PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-19:27:30
G02     53.6           38.6                9.1 +/-    0.60      13.5 +/-    0.60  0.050 / 0.090
G05     68.5           65.9                8.8 +/-    0.76       9.6 +/-    0.76  0.100 / 0.090
G12     182.1          34.7               11.3 +/-    2.30      18.0 +/-    2.30  0.120 / 0.230
G13     131.9          11.6               14.2 +/-    5.24      38.2 +/-    5.24  0.100 / 0.270
G21     266.6          12.9                9.1 +/-    5.15      23.8 +/-    5.15  0.040 / 0.030
G25     243.8          55.3               10.8 +/-    0.69      12.9 +/-    0.69  0.030 / 0.030
G29     323.9          48.1                9.4 +/-    1.82      12.2 +/-    1.82  0.040 / 0.060