PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/21-13:42:40
G10     104.4          41.4                5.0 +/-    0.92       7.2 +/-    0.92  0.060 / 0.050
G11     286.4          27.0                3.6 +/-    1.03       6.7 +/-    1.03  0.040 / 0.040
G14     346.1          68.2                3.9 +/-    0.56       4.2 +/-    0.56  0.040 / 0.050
G18     117.1          12.8                4.8 +/-    2.59      12.6 +/-    2.59  0.040 / 0.050
G22     309.9          27.6                3.9 +/-    1.51       7.2 +/-    1.51  0.070 / 0.120
G25     84.6           16.3                5.6 +/-    2.59      13.5 +/-    2.59  0.100 / 0.100
G31     165.3          64.5                7.3 +/-    0.38       8.0 +/-    0.38  0.120 / 0.160
G32     35.9           52.6                4.2 +/-    0.90       5.1 +/-    0.90  0.140 / 0.120