PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/07-00:42:50
G01     63.2           31.5                7.0 +/-    1.23      11.9 +/-    1.23  0.040 / 0.050
G06     181.7          11.5                1.7 +/-   39.16       4.5 +/-   39.16  0.040 / 0.050
G07     141.0          25.3                9.3 +/-    1.45      18.0 +/-    1.45  0.060 / 0.070
G11     51.2           28.4                6.5 +/-    2.15      11.9 +/-    2.15  0.070 / 0.060
G13     266.9          36.0                9.4 +/-    1.24      14.6 +/-    1.24  0.120 / 0.370
G15     295.9          16.6                7.1 +/-    1.76      17.0 +/-    1.76  0.180 / 0.350
G17     246.4          72.0                8.3 +/-    0.64       8.7 +/-    0.64  0.030 / 0.020
G19     230.0          48.2                9.0 +/-    2.31      11.6 +/-    2.31  0.030 / 0.030
G28     32.1           57.3                7.9 +/-    0.72       9.2 +/-    0.72  0.070 / 0.100
G30     140.9          51.5               10.7 +/-    0.50      13.3 +/-    0.50  0.080 / 0.090