PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/04-21:28:10
G02     215.9          60.0               15.3 +/-    1.06      17.4 +/-    1.06  0.060 / 0.060
G06     56.9           73.5               13.0 +/-    0.33      13.5 +/-    0.33  0.050 / 0.080
G12     318.9          37.2               11.7 +/-    1.26      17.9 +/-    1.26  0.050 / 0.060
G17     56.0           34.3               12.9 +/-    1.42      20.7 +/-    1.42  0.050 / 0.080
G19     37.0           50.8               13.0 +/-    1.88      16.2 +/-    1.88  0.030 / 0.020
G24     264.9          41.7               15.7 +/-    1.79      22.2 +/-    1.79  0.030 / 0.030
G28     122.6          13.6               15.8 +/-    2.79      40.6 +/-    2.79  0.060 / 0.050