PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-13:12:40
G10     90.1           49.3                3.6 +/-    1.06       4.6 +/-    1.06  0.040 / 0.040
G11     298.6          24.3                4.1 +/-    1.80       8.2 +/-    1.80  0.040 / 0.040
G14     312.1          70.2                3.6 +/-    0.75       3.8 +/-    0.75  0.090 / 0.140
G18     108.8          21.3               15.7 +/-    7.13      33.5 +/-    7.13  0.120 / 0.150
G22     305.0          18.5                3.5 +/-    2.74       8.0 +/-    2.74  0.150 / 0.280
G25     95.7           11.7                6.5 +/-    1.65      17.5 +/-    1.65  0.120 / 0.250
G31     172.4          51.4                7.2 +/-    0.48       8.9 +/-    0.48  0.060 / 0.060
G32     21.7           61.3                3.9 +/-    0.69       4.4 +/-    0.69  0.150 / 0.120