PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/08-22:57:40
G01     84.0           32.6                9.5 +/-    0.68      15.8 +/-    0.68  0.040 / 0.060
G07     130.0          36.5               11.1 +/-    0.70      17.1 +/-    0.70  0.040 / 0.060
G11     61.6           36.7                7.9 +/-    0.67      12.1 +/-    0.67  0.100 / 0.140
G13     288.1          37.9                9.0 +/-    0.95      13.5 +/-    0.95  0.080 / 0.100
G15     311.4          12.2                7.0 +/-    1.72      18.6 +/-    1.72  0.030 / 0.030
G17     217.6          60.5               11.2 +/-    0.84      12.7 +/-    0.84  0.030 / 0.030
G18     55.9           20.9                6.7 +/-    0.92      14.4 +/-    0.92  0.120 / 0.100
G19     216.5          31.3               11.7 +/-    1.20      20.0 +/-    1.20  0.110 / 0.100
G28     350.9          61.6                7.1 +/-    0.74       7.9 +/-    0.74  0.040 / 0.080
G30     118.6          72.0               10.8 +/-    0.70      11.3 +/-    0.70  0.040 / 0.090