PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/16-01:57:30
G02     25.1           61.6                7.3 +/-    0.85       8.2 +/-    0.85  0.030 / 0.020
G05     149.3          54.4               11.0 +/-    0.70      13.1 +/-    0.70  0.030 / 0.020
G06     47.9           25.6                5.6 +/-    1.82      10.9 +/-    1.82  0.180 / 0.330
G12     232.8          77.5                7.1 +/-    0.51       7.3 +/-    0.51  0.190 / 0.220
G19     92.5           14.8                6.5 +/-    2.57      16.3 +/-    2.57  0.090 / 0.060
G25     306.8          47.8                7.5 +/-    1.81       9.7 +/-    1.81  0.100 / 0.100
G29     302.8          25.5                6.8 +/-    1.61      13.1 +/-    1.61  0.030 / 0.040