PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-15:42:30
G07     344.5          61.8               10.2 +/-    0.56      11.5 +/-    0.56  0.150 / 0.410
G08     98.6           51.7                9.6 +/-    1.07      11.8 +/-    1.07  0.160 / 0.300
G09     195.0          74.6                9.7 +/-    0.56      10.0 +/-    0.56  0.040 / 0.040
G11     144.7          14.3               11.5 +/-    1.90      29.2 +/-    1.90  0.040 / 0.040
G23     155.3          40.7               10.9 +/-    1.55      15.6 +/-    1.55  0.130 / 0.370
G27     56.2           32.6                8.1 +/-    1.16      13.4 +/-    1.16  0.200 / 0.470
G28     236.0          25.1               12.3 +/-    1.42      24.0 +/-    1.42  0.030 / 0.030
G30     303.6          37.5                9.1 +/-    1.26      13.8 +/-    1.26  0.030 / 0.030