PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-06:43:00
G01     248.5          34.1                8.2 +/-    1.57      13.3 +/-    1.57  0.030 / 0.030
G03     315.6          44.9                5.0 +/-    0.64       6.8 +/-    0.64  0.040 / 0.030
G11     234.9          10.8                6.8 +/-    2.26      18.7 +/-    2.26  0.090 / 0.100
G14     61.2           41.1                3.5 +/-    0.80       5.0 +/-    0.80  0.120 / 0.090
G16     159.6          21.8                4.0 +/-    5.28       8.4 +/-    5.28  0.360 / 0.380
G18     219.0          25.7                6.2 +/-    3.69      12.0 +/-    3.69  0.150 / 0.340
G22     300.8          68.3                4.2 +/-    0.63       4.4 +/-    0.63  0.050 / 0.070
G26     131.2          40.6                7.0 +/-    1.77      10.1 +/-    1.77  0.060 / 0.070
G31     41.1           53.7                5.0 +/-    0.73       6.1 +/-    0.73  0.150 / 0.210
G32     80.1           19.9                4.7 +/-    1.92      10.3 +/-    1.92  0.090 / 0.170