PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/23-03:57:40
G01     54.3           28.0                1.8 +/-    0.80       3.2 +/-    0.80  0.030 / 0.050
G06     181.1          17.9                4.8 +/-    1.42      11.2 +/-    1.42  0.030 / 0.050
G07     144.7          16.8                5.0 +/-    1.70      11.9 +/-    1.70  0.030 / 0.030
G11     46.6           20.4                1.5 +/-    0.98       3.3 +/-    0.98  0.030 / 0.030
G13     256.8          32.7                2.3 +/-    0.92       3.8 +/-    0.92  0.050 / 0.160
G15     287.4          16.6                2.1 +/-    1.38       5.0 +/-    1.38  0.050 / 0.140
G17     286.1          78.5                4.0 +/-    0.58       4.0 +/-    0.58  0.110 / 0.230
G19     240.3          56.8                3.7 +/-    1.22       4.3 +/-    1.22  0.120 / 0.220
G28     46.3           54.3                2.8 +/-    0.73       3.3 +/-    0.73  0.070 / 0.150
G30     146.4          42.8                6.5 +/-    0.89       9.1 +/-    0.89  0.120 / 0.220