PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-14:12:50
G10     273.6          41.4                4.3 +/-    1.61       6.1 +/-    1.61  0.140 / 0.150
G13     39.8           14.4                4.6 +/-    3.15      11.7 +/-    3.15  0.140 / 0.110
G15     52.8           42.3                5.9 +/-    1.22       8.2 +/-    1.22  0.180 / 0.160
G18     320.8          67.0                3.2 +/-    0.55       3.4 +/-    0.55  0.110 / 0.150
G20     56.8           33.9                5.1 +/-    1.78       8.3 +/-    1.78  0.120 / 0.120
G21     37.1           75.4                5.8 +/-    0.40       6.0 +/-    0.40  0.060 / 0.080
G24     116.1          17.6                8.5 +/-    1.79      19.8 +/-    1.79  0.030 / 0.030
G27     314.7          24.5                2.7 +/-    1.78       5.2 +/-    1.78  0.030 / 0.060
G29     167.2          22.1                7.8 +/-    1.42      16.4 +/-    1.42  0.380 / 0.350
G32     205.5          14.7                4.4 +/-    3.85      10.9 +/-    3.85  0.330 / 0.200