PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-17:57:40
G01     39.9           14.4                8.5 +/-    2.21      21.5 +/-    2.21  0.080 / 0.190
G06     172.8          43.3               11.4 +/-    1.10      15.7 +/-    1.10  0.080 / 0.170
G13     235.4          20.3               10.9 +/-    1.21      23.9 +/-    1.21  0.060 / 0.140
G15     270.4          11.1               11.1 +/-    1.04      30.3 +/-    1.04  0.070 / 0.150
G17     4.2            69.0               10.2 +/-    0.32      10.9 +/-    0.32  0.050 / 0.050
G19     279.8          68.3                9.0 +/-    0.47       9.7 +/-    0.47  0.040 / 0.040
G24     315.3          22.2                8.5 +/-    1.56      17.8 +/-    1.56  0.100 / 0.240
G28     75.0           45.5               10.8 +/-    0.63      14.4 +/-    0.63  0.110 / 0.200
G30     155.4          25.3               11.2 +/-    1.22      21.8 +/-    1.22  0.080 / 0.210