PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/06-11:43:10
G01     77.3           33.3                4.5 +/-    1.90       7.4 +/-    1.90  0.030 / 0.030
G07     134.0          35.4                6.5 +/-    1.02      10.3 +/-    1.02  0.030 / 0.030
G11     57.0           33.5                4.2 +/-    1.92       6.9 +/-    1.92  0.060 / 0.080
G13     281.1          38.1                6.9 +/-    1.27      10.3 +/-    1.27  0.060 / 0.110
G15     311.5          10.9               -3.6 +/-   15.33      -9.9 +/-   15.33  0.050 / 0.100
G17     225.0          65.5                7.2 +/-    0.82       7.8 +/-    0.82  0.080 / 0.120
G18     52.6           20.0                3.3 +/-    5.89       7.3 +/-    5.89  0.050 / 0.070
G19     220.4          32.6                4.9 +/-    1.95       8.2 +/-    1.95  0.070 / 0.060
G28     8.1            60.7                5.8 +/-    1.47       6.5 +/-    1.47  0.120 / 0.310
G30     128.4          68.7                6.8 +/-    0.74       7.2 +/-    0.74  0.210 / 0.460