PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-16:13:00
G01     87.3           32.4                9.7 +/-    1.05      16.2 +/-    1.05  0.030 / 0.030
G07     127.7          43.6               12.9 +/-    0.79      17.8 +/-    0.79  0.030 / 0.030
G11     65.8           38.7               10.7 +/-    1.97      15.9 +/-    1.97  0.030 / 0.060
G13     291.6          36.7               11.9 +/-    2.77      18.3 +/-    2.77  0.030 / 0.050
G17     216.6          54.9               14.3 +/-    1.10      17.1 +/-    1.10  0.040 / 0.050
G18     61.3           23.3               10.2 +/-    1.42      20.7 +/-    1.42  0.040 / 0.060
G19     216.0          27.0               12.8 +/-    1.85      24.0 +/-    1.85  0.100 / 0.210
G28     353.9          61.6               11.2 +/-    0.54      12.5 +/-    0.54  0.130 / 0.140
G30     111.2          74.6               13.6 +/-    0.70      14.0 +/-    0.70  0.030 / 0.050