PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-21:43:10
G01     50.6           25.8               11.2 +/-    2.66      21.6 +/-    2.66  0.040 / 0.040
G06     179.8          21.2               17.0 +/-    1.74      36.4 +/-    1.74  0.040 / 0.030
G11     44.4           15.1               10.0 +/-    3.01      24.8 +/-    3.01  0.040 / 0.050
G13     250.7          31.5               12.8 +/-    1.41      21.8 +/-    1.41  0.030 / 0.050
G15     283.9          16.0               11.3 +/-    1.39      27.5 +/-    1.39  0.070 / 0.130
G17     313.8          79.3               13.3 +/-    0.57      13.5 +/-    0.57  0.120 / 0.140
G19     244.2          59.2               14.2 +/-    1.14      16.2 +/-    1.14  0.060 / 0.060
G28     44.7           55.9               12.1 +/-    1.33      14.3 +/-    1.33  0.050 / 0.060
G30     148.9          41.3               14.6 +/-    0.98      20.8 +/-    0.98  0.190 / 0.150