PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-13:58:00
G01     118.4          18.4               10.6 +/-    1.56      24.2 +/-    1.56  0.030 / 0.040
G07     82.5           66.2               11.1 +/-    0.36      12.0 +/-    0.36  0.030 / 0.040
G08     44.5           30.4                8.2 +/-    0.87      14.2 +/-    0.87  0.110 / 0.340
G09     175.8          23.8               10.4 +/-    1.20      20.9 +/-    1.20  0.150 / 0.280
G11     105.1          40.3               11.0 +/-    0.69      16.0 +/-    0.69  0.040 / 0.080
G13     317.2          20.2                7.7 +/-    2.55      16.9 +/-    2.55  0.040 / 0.090
G17     201.9          25.2               10.1 +/-    0.88      19.7 +/-    0.88  0.020 / 0.040
G18     93.1           21.1               10.4 +/-    1.46      22.2 +/-    1.46  0.030 / 0.040
G28     294.0          57.6                9.4 +/-    0.82      11.0 +/-    0.82  0.040 / 0.060
G30     346.4          68.8                9.4 +/-    0.85      10.0 +/-    0.85  0.050 / 0.060