PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-01:13:10
G02     25.5           61.3               10.1 +/-    0.96      11.4 +/-    0.96  0.050 / 0.070
G05     148.7          54.9               13.8 +/-    0.71      16.5 +/-    0.71  0.060 / 0.070
G06     48.3           24.8                9.7 +/-    0.99      19.0 +/-    0.99  0.020 / 0.030
G12     230.5          77.3               11.1 +/-    0.66      11.4 +/-    0.66  0.030 / 0.040
G19     92.9           14.3               11.5 +/-    0.87      29.1 +/-    0.87  0.040 / 0.040
G25     306.6          47.9                9.7 +/-    1.25      12.5 +/-    1.25  0.040 / 0.050
G29     302.9          25.4               11.6 +/-    1.32      22.5 +/-    1.32  0.070 / 0.110