PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/13-16:57:40
G03     192.5          28.7               10.8 +/-    2.65      19.5 +/-    2.65  0.170 / 0.060
G07     280.3          31.2               11.5 +/-    0.95      19.6 +/-    0.95  0.130 / 0.070
G08     152.0          18.0               12.2 +/-    1.57      28.1 +/-    1.57  0.030 / 0.030
G09     320.0          52.0                8.1 +/-    0.53      10.0 +/-    0.53  0.030 / 0.030
G16     46.9           47.3                8.1 +/-    0.57      10.5 +/-    0.57  0.030 / 0.050
G22     177.3          12.1               12.3 +/-    2.93      32.7 +/-    2.93  0.040 / 0.060
G23     71.0           81.4                9.5 +/-    1.58       9.6 +/-    1.58  0.240 / 0.410
G26     42.9           18.5                6.9 +/-    3.80      15.8 +/-    3.80  0.260 / 0.370
G27     110.1          28.8               10.9 +/-    0.76      19.6 +/-    0.76  0.090 / 0.060