PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-15:27:50
G01     96.5           29.3               10.4 +/-    0.69      18.5 +/-    0.69  0.040 / 0.050
G07     120.3          46.1               10.7 +/-    0.84      14.2 +/-    0.84  0.030 / 0.050
G08     41.8           14.0                8.4 +/-    2.10      21.5 +/-    2.10  0.060 / 0.070
G11     75.5           42.3                8.9 +/-    0.88      12.5 +/-    0.88  0.040 / 0.060
G13     300.7          34.7                8.9 +/-    1.04      14.2 +/-    1.04  0.040 / 0.060
G17     209.8          45.4               11.2 +/-    1.20      15.0 +/-    1.20  0.030 / 0.050
G18     69.0           24.3                9.2 +/-    0.87      18.4 +/-    0.87  0.070 / 0.140
G19     211.1          22.3               10.8 +/-    1.31      22.4 +/-    1.31  0.060 / 0.120
G28     324.5          60.7                9.3 +/-    0.50      10.5 +/-    0.50  0.050 / 0.060
G30     86.7           77.5               10.1 +/-    0.37      10.4 +/-    0.37  0.040 / 0.060