PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/24-16:27:50
G01     55.6           28.4                8.2 +/-    1.73      14.9 +/-    1.73  0.040 / 0.050
G07     143.0          14.7                8.3 +/-    4.04      20.8 +/-    4.04  0.040 / 0.050
G11     46.4           20.9                8.8 +/-    2.51      19.0 +/-    2.51  0.220 / 0.210
G13     257.0          34.6               11.2 +/-    1.82      18.0 +/-    1.82  0.150 / 0.240
G15     289.8          16.4                8.8 +/-    1.42      21.2 +/-    1.42  0.150 / 0.420
G17     267.5          77.0               12.0 +/-    0.36      12.2 +/-    0.36  0.170 / 0.420
G18     39.3           9.7                 7.0 +/-    1.67      19.7 +/-    1.67  0.080 / 0.150
G19     236.2          55.1               11.9 +/-    1.85      14.2 +/-    1.85  0.170 / 0.120
G28     32.4           58.4                9.9 +/-    1.00      11.4 +/-    1.00  0.030 / 0.030
G30     145.6          46.1               10.3 +/-    1.19      13.6 +/-    1.19  0.030 / 0.030