PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-15:43:00
G01     74.2           33.2                7.5 +/-    0.88      12.3 +/-    0.88  0.040 / 0.030
G07     135.7          33.7               11.1 +/-    0.99      18.0 +/-    0.99  0.030 / 0.030
G11     55.5           32.3                6.9 +/-    1.56      11.5 +/-    1.56  0.060 / 0.090
G13     278.0          37.9               10.9 +/-    1.11      16.4 +/-    1.11  0.070 / 0.070
G15     307.0          13.4                8.0 +/-    2.28      20.6 +/-    2.28  0.050 / 0.100
G17     228.5          66.1               11.1 +/-    0.92      12.0 +/-    0.92  0.050 / 0.110
G18     51.2           19.4                7.8 +/-    3.36      17.5 +/-    3.36  0.120 / 0.230
G19     222.1          36.6               12.7 +/-    1.88      19.6 +/-    1.88  0.080 / 0.150
G28     14.3           60.0               10.8 +/-    1.39      12.3 +/-    1.39  0.060 / 0.100
G30     132.1          65.4               10.3 +/-    0.77      11.2 +/-    0.77  0.260 / 0.280