PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-09:43:00
G01     319.7          16.9                5.4 +/-    3.16      12.9 +/-    3.16  0.120 / 0.250
G08     259.0          14.4                3.9 +/-    2.02       9.9 +/-    2.02  0.140 / 0.280
G10     77.3           53.2                5.2 +/-    0.56       6.3 +/-    0.56  0.270 / 0.290
G11     304.2          22.6                4.1 +/-    1.54       8.5 +/-    1.54  0.280 / 0.370
G14     291.8          70.8                5.4 +/-    0.97       5.7 +/-    0.97  0.040 / 0.030
G18     305.4          40.8                5.9 +/-    1.82       8.5 +/-    1.82  0.040 / 0.040
G20     103.8          30.3                5.8 +/-    0.92      10.2 +/-    0.92  0.080 / 0.200
G27     226.8          10.7                2.6 +/-   10.77       7.1 +/-   10.77  0.090 / 0.190
G31     176.9          39.1                6.4 +/-    0.84       9.5 +/-    0.84  0.040 / 0.050
G32     349.1          71.2                5.2 +/-    0.72       5.5 +/-    0.72  0.040 / 0.050