PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-07:27:50
G01     269.3          40.8                5.9 +/-    2.45       8.5 +/-    2.45  0.040 / 0.070
G03     315.9          30.1                4.2 +/-    1.16       7.3 +/-    1.16  0.050 / 0.050
G10     130.4          15.9                5.1 +/-    1.50      12.4 +/-    1.50  0.040 / 0.050
G11     249.3          19.6                5.3 +/-    2.50      11.9 +/-    2.50  0.060 / 0.050
G14     41.6           51.5                2.8 +/-    0.61       3.5 +/-    0.61  0.040 / 0.070
G18     233.3          38.4                5.5 +/-    1.25       8.3 +/-    1.25  0.070 / 0.080
G22     313.9          54.2                3.6 +/-    1.28       4.3 +/-    1.28  0.130 / 0.290
G25     51.3           16.3                1.5 +/-    4.45       3.6 +/-    4.45  0.120 / 0.280
G31     51.5           70.3                4.1 +/-    0.32       4.3 +/-    0.32  0.110 / 0.190
G32     66.2           30.2                3.5 +/-    1.64       6.2 +/-    1.64  0.150 / 0.160