PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/17-12:58:10
G01     272.2          41.1                6.2 +/-    2.51       8.8 +/-    2.51  0.050 / 0.060
G03     316.0          31.4                4.8 +/-    1.13       8.2 +/-    1.13  0.060 / 0.060
G10     129.2          17.9                6.0 +/-    3.16      13.9 +/-    3.16  0.210 / 0.200
G11     253.3          20.7                5.4 +/-    5.19      11.7 +/-    5.19  0.210 / 0.100
G14     38.0           53.2                5.3 +/-    1.05       6.4 +/-    1.05  0.180 / 0.440
G18     236.5          40.0                5.9 +/-    1.36       8.6 +/-    1.36  0.180 / 0.450
G22     314.6          56.0                4.3 +/-    1.23       5.1 +/-    1.23  0.050 / 0.030
G25     53.9           17.5                6.1 +/-    5.59      14.3 +/-    5.59  0.070 / 0.020
G31     55.3           72.7                5.3 +/-    0.35       5.5 +/-    0.35  0.070 / 0.040
G32     64.3           31.7                4.0 +/-    1.37       6.7 +/-    1.37  0.060 / 0.040