PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-17:57:30
G01     39.9           14.4                8.2 +/-    2.82      20.6 +/-    2.82  0.100 / 0.280
G06     172.8          43.3               10.5 +/-    0.42      14.5 +/-    0.42  0.070 / 0.270
G13     235.4          20.3               10.5 +/-    4.36      23.0 +/-    4.36  0.080 / 0.120
G15     270.4          11.1               11.5 +/-    1.91      31.3 +/-    1.91  0.070 / 0.130
G17     4.2            69.0                9.7 +/-    0.27      10.3 +/-    0.27  0.200 / 0.130
G19     279.8          68.3               10.3 +/-    0.68      11.0 +/-    0.68  0.100 / 0.170
G24     315.3          22.2               10.1 +/-    3.48      21.0 +/-    3.48  0.030 / 0.030
G28     75.0           45.5                9.8 +/-    1.66      13.1 +/-    1.66  0.020 / 0.020
G30     155.4          25.3               10.5 +/-    2.61      20.4 +/-    2.61  0.030 / 0.030