PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-03:43:10
G02     27.0           60.2              -21.7 +/-    0.58     -24.6 +/-    0.58  0.030 / 0.020
G05     147.8          55.9                5.6 +/-    0.32       6.6 +/-    0.32  0.020 / 0.020
G06     48.3           25.6                1.9 +/-    2.80       3.6 +/-    2.80  0.160 / 0.130
G12     225.3          76.5                3.4 +/-    0.80       3.4 +/-    0.80  0.110 / 0.080
G19     93.7           14.2                3.5 +/-    2.48       8.9 +/-    2.48  0.180 / 0.250
G25     304.7          49.9                2.0 +/-    2.87       2.5 +/-    2.87  0.140 / 0.230
G29     304.7          27.8                1.7 +/-    1.09       3.1 +/-    1.09  0.050 / 0.040