PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/15-00:42:40
G07     332.5          57.7                3.8 +/-    0.63       4.4 +/-    0.63  0.070 / 0.150
G08     100.8          51.9                9.2 +/-    0.68      11.3 +/-    0.68  0.080 / 0.140
G09     195.0          74.7                5.3 +/-    1.10       5.4 +/-    1.10  0.040 / 0.050
G11     147.2          12.3                6.8 +/-    2.02      18.1 +/-    2.02  0.030 / 0.050
G23     155.3          41.9                8.5 +/-    1.14      12.0 +/-    1.14  0.040 / 0.050
G27     54.6           31.1                6.6 +/-    0.66      11.3 +/-    0.66  0.040 / 0.060
G28     237.4          30.0                5.1 +/-    1.81       9.0 +/-    1.81  0.030 / 0.030
G30     303.5          37.4                5.7 +/-    0.99       8.7 +/-    0.99  0.030 / 0.030