PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-10:58:00
G01     256.8          38.6                4.6 +/-    0.94       6.8 +/-    0.94  0.030 / 0.040
G03     317.0          42.7                2.9 +/-    1.31       4.0 +/-    1.31  0.040 / 0.040
G11     241.2          14.5                3.5 +/-    1.16       8.8 +/-    1.16  0.060 / 0.120
G14     54.4           43.8                2.8 +/-    0.73       3.8 +/-    0.73  0.060 / 0.090
G18     223.0          31.3                3.3 +/-    0.61       5.6 +/-    0.61  0.070 / 0.090
G22     309.0          64.7                3.2 +/-    0.92       3.5 +/-    0.92  0.070 / 0.080
G25     44.1           12.6                1.5 +/-    1.36       3.9 +/-    1.36  0.050 / 0.100
G26     143.3          32.5                5.4 +/-    1.63       9.0 +/-    1.63  0.050 / 0.080
G31     44.0           64.4                2.7 +/-    0.37       2.9 +/-    0.37  0.140 / 0.290
G32     70.1           29.9                3.0 +/-    0.62       5.2 +/-    0.62  0.150 / 0.320