PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/27-16:12:30
G02     34.3           54.2                7.8 +/-    0.25       9.3 +/-    0.25  0.050 / 0.060
G05     137.3          65.4                8.6 +/-    1.11       9.3 +/-    1.11  0.060 / 0.040
G06     56.9           11.2                7.1 +/-    1.82      19.3 +/-    1.82  0.040 / 0.050
G12     189.6          60.1                9.2 +/-    0.95      10.4 +/-    0.95  0.040 / 0.050
G19     102.7          10.0                7.2 +/-    1.82      20.1 +/-    1.82  0.200 / 0.300
G25     284.6          58.2                8.3 +/-    1.33       9.6 +/-    1.33  0.130 / 0.230
G29     310.6          31.3                5.1 +/-    0.90       8.7 +/-    0.90  0.030 / 0.040