PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-13:28:00
G01     78.8           33.2                6.2 +/-    1.33      10.2 +/-    1.33  0.030 / 0.020
G07     133.1          37.0                7.9 +/-    1.06      12.1 +/-    1.06  0.030 / 0.030
G11     58.1           34.2                7.4 +/-    2.29      12.0 +/-    2.29  0.060 / 0.060
G13     282.7          38.0                8.8 +/-    1.24      13.2 +/-    1.24  0.050 / 0.050
G15     311.0          11.6                5.1 +/-    2.33      13.6 +/-    2.33  0.050 / 0.090
G17     223.4          64.1                8.8 +/-    0.91       9.6 +/-    0.91  0.060 / 0.110
G18     54.2           20.8                6.6 +/-    5.14      14.3 +/-    5.14  0.060 / 0.090
G19     219.6          32.4                6.5 +/-    1.74      10.9 +/-    1.74  0.070 / 0.080
G28     6.9            60.7                7.3 +/-    1.35       8.3 +/-    1.35  0.240 / 0.210
G30     126.1          69.9                8.4 +/-    0.70       8.9 +/-    0.70  0.330 / 0.350