PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-13:58:00
G01     48.4           24.2                6.3 +/-    2.36      12.6 +/-    2.36  0.040 / 0.070
G06     175.6          28.9                8.7 +/-    1.36      15.6 +/-    1.36  0.050 / 0.080
G07     146.8          10.5                9.3 +/-    2.63      25.6 +/-    2.63  0.130 / 0.450
G11     43.9           12.2                6.2 +/-    1.76      16.6 +/-    1.76  0.160 / 0.460
G13     248.0          29.3                5.8 +/-    1.86      10.2 +/-    1.86  0.080 / 0.150
G15     285.3          14.4                4.0 +/-    1.39      10.2 +/-    1.39  0.090 / 0.140
G17     332.7          77.7                7.7 +/-    0.55       7.9 +/-    0.55  0.060 / 0.110
G19     247.5          57.9                7.9 +/-    1.11       9.1 +/-    1.11  0.080 / 0.120
G28     55.2           52.2                6.8 +/-    0.66       8.3 +/-    0.66  0.090 / 0.120
G30     151.2          40.9                8.7 +/-    0.88      12.4 +/-    0.88  0.070 / 0.120