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                7.7 +/-    1.73      11.0 +/-    1.73  0.130 / 0.170
G03     315.0          27.0                3.9 +/-    1.78       7.4 +/-    1.78  0.130 / 0.190
G10     126.2          21.8                6.3 +/-    0.69      13.2 +/-    0.69  0.060 / 0.050
G11     257.8          22.7                3.4 +/-    2.96       7.0 +/-    2.96  0.060 / 0.050
G14     31.3           56.1                5.0 +/-    0.95       5.9 +/-    0.95  0.060 / 0.200
G18     242.1          43.0                5.9 +/-    1.33       8.2 +/-    1.33  0.090 / 0.230
G22     315.3          51.9                4.7 +/-    0.99       5.8 +/-    0.99  0.050 / 0.080
G25     58.5           18.5                5.5 +/-    1.35      12.5 +/-    1.35  0.050 / 0.060
G31     68.8           76.5                5.3 +/-    0.42       5.5 +/-    0.42  0.050 / 0.070
G32     60.2           34.8                4.9 +/-    1.00       7.8 +/-    1.00  0.040 / 0.050