PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-13:58:00
G01     305.8          34.0                6.0 +/-    2.31       9.7 +/-    2.31  0.040 / 0.040
G03     307.4          10.6              -14.3 +/-   19.33     -39.4 +/-   19.33  0.040 / 0.050
G10     107.6          39.2                7.1 +/-    1.03      10.5 +/-    1.03  0.140 / 0.130
G11     283.0          27.1                8.2 +/-    0.78      15.3 +/-    0.78  0.080 / 0.100
G14     353.8          67.0                6.3 +/-    0.50       6.8 +/-    0.50  0.130 / 0.120
G22     310.9          30.0                6.4 +/-    1.46      11.2 +/-    1.46  0.100 / 0.110
G25     81.5           17.2                8.0 +/-    1.82      18.8 +/-    1.82  0.020 / 0.020
G31     161.8          67.8                8.4 +/-    0.50       9.0 +/-    0.50  0.020 / 0.030
G32     39.1           50.3                5.7 +/-    1.41       7.1 +/-    1.41  0.050 / 0.060