PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-10:12:50
G01     56.1           28.4                2.1 +/-    0.78       3.8 +/-    0.78  0.040 / 0.040
G07     142.8          18.5                5.7 +/-    1.64      12.9 +/-    1.64  0.040 / 0.040
G11     47.4           23.6                2.7 +/-    0.89       5.4 +/-    0.89  0.090 / 0.220
G13     258.0          35.2                5.8 +/-    0.99       9.2 +/-    0.99  0.060 / 0.270
G15     291.6          16.2                3.2 +/-    1.59       7.8 +/-    1.59  0.030 / 0.030
G17     262.3          76.5                5.7 +/-    0.46       5.8 +/-    0.46  0.020 / 0.030
G18     40.2           10.9                2.5 +/-    2.24       6.8 +/-    2.24  0.060 / 0.140
G19     234.8          55.1                5.3 +/-    1.20       6.4 +/-    1.20  0.080 / 0.140
G28     27.2           59.4                3.2 +/-    0.58       3.7 +/-    0.58  0.050 / 0.050
G30     146.0          51.7                6.1 +/-    1.02       7.5 +/-    1.02  0.050 / 0.060