PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-17:27:40
G01     124.3          13.1               11.3 +/-    2.78      29.3 +/-    2.78  0.090 / 0.120
G07     75.1           64.7               11.1 +/-    0.67      12.2 +/-    0.67  0.120 / 0.130
G08     48.5           37.2                9.9 +/-    1.25      15.2 +/-    1.25  0.030 / 0.040
G09     178.6          34.7               10.4 +/-    1.06      16.6 +/-    1.06  0.030 / 0.030
G11     114.0          37.5               12.1 +/-    0.68      18.3 +/-    0.68  0.030 / 0.040
G13     320.0          14.7               10.3 +/-    2.14      25.9 +/-    2.14  0.040 / 0.040
G17     199.8          17.5               10.4 +/-    2.34      24.3 +/-    2.34  0.090 / 0.230
G18     99.2           17.8               11.4 +/-    1.59      26.4 +/-    1.59  0.110 / 0.180
G28     274.9          50.7               10.5 +/-    3.56      13.1 +/-    3.56  0.130 / 0.340
G30     339.6          64.7               10.3 +/-    0.41      11.2 +/-    0.41  0.110 / 0.410