PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/19-01:57:40
G02     203.1          38.3               11.5 +/-    0.60      17.2 +/-    0.60  0.110 / 0.260
G06     159.5          70.5               11.0 +/-    0.38      11.6 +/-    0.38  0.140 / 0.190
G12     308.4          15.8                7.9 +/-    1.65      19.3 +/-    1.65  0.030 / 0.020
G17     34.9           50.4                9.1 +/-    0.70      11.4 +/-    0.70  0.030 / 0.030
G19     4.9            64.2                8.8 +/-    0.51       9.7 +/-    0.51  0.080 / 0.110
G24     296.4          38.6                9.1 +/-    2.14      13.5 +/-    2.14  0.100 / 0.120
G28     104.6          29.5               10.2 +/-    1.14      18.1 +/-    1.14  0.040 / 0.040