PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-22:57:30
G10     281.6          45.8                8.2 +/-    0.86      10.9 +/-    0.86  0.060 / 0.130
G15     51.1           42.2                7.5 +/-    0.76      10.6 +/-    0.76  0.070 / 0.100
G20     277.8          34.4               16.5 +/-    0.63      26.5 +/-    0.63  0.030 / 0.040
G21     41.4           77.4                8.1 +/-    0.23       8.3 +/-    0.23  0.040 / 0.040
G24     107.5          21.2                9.1 +/-    1.10      19.4 +/-    1.10  0.120 / 0.170
G27     311.4          27.6                6.8 +/-    2.51      12.5 +/-    2.51  0.090 / 0.170
G29     169.1          19.6               10.8 +/-    0.72      23.9 +/-    0.72  0.040 / 0.060
G32     206.2          22.4               10.3 +/-    1.00      21.5 +/-    1.00  0.040 / 0.060