PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-12:27:50
G01     313.8          27.6                4.4 +/-    1.02       8.1 +/-    1.02  0.110 / 0.120
G10     96.0           45.2                4.4 +/-    1.17       5.9 +/-    1.17  0.080 / 0.130
G11     290.6          27.4                6.1 +/-    1.49      11.3 +/-    1.49  0.060 / 0.040
G14     336.1          70.5                4.2 +/-    0.65       4.4 +/-    0.65  0.050 / 0.050
G18     288.2          49.3                3.9 +/-    1.46       5.0 +/-    1.46  0.040 / 0.040
G20     114.6          20.5                3.9 +/-    1.46       8.5 +/-    1.46  0.050 / 0.040
G22     307.3          22.2                3.8 +/-    1.18       8.0 +/-    1.18  0.040 / 0.030
G25     89.4           13.0                4.3 +/-    1.80      11.3 +/-    1.80  0.040 / 0.030
G31     174.6          53.1                7.1 +/-    0.62       8.6 +/-    0.62  0.070 / 0.130
G32     17.9           62.4                4.2 +/-    0.65       4.6 +/-    0.65  0.090 / 0.160