PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/07-17:27:50
G01     93.3           31.1               11.8 +/-    0.76      20.2 +/-    0.76  0.140 / 0.360
G07     122.9          48.2               12.3 +/-    0.93      15.8 +/-    0.93  0.120 / 0.380
G08     42.2           10.9                9.1 +/-    2.11      24.8 +/-    2.11  0.040 / 0.050
G11     72.3           41.0               11.4 +/-    0.55      16.3 +/-    0.55  0.030 / 0.070
G13     297.6          35.1               12.4 +/-    1.02      19.7 +/-    1.02  0.060 / 0.070
G17     213.1          48.8               14.6 +/-    1.10      18.7 +/-    1.10  0.040 / 0.070
G18     66.7           24.4                9.9 +/-    0.90      19.6 +/-    0.90  0.030 / 0.040
G19     213.7          22.8               13.7 +/-    1.04      28.2 +/-    1.04  0.030 / 0.030
G28     344.0          61.9               10.7 +/-    0.60      11.9 +/-    0.60  0.040 / 0.100
G30     94.3           77.6               11.8 +/-    0.99      12.1 +/-    0.99  0.040 / 0.080