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                4.2 +/-    0.83       7.0 +/-    0.83  0.050 / 0.080
G07     134.0          35.4                6.6 +/-    0.79      10.4 +/-    0.79  0.040 / 0.070
G11     57.0           33.5                2.9 +/-    1.07       4.7 +/-    1.07  0.030 / 0.040
G13     281.1          38.1                5.1 +/-    0.97       7.7 +/-    0.97  0.030 / 0.030
G15     311.5          10.9               -0.2 +/-   15.40      -0.5 +/-   15.40  0.070 / 0.200
G17     225.0          65.5                6.0 +/-    0.67       6.5 +/-    0.67  0.090 / 0.260
G18     52.6           20.0                3.1 +/-    1.46       6.9 +/-    1.46  0.110 / 0.110
G19     220.4          32.6                3.1 +/-    1.84       5.2 +/-    1.84  0.090 / 0.110
G28     8.1            60.7                4.0 +/-    0.46       4.6 +/-    0.46  0.080 / 0.110
G30     128.4          68.7                5.7 +/-    0.47       6.1 +/-    0.47  0.070 / 0.140