PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-05:58:10
G01     286.7          40.9                4.0 +/-    1.81       5.8 +/-    1.81  0.060 / 0.070
G03     312.9          18.9                3.6 +/-    0.94       8.0 +/-    0.94  0.060 / 0.080
G10     122.2          26.0                5.3 +/-    0.88      10.0 +/-    0.88  0.040 / 0.050
G11     261.2          24.9                7.0 +/-    1.81      13.7 +/-    1.81  0.040 / 0.050
G14     25.4           58.3                4.2 +/-    0.48       4.8 +/-    0.48  0.090 / 0.230
G18     248.2          46.1                6.4 +/-    1.26       8.5 +/-    1.26  0.100 / 0.250
G22     314.4          41.8                4.2 +/-    1.40       5.9 +/-    1.40  0.060 / 0.100
G25     63.2           18.5                2.5 +/-    0.61       5.7 +/-    0.61  0.060 / 0.100
G31     96.1           78.9                5.8 +/-    0.75       5.9 +/-    0.75  0.040 / 0.080
G32     55.3           38.3                3.9 +/-    0.91       5.8 +/-    0.91  0.050 / 0.090