PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/03-11:12:50
G01     67.1           31.8                2.6 +/-    1.58       4.5 +/-    1.58  0.080 / 0.110
G07     138.0          27.2                5.2 +/-    1.17       9.6 +/-    1.17  0.060 / 0.110
G11     52.5           30.9                2.9 +/-    0.99       5.0 +/-    0.99  0.030 / 0.030
G13     270.6          38.3                5.7 +/-    2.88       8.5 +/-    2.88  0.040 / 0.030
G15     301.8          15.0                0.9 +/-    1.32       2.3 +/-    1.32  0.040 / 0.040
G17     233.6          67.8                6.3 +/-    0.76       6.8 +/-    0.76  0.050 / 0.040
G18     46.8           16.9                2.9 +/-    2.00       6.9 +/-    2.00  0.070 / 0.110
G19     224.7          45.7                5.4 +/-    2.51       7.2 +/-    2.51  0.070 / 0.120
G28     9.1            61.0                3.9 +/-    1.28       4.4 +/-    1.28  0.170 / 0.220
G30     137.8          61.2                5.6 +/-    0.42       6.4 +/-    0.42  0.130 / 0.210