PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-20:27:40
G10     248.3          25.0               10.2 +/-    1.69      19.8 +/-    1.69  0.050 / 0.070
G13     55.9           31.1                9.1 +/-    0.86      15.6 +/-    0.86  0.060 / 0.070
G15     102.5          59.9                9.9 +/-    0.73      11.3 +/-    0.73  0.160 / 0.680
G16     297.7          15.7                8.4 +/-    2.79      20.6 +/-    2.79  0.150 / 0.530
G20     266.2          49.0                9.7 +/-    1.12      12.3 +/-    1.12  0.070 / 0.180
G21     330.6          58.3                9.3 +/-    0.72      10.8 +/-    0.72  0.060 / 0.170
G26     270.1          16.6                9.8 +/-    1.73      23.6 +/-    1.73  0.030 / 0.040
G29     164.0          53.6               11.7 +/-    0.88      14.1 +/-    0.88  0.040 / 0.050