PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-04:42:20
G02     40.9           48.2                2.7 +/-    1.10       3.5 +/-    1.10  0.030 / 0.040
G05     118.6          67.6                4.3 +/-    0.62       4.6 +/-    0.62  0.040 / 0.040
G06     56.5           14.2                2.4 +/-    1.36       6.1 +/-    1.36  0.030 / 0.020
G12     195.6          61.2                4.6 +/-    0.54       5.1 +/-    0.54  0.020 / 0.020
G25     280.0          58.7                2.2 +/-    0.76       2.5 +/-    0.76  0.060 / 0.040
G29     316.0          39.0                0.9 +/-    0.95       1.4 +/-    0.95  0.060 / 0.070