PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/22-21:57:30
G07     328.3          56.1               11.4 +/-    1.22      13.4 +/-    1.22  0.030 / 0.050
G08     107.9          51.3               13.6 +/-    1.13      16.9 +/-    1.13  0.030 / 0.050
G09     201.7          77.3               12.3 +/-    1.14      12.6 +/-    1.14  0.050 / 0.070
G11     150.0          10.4                0.8 +/-   32.95       2.3 +/-   32.95  0.050 / 0.070
G23     153.9          43.1               13.7 +/-    0.99      19.0 +/-    0.99  0.100 / 0.210
G27     57.2           32.5               11.1 +/-    0.83      18.4 +/-    0.83  0.080 / 0.220
G28     235.4          27.9               15.6 +/-    1.94      28.5 +/-    1.94  0.060 / 0.080
G30     302.1          36.6               11.8 +/-    1.86      18.1 +/-    1.86  0.060 / 0.070