PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/29-18:57:50
G07     307.3          46.4               12.0 +/-    1.36      15.9 +/-    1.36  0.070 / 0.060
G08     132.6          40.2               16.2 +/-    0.95      23.4 +/-    0.95  0.050 / 0.050
G09     301.9          78.4               11.9 +/-    0.21      12.1 +/-    0.21  0.030 / 0.050
G16     42.1           23.0               10.2 +/-    1.90      20.9 +/-    1.90  0.030 / 0.050
G23     144.0          59.3               14.2 +/-    0.42      16.2 +/-    0.42  0.150 / 0.150
G27     77.4           37.0               12.6 +/-    0.90      19.3 +/-    0.90  0.130 / 0.180
G28     224.6          13.7               15.7 +/-    2.78      40.2 +/-    2.78  0.040 / 0.030
G30     287.5          24.6               11.8 +/-    1.71      23.3 +/-    1.71  0.040 / 0.020