PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/22-12:27:50
G01     278.9          41.4                3.7 +/-    1.42       5.2 +/-    1.42  0.060 / 0.050
G03     315.0          27.0                2.0 +/-    1.50       3.8 +/-    1.50  0.050 / 0.060
G10     126.2          21.8                6.8 +/-    1.36      14.3 +/-    1.36  0.050 / 0.100
G11     257.8          22.7                2.1 +/-    2.28       4.3 +/-    2.28  0.050 / 0.080
G14     31.3           56.1                2.9 +/-    0.77       3.5 +/-    0.77  0.110 / 0.120
G18     242.1          43.0                6.2 +/-    0.87       8.6 +/-    0.87  0.100 / 0.100
G22     315.3          51.9                3.9 +/-    0.80       4.8 +/-    0.80  0.060 / 0.090
G25     58.5           18.5                4.2 +/-    0.75       9.7 +/-    0.75  0.060 / 0.090
G31     68.8           76.5                4.2 +/-    0.81       4.3 +/-    0.81  0.170 / 0.280
G32     60.2           34.8                3.4 +/-    0.85       5.5 +/-    0.85  0.090 / 0.330