PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-00:12:40
G01     66.0           32.2                8.9 +/-    1.25      15.0 +/-    1.25  0.040 / 0.050
G07     139.7          27.6               11.8 +/-    2.22      21.8 +/-    2.22  0.050 / 0.050
G11     52.6           30.1                7.1 +/-    0.84      12.5 +/-    0.84  0.040 / 0.070
G13     270.0          36.6                8.9 +/-    2.56      13.7 +/-    2.56  0.060 / 0.060
G15     298.3          16.3                7.9 +/-    1.65      19.0 +/-    1.65  0.030 / 0.030
G17     240.2          69.7                9.5 +/-    0.70      10.1 +/-    0.70  0.030 / 0.030
G19     227.6          45.8               10.2 +/-    1.87      13.6 +/-    1.87  0.070 / 0.120
G28     27.8           58.0               11.2 +/-    1.85      13.0 +/-    1.85  0.060 / 0.110
G30     139.0          54.3               11.3 +/-    0.48      13.6 +/-    0.48  0.090 / 0.110