PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-09:13:10
G10     297.1          52.2                3.7 +/-    1.61       4.5 +/-    1.61  0.040 / 0.040
G14     209.6          11.7               -4.4 +/-   13.46     -11.7 +/-   13.46  0.030 / 0.030
G15     46.1           27.8                2.6 +/-    1.60       4.8 +/-    1.60  0.060 / 0.070
G20     351.3          65.3                4.2 +/-    0.49       4.6 +/-    0.49  0.070 / 0.040
G21     99.3           71.7                5.6 +/-    0.73       5.9 +/-    0.73  0.090 / 0.110
G24     96.7           26.0                6.1 +/-    0.99      11.5 +/-    0.99  0.140 / 0.140
G27     303.2          32.6                3.5 +/-    0.93       5.8 +/-    0.93  0.210 / 0.360
G32     210.9          26.8                4.6 +/-    1.44       8.7 +/-    1.44  0.110 / 0.420