PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-06:27:40
G10     274.7          42.2                5.3 +/-    1.73       7.5 +/-    1.73  0.040 / 0.050
G13     39.3           13.2                1.4 +/-    1.20       3.7 +/-    1.20  0.040 / 0.050
G15     52.9           43.0                4.3 +/-    0.82       6.0 +/-    0.82  0.080 / 0.130
G20     18.6           63.4                3.3 +/-    0.61       3.6 +/-    0.61  0.120 / 0.170
G21     22.7           75.5                4.2 +/-    0.43       4.3 +/-    0.43  0.070 / 0.060
G24     114.3          18.2                5.2 +/-    1.62      11.9 +/-    1.62  0.070 / 0.060
G27     314.7          24.4                3.2 +/-    2.18       6.3 +/-    2.18  0.120 / 0.300
G29     168.7          24.4                5.4 +/-    0.90      10.8 +/-    0.90  0.120 / 0.260
G32     205.1          17.0                8.3 +/-    4.18      19.6 +/-    4.18  0.060 / 0.180