PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-15:28:00
G01     82.7           33.0                8.1 +/-    1.38      13.4 +/-    1.38  0.030 / 0.030
G07     130.8          40.1               10.2 +/-    1.34      14.9 +/-    1.34  0.030 / 0.030
G11     61.6           36.6                8.8 +/-    1.14      13.5 +/-    1.14  0.040 / 0.050
G13     286.9          37.5               12.3 +/-    1.06      18.6 +/-    1.06  0.040 / 0.070
G15     312.6          11.1                3.4 +/-   20.47       9.3 +/-   20.47  0.060 / 0.080
G17     220.0          59.4               11.1 +/-    1.69      12.7 +/-    1.69  0.060 / 0.100
G18     57.4           22.1                7.1 +/-    1.87      14.8 +/-    1.87  0.090 / 0.190
G19     217.9          30.2               12.1 +/-    2.75      21.2 +/-    2.75  0.130 / 0.180
G28     1.2            61.1                8.9 +/-    0.70      10.0 +/-    0.70  0.070 / 0.080
G30     120.4          71.8               10.6 +/-    0.46      11.1 +/-    0.46  0.070 / 0.090