PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-03:12:40
G02     226.6          71.4                6.0 +/-    0.56       6.3 +/-    0.56  0.040 / 0.040
G05     173.5          11.0               -3.1 +/-   17.40      -8.5 +/-   17.40  0.050 / 0.050
G06     44.2           66.9                3.8 +/-    0.54       4.0 +/-    0.54  0.060 / 0.090
G12     320.6          43.8                4.1 +/-    0.45       5.6 +/-    0.45  0.070 / 0.080
G17     63.6           29.1                4.2 +/-    1.02       7.5 +/-    1.02  0.020 / 0.030
G19     49.7           43.3                3.9 +/-    1.12       5.4 +/-    1.12  0.030 / 0.030
G24     254.1          38.5                5.3 +/-    1.43       7.9 +/-    1.43  0.150 / 0.300