PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/25-07:13:00
G07     20.7           68.4                5.9 +/-    0.90       6.3 +/-    0.90  0.030 / 0.030
G08     65.6           49.7                6.1 +/-    1.08       7.7 +/-    1.08  0.030 / 0.030
G09     178.2          48.9                8.5 +/-    0.73      10.9 +/-    0.73  0.120 / 0.330
G11     131.9          28.2                5.7 +/-    1.83      10.4 +/-    1.83  0.180 / 0.210
G18     113.9          10.2               -0.9 +/-   21.04      -2.5 +/-   21.04  0.040 / 0.040
G23     159.7          18.6                5.8 +/-    1.53      13.3 +/-    1.53  0.050 / 0.050
G27     40.6           17.5                3.5 +/-    2.01       8.2 +/-    2.01  0.220 / 0.260
G28     253.9          38.8                5.9 +/-    1.29       8.7 +/-    1.29  0.190 / 0.320
G30     318.3          49.1                5.6 +/-    0.83       7.1 +/-    0.83  0.040 / 0.050