PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-12:27:30
G02     338.0          80.0                4.8 +/-    0.39       4.8 +/-    0.39  0.060 / 0.100
G05     166.8          30.1                9.4 +/-    1.41      16.4 +/-    1.41  0.060 / 0.080
G06     40.1           46.3                2.9 +/-    1.12       3.8 +/-    1.12  0.190 / 0.300
G12     314.9          67.2                5.5 +/-    0.72       5.9 +/-    0.72  0.240 / 0.300
G17     85.2           11.3                5.5 +/-    2.21      15.0 +/-    2.21  0.190 / 0.100
G19     73.9           27.5                3.5 +/-    2.20       6.4 +/-    2.20  0.190 / 0.150
G24     231.8          24.8                6.2 +/-    2.01      12.2 +/-    2.01  0.030 / 0.020
G25     317.6          27.6                4.0 +/-    1.68       7.3 +/-    1.68  0.040 / 0.020
G29     286.5          11.7                1.4 +/-   15.90       3.8 +/-   15.90  0.100 / 0.120