PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/20-13:58:00
G01     269.7          41.5                8.5 +/-    1.87      12.1 +/-    1.87  0.060 / 0.060
G03     316.4          33.4                3.3 +/-    1.27       5.5 +/-    1.27  0.060 / 0.060
G10     129.8          15.6                8.3 +/-    1.99      20.4 +/-    1.99  0.070 / 0.050
G11     248.8          19.3                5.5 +/-    2.96      12.4 +/-    2.96  0.080 / 0.070
G14     44.6           49.2                5.5 +/-    1.36       7.0 +/-    1.36  0.040 / 0.060
G18     230.1          38.2                7.7 +/-    1.16      11.5 +/-    1.16  0.040 / 0.050
G22     314.2          56.1                5.3 +/-    1.25       6.2 +/-    1.25  0.160 / 0.270
G25     50.8           15.4                4.7 +/-    1.46      11.6 +/-    1.46  0.210 / 0.260
G31     58.0           75.6                6.2 +/-    0.43       6.3 +/-    0.43  0.040 / 0.040
G32     61.5           36.1                5.8 +/-    0.91       9.0 +/-    0.91  0.050 / 0.050