PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/30-19:12:40
G02     199.6          15.0               11.7 +/-    2.58      29.1 +/-    2.58  0.050 / 0.080
G06     173.5          46.3               12.0 +/-    1.22      15.8 +/-    1.22  0.050 / 0.080
G13     230.4          17.3               13.2 +/-    2.37      31.1 +/-    2.37  0.080 / 0.170
G17     13.3           65.0                8.0 +/-    0.90       8.7 +/-    0.90  0.080 / 0.180
G19     304.4          71.8                9.1 +/-    0.76       9.6 +/-    0.76  0.040 / 0.040
G24     313.0          25.5               10.1 +/-    1.88      19.5 +/-    1.88  0.040 / 0.050
G28     76.7           46.9                9.4 +/-    0.41      12.4 +/-    0.41  0.050 / 0.080
G30     155.3          17.2               12.1 +/-    1.70      28.6 +/-    1.70  0.060 / 0.070