PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/19-00:43:10
G02     216.5          62.7               11.2 +/-    0.47      12.4 +/-    0.47  0.050 / 0.070
G06     55.4           73.6               10.0 +/-    0.92      10.3 +/-    0.92  0.030 / 0.090
G12     318.8          36.7                9.2 +/-    1.80      14.2 +/-    1.80  0.040 / 0.050
G19     39.8           49.1                8.6 +/-    0.90      10.9 +/-    0.90  0.050 / 0.050
G24     264.2          41.3               10.3 +/-    1.61      14.7 +/-    1.61  0.120 / 0.390
G28     123.5          12.5               11.5 +/-    2.45      30.4 +/-    2.45  0.140 / 0.450