PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-21:58:00
G01     94.4           30.4               10.3 +/-    0.94      18.0 +/-    0.94  0.030 / 0.050
G07     122.7          43.8               10.8 +/-    1.03      14.8 +/-    1.03  0.050 / 0.050
G11     71.4           40.7                9.5 +/-    1.18      13.7 +/-    1.18  0.070 / 0.130
G13     298.5          35.3                9.0 +/-    0.89      14.2 +/-    0.89  0.070 / 0.100
G17     210.6          51.3               11.2 +/-    0.55      13.9 +/-    0.55  0.040 / 0.050
G18     64.9           23.2                8.1 +/-    1.60      16.5 +/-    1.60  0.050 / 0.050
G19     212.4          23.2               11.8 +/-    2.38      24.0 +/-    2.38  0.030 / 0.030
G28     332.8          61.4                8.4 +/-    0.68       9.4 +/-    0.68  0.020 / 0.030
G30     89.9           78.1               10.2 +/-    0.64      10.4 +/-    0.64  0.180 / 0.280