PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-23:57:30
G02     226.1          69.7               10.8 +/-    1.11      11.5 +/-    1.11  0.040 / 0.060
G05     174.0          10.2               -7.4 +/-   27.20     -20.5 +/-   27.20  0.070 / 0.060
G06     44.9           69.6               10.8 +/-    0.48      11.4 +/-    0.48  0.060 / 0.090
G12     319.8          41.4                9.6 +/-    1.11      13.6 +/-    1.11  0.060 / 0.100
G17     64.6           26.2                9.3 +/-    0.75      17.7 +/-    0.75  0.130 / 0.220
G19     48.8           43.3               10.2 +/-    0.88      14.1 +/-    0.88  0.080 / 0.270
G24     252.5          38.6               11.5 +/-    0.91      17.2 +/-    0.91  0.040 / 0.060
G28     127.0          10.9               12.8 +/-    1.79      34.9 +/-    1.79  0.040 / 0.060