PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-12:13:00
G01     84.2           32.8               -4.3 +/-   10.39      -7.1 +/-   10.39  0.020 / 0.030
G07     129.8          40.9               -5.7 +/-    9.79      -8.1 +/-    9.79  0.020 / 0.030
G11     61.9           36.4               -3.9 +/-   11.10      -6.1 +/-   11.10  0.060 / 0.060
G13     288.3          37.5               -6.7 +/-    9.49     -10.1 +/-    9.49  0.060 / 0.060
G17     218.3          60.6               -7.3 +/-   10.98      -8.3 +/-   10.98  0.050 / 0.100
G18     58.2           22.2               -3.0 +/-   10.59      -6.2 +/-   10.59  0.070 / 0.110
G19     217.2          28.0               -2.9 +/-   11.68      -5.2 +/-   11.68  0.060 / 0.100
G28     358.2          61.3               -7.8 +/-    9.67      -8.8 +/-    9.67  0.070 / 0.100
G30     116.2          74.2               -7.8 +/-   10.15      -8.0 +/-   10.15  0.180 / 0.190