PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/28-07:27:50
G01     66.5           31.4                4.7 +/-    1.02       7.9 +/-    1.02  0.040 / 0.040
G07     138.1          28.6                6.5 +/-    1.10      11.8 +/-    1.10  0.040 / 0.040
G11     53.3           32.2                3.6 +/-    1.20       6.1 +/-    1.20  0.060 / 0.110
G13     270.4          38.4                8.2 +/-    0.92      12.3 +/-    0.92  0.070 / 0.110
G15     299.4          16.2                2.2 +/-    2.80       5.4 +/-    2.80  0.060 / 0.120
G17     234.8          70.4                8.5 +/-    1.00       8.9 +/-    1.00  0.060 / 0.110
G19     224.7          46.2                6.7 +/-    0.58       8.9 +/-    0.58  0.060 / 0.140
G28     6.9            61.2                4.0 +/-    0.44       4.5 +/-    0.44  0.060 / 0.120
G30     138.2          63.2                8.3 +/-    0.67       9.2 +/-    0.67  0.050 / 0.070