PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/04-03:28:00
G10     246.2          22.8               11.0 +/-    2.37      22.5 +/-    2.37  0.110 / 0.290
G13     58.9           32.7                8.8 +/-    1.66      14.6 +/-    1.66  0.100 / 0.380
G15     98.5           57.9                9.9 +/-    0.55      11.4 +/-    0.55  0.050 / 0.050
G16     300.0          15.7                5.7 +/-    1.64      13.9 +/-    1.64  0.040 / 0.040
G20     270.7          56.7               11.2 +/-    1.16      13.1 +/-    1.16  0.070 / 0.130
G21     326.8          56.0                8.7 +/-    0.43      10.3 +/-    0.43  0.060 / 0.150
G26     271.5          17.6                9.3 +/-    1.86      21.6 +/-    1.86  0.030 / 0.030
G29     163.6          56.8               10.4 +/-    0.49      12.1 +/-    0.49  0.040 / 0.030