PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/11-12:58:00
G01     95.4           30.4                4.5 +/-    1.06       7.7 +/-    1.06  0.030 / 0.030
G07     121.0          49.4                4.2 +/-    0.80       5.3 +/-    0.80  0.030 / 0.030
G11     72.9           40.7                5.0 +/-    0.69       7.2 +/-    0.69  0.060 / 0.170
G13     299.4          34.6                5.8 +/-    1.78       9.2 +/-    1.78  0.070 / 0.150
G17     210.9          50.1                5.8 +/-    1.51       7.3 +/-    1.51  0.080 / 0.140
G18     68.0           24.3                5.2 +/-    1.11      10.3 +/-    1.11  0.090 / 0.120
G19     213.0          19.7                3.8 +/-    2.61       8.4 +/-    2.61  0.080 / 0.140
G28     339.4          61.9                3.2 +/-    0.84       3.6 +/-    0.84  0.070 / 0.120
G30     77.9           79.9                4.8 +/-    0.72       4.9 +/-    0.72  0.050 / 0.060