PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-15:58:10
G02     30.0           57.6                6.5 +/-    0.41       7.6 +/-    0.41  0.050 / 0.050
G05     145.3          61.6                9.7 +/-    0.69      10.8 +/-    0.69  0.040 / 0.050
G06     54.4           14.4                6.7 +/-    2.54      16.9 +/-    2.54  0.030 / 0.060
G12     192.6          65.2                7.5 +/-    1.57       8.2 +/-    1.57  0.030 / 0.050
G19     99.2           12.7                7.8 +/-    1.54      20.5 +/-    1.54  0.030 / 0.040
G25     292.7          56.2                6.7 +/-    1.05       7.9 +/-    1.05  0.020 / 0.030
G29     307.6          28.0                4.1 +/-    0.74       7.4 +/-    0.74  0.140 / 0.230