PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-13:57:40
G03     213.1          59.2                9.2 +/-    1.16      10.5 +/-    1.16  0.080 / 0.550
G07     255.4          13.5                8.1 +/-    2.00      20.9 +/-    2.00  0.080 / 0.510
G09     309.3          26.4                5.8 +/-    2.22      10.9 +/-    2.22  0.040 / 0.040
G14     106.9          11.1                5.9 +/-    2.16      16.1 +/-    2.16  0.040 / 0.060
G16     97.2           63.8                8.0 +/-    0.91       8.8 +/-    0.91  0.030 / 0.050
G22     185.1          40.5                8.1 +/-    1.54      11.7 +/-    1.54  0.040 / 0.050
G23     334.2          62.2                7.7 +/-    0.80       8.6 +/-    0.80  0.030 / 0.050
G26     54.1           43.1                7.3 +/-    1.05      10.1 +/-    1.05  0.030 / 0.040