PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-16:43:10
G07     36.4           69.8               13.6 +/-    0.98      14.4 +/-    0.98  0.040 / 0.070
G08     55.9           44.9               12.6 +/-    0.40      17.0 +/-    0.40  0.040 / 0.080
G09     178.7          41.2               14.2 +/-    1.15      20.2 +/-    1.15  0.030 / 0.040
G11     124.1          32.2               14.4 +/-    0.97      24.0 +/-    0.97  0.030 / 0.040
G18     108.5          14.2               14.3 +/-    2.33      36.3 +/-    2.33  0.050 / 0.040
G27     37.9           10.9               12.0 +/-    1.71      32.8 +/-    1.71  0.050 / 0.060
G28     269.2          50.3               14.2 +/-    0.87      17.8 +/-    0.87  0.050 / 0.090
G30     328.3          57.0               13.1 +/-    0.89      15.3 +/-    0.89  0.050 / 0.080