PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/01-01:58:00
G01     98.3           29.5                7.8 +/-    1.33      13.8 +/-    1.33  0.050 / 0.040
G07     118.1          51.7                8.0 +/-    0.33       9.9 +/-    0.33  0.030 / 0.050
G08     41.9           14.7                3.4 +/-    3.19       8.6 +/-    3.19  0.100 / 0.120
G11     80.2           42.8                6.9 +/-    0.68       9.6 +/-    0.68  0.090 / 0.110
G13     303.0          32.5                3.4 +/-    1.16       5.6 +/-    1.16  0.090 / 0.280
G17     210.2          45.6                9.9 +/-    0.77      13.2 +/-    0.77  0.100 / 0.470
G19     211.7          21.2                8.7 +/-    1.55      18.7 +/-    1.55  0.030 / 0.040
G28     336.5          61.9                4.9 +/-    0.64       5.4 +/-    0.64  0.040 / 0.040
G30     86.0           76.6                6.9 +/-    0.43       7.1 +/-    0.43  0.050 / 0.050