PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-09:27:50
G01     123.8          12.8                4.6 +/-    2.59      12.1 +/-    2.59  0.030 / 0.040
G07     65.4           67.8                4.7 +/-    0.41       5.1 +/-    0.41  0.020 / 0.030
G08     50.8           41.0                2.4 +/-    0.74       3.5 +/-    0.74  0.140 / 0.290
G09     177.4          33.8                4.7 +/-    1.61       7.6 +/-    1.61  0.120 / 0.260
G11     117.1          37.5                5.8 +/-    0.64       8.7 +/-    0.64  0.080 / 0.090
G13     320.0          14.7                3.5 +/-    2.19       8.8 +/-    2.19  0.080 / 0.080
G17     200.6          14.2                4.3 +/-    2.60      10.9 +/-    2.60  0.100 / 0.220
G18     100.8          17.7                4.4 +/-    1.67      10.2 +/-    1.67  0.100 / 0.200
G28     272.0          48.7                5.7 +/-    2.49       7.3 +/-    2.49  0.060 / 0.040
G30     333.9          61.9                3.9 +/-    0.58       4.4 +/-    0.58  0.040 / 0.070