PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/30-18:42:40
G07     346.1          62.2                8.8 +/-    0.53       9.8 +/-    0.53  0.040 / 0.040
G08     93.3           51.7                9.6 +/-    0.80      11.8 +/-    0.80  0.040 / 0.040
G09     190.9          72.4               11.5 +/-    0.68      12.0 +/-    0.68  0.070 / 0.090
G11     143.1          15.5               11.9 +/-    3.37      29.3 +/-    3.37  0.080 / 0.100
G16     47.2           9.5                 4.6 +/-    4.31      13.1 +/-    4.31  0.070 / 0.160
G23     156.5          40.3               11.9 +/-    0.72      17.3 +/-    0.72  0.070 / 0.160
G27     54.8           32.0                7.8 +/-    0.92      13.1 +/-    0.92  0.030 / 0.020
G28     237.6          27.3                9.9 +/-    1.36      18.3 +/-    1.36  0.040 / 0.030
G30     304.1          37.3                8.7 +/-    0.90      13.3 +/-    0.90  0.080 / 0.100