PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-09:58:00
G01     317.5          21.2                3.6 +/-    2.12       7.6 +/-    2.12  0.040 / 0.050
G08     256.9          11.1                4.6 +/-    5.30      12.6 +/-    5.30  0.040 / 0.060
G10     85.9           51.0                4.3 +/-    0.90       5.4 +/-    0.90  0.300 / 0.250
G11     300.4          23.9                3.3 +/-    2.49       6.6 +/-    2.49  0.180 / 0.210
G14     297.9          69.0                3.4 +/-    0.77       3.6 +/-    0.77  0.210 / 0.410
G18     301.2          42.4                5.3 +/-    1.93       7.4 +/-    1.93  0.230 / 0.340
G22     304.0          17.8                1.9 +/-    3.62       4.4 +/-    3.62  0.070 / 0.180
G25     98.4           10.2               -0.5 +/-   23.16      -1.5 +/-   23.16  0.060 / 0.170
G31     172.8          48.5                4.7 +/-    1.16       6.1 +/-    1.16  0.220 / 0.390
G32     18.2           63.2                4.0 +/-    0.58       4.4 +/-    0.58  0.140 / 0.260