3 +/-   12.90  0.080 / 0.190
G25     217.4          38.2                8.1 +/-   10.62      12.2 +/-   10.62  0.100 / 0.280
G26     318.2          10.7              -16.9 +/-   27.05     -46.5 +/-   27.05  0.030 / 0.050
G29     350.6          74.8                7.3 +/-   10.92       7.6 +/-   10.92  0.040 / 0.090