PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-23:43:10
G10     297.3          51.9               10.2 +/-    1.24      12.5 +/-    1.24  0.050 / 0.050
G15     46.7           31.8                6.2 +/-    1.05      10.4 +/-    1.05  0.060 / 0.050
G20     291.6          44.1                4.4 +/-    1.76       6.0 +/-    1.76  0.040 / 0.050
G21     93.3           75.2               10.4 +/-    0.88      10.7 +/-    0.88  0.040 / 0.050
G24     95.8           26.3               11.0 +/-    1.43      20.8 +/-    1.43  0.040 / 0.050
G27     300.9          34.0               10.3 +/-    2.05      16.7 +/-    2.05  0.040 / 0.040
G32     210.1          33.7               12.4 +/-    1.72      20.2 +/-    1.72  0.070 / 0.070