PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/14-15:12:30
G03     244.4          70.4               12.8 +/-    0.42      13.5 +/-    0.42  0.100 / 0.250
G09     300.3          14.0                7.3 +/-    1.48      18.7 +/-    1.48  0.130 / 0.270
G14     94.6           20.5                9.6 +/-    1.02      20.8 +/-    1.02  0.050 / 0.060
G16     132.8          55.6               12.3 +/-    0.65      14.6 +/-    0.65  0.050 / 0.060
G22     191.8          57.5               12.3 +/-    0.53      14.3 +/-    0.53  0.040 / 0.040
G23     318.6          48.8                9.2 +/-    0.43      11.7 +/-    0.43  0.040 / 0.050
G26     74.9           52.5               10.1 +/-    1.15      12.4 +/-    1.15  0.030 / 0.040
G31     50.4           21.7                8.5 +/-    3.03      18.0 +/-    3.03  0.030 / 0.050