PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-19:28:00
G01     61.8           30.9                9.4 +/-    0.91      16.1 +/-    0.91  0.040 / 0.050
G07     140.6          18.2               12.8 +/-    1.61      29.4 +/-    1.61  0.030 / 0.060
G11     48.5           24.8                9.2 +/-    1.04      18.1 +/-    1.04  0.070 / 0.160
G13     264.1          36.7               12.4 +/-    0.91      19.1 +/-    0.91  0.070 / 0.210
G15     295.0          16.5                8.4 +/-    1.55      20.2 +/-    1.55  0.100 / 0.240
G17     250.4          75.3               11.3 +/-    0.57      11.7 +/-    0.57  0.070 / 0.250
G18     42.3           12.9                8.0 +/-    0.96      20.9 +/-    0.96  0.050 / 0.080
G19     229.8          49.3               10.8 +/-    1.23      13.7 +/-    1.23  0.070 / 0.080
G28     23.8           59.4                8.7 +/-    0.47      10.0 +/-    0.47  0.140 / 0.190
G30     141.9          52.1               10.9 +/-    1.08      13.5 +/-    1.08  0.130 / 0.250