PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-21:12:40
G01     38.6           12.5                8.0 +/-    1.04      21.0 +/-    1.04  0.110 / 0.190
G02     199.2          12.5               24.1 +/-    2.67      63.7 +/-    2.67  0.100 / 0.190
G06     175.5          41.9               18.7 +/-    1.72      26.4 +/-    1.72  0.040 / 0.060
G13     233.0          19.4               20.0 +/-    2.08      44.7 +/-    2.08  0.040 / 0.060
G15     265.9          10.6               14.6 +/-    1.67      40.1 +/-    1.67  0.120 / 0.320
G17     10.9           66.7               12.2 +/-    0.33      13.2 +/-    0.33  0.060 / 0.370
G19     292.0          71.1               15.0 +/-    0.50      15.8 +/-    0.50  0.110 / 0.150
G24     314.3          23.7                8.5 +/-    1.89      17.2 +/-    1.89  0.140 / 0.210
G28     73.1           48.0               10.9 +/-    0.46      14.1 +/-    0.46  0.050 / 0.060
G30     155.1          21.3               16.6 +/-    1.78      35.4 +/-    1.78  0.060 / 0.080