PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-07:58:00
G01     93.8           30.8                4.8 +/-    1.14       8.3 +/-    1.14  0.040 / 0.040
G07     122.6          47.1                6.1 +/-    0.58       8.0 +/-    0.58  0.030 / 0.050
G11     72.3           40.0                4.0 +/-    0.83       5.8 +/-    0.83  0.030 / 0.040
G13     299.7          33.7                2.2 +/-    1.45       3.5 +/-    1.45  0.040 / 0.040
G17     212.0          52.3                7.4 +/-    0.55       9.1 +/-    0.55  0.030 / 0.030
G19     213.1          25.6                6.2 +/-    1.93      12.0 +/-    1.93  0.050 / 0.050
G28     344.2          61.8                2.8 +/-    0.53       3.2 +/-    0.53  0.080 / 0.080
G30     90.5           77.7                4.8 +/-    0.23       4.9 +/-    0.23  0.080 / 0.090