PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-22:43:10
G07     319.2          52.2                7.0 +/-    0.41       8.6 +/-    0.41  0.320 / 0.230
G08     117.4          47.7               10.3 +/-    0.81      13.3 +/-    0.81  0.120 / 0.240
G09     238.0          82.3                8.8 +/-    0.49       8.9 +/-    0.49  0.040 / 0.050
G16     43.8           16.2                5.9 +/-    3.09      14.3 +/-    3.09  0.040 / 0.050
G23     151.0          51.2               10.5 +/-    0.56      13.0 +/-    0.56  0.150 / 0.310
G27     64.8           35.2                7.7 +/-    1.22      12.3 +/-    1.22  0.240 / 0.250
G28     230.4          22.2                9.1 +/-    2.87      19.1 +/-    2.87  0.060 / 0.080
G30     296.3          32.2                7.6 +/-    2.46      12.7 +/-    2.46  0.050 / 0.060