PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-14:57:40
G01     67.0           32.1                9.8 +/-    0.99      16.4 +/-    0.99  0.050 / 0.130
G07     138.9          25.1               11.6 +/-    0.53      22.5 +/-    0.53  0.040 / 0.110
G11     50.7           25.9                9.2 +/-    1.37      17.7 +/-    1.37  0.050 / 0.080
G13     273.0          36.4               11.4 +/-    1.67      17.6 +/-    1.67  0.050 / 0.080
G15     302.6          14.7                7.0 +/-    1.20      17.5 +/-    1.20  0.040 / 0.040
G17     242.7          74.4               10.8 +/-    0.55      11.1 +/-    0.55  0.030 / 0.040
G19     226.9          47.0               11.7 +/-    0.84      15.3 +/-    0.84  0.030 / 0.040
G28     25.1           58.4               10.6 +/-    0.45      12.2 +/-    0.45  0.030 / 0.040
G30     137.7          61.2               12.1 +/-    0.48      13.6 +/-    0.48  0.080 / 0.140