PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-15:27:40
G01     48.3           23.8                7.5 +/-    0.68      15.1 +/-    0.68  0.060 / 0.200
G06     177.3          27.4               10.1 +/-    1.70      18.7 +/-    1.70  0.070 / 0.180
G11     43.6           10.7                8.0 +/-    1.64      22.1 +/-    1.64  0.050 / 0.070
G13     250.4          29.1                9.8 +/-    1.69      17.5 +/-    1.69  0.040 / 0.070
G15     284.4          15.0                9.1 +/-    2.34      22.7 +/-    2.34  0.030 / 0.030
G17     338.7          77.3               10.7 +/-    0.72      11.0 +/-    0.72  0.020 / 0.030
G19     252.7          63.9                9.8 +/-    0.77      10.8 +/-    0.77  0.050 / 0.120
G28     56.1           51.8                9.3 +/-    0.45      11.5 +/-    0.45  0.050 / 0.120
G30     150.8          41.2                9.4 +/-    0.64      13.4 +/-    0.64  0.130 / 0.540