PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/15-20:59:20
G02     76.7           20.3                8.5 +/-    0.76      18.5 +/-    0.76  0.030 / 0.050
G05     44.7           40.2                7.9 +/-    1.03      11.4 +/-    1.03  0.030 / 0.060
G13     107.3          29.5               11.0 +/-    1.16      19.5 +/-    1.16  0.060 / 0.170
G15     153.9          29.7               14.4 +/-    1.54      25.4 +/-    1.54  0.080 / 0.160
G20     228.5          -11.0              21.9 +/-    4.95      59.6 +/-    4.95  0.080 / 0.150
G21     289.6          30.1                9.7 +/-    1.32      17.0 +/-    1.32  0.080 / 0.120
G25     213.0          32.5               14.4 +/-    1.28      24.0 +/-    1.28  0.090 / 0.200
G26     310.9          16.6                9.3 +/-    1.33      22.1 +/-    1.33  0.080 / 0.160
G29     344.0          76.4                7.6 +/-    0.61       7.8 +/-    0.61  0.050 / 0.120