PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/27-11:28:10
G02     214.3          54.8                6.8 +/-    0.80       8.1 +/-    0.80  0.050 / 0.070
G06     67.1           76.7                5.6 +/-    0.48       5.7 +/-    0.48  0.070 / 0.050
G12     317.8          34.5                3.7 +/-    1.84       5.9 +/-    1.84  0.070 / 0.080
G17     56.2           32.3                2.8 +/-    0.72       4.7 +/-    0.72  0.060 / 0.110
G19     31.0           53.8                3.6 +/-    0.63       4.3 +/-    0.63  0.030 / 0.030
G24     264.7          43.0                2.0 +/-    1.76       2.8 +/-    1.76  0.030 / 0.030
G28     120.1          17.2                4.4 +/-    1.70      10.4 +/-    1.70  0.040 / 0.060