PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-16:58:10
G01     45.4           21.6                8.3 +/-    2.40      17.5 +/-    2.40  0.060 / 0.180
G06     175.1          32.8               13.7 +/-    1.87      22.7 +/-    1.87  0.090 / 0.180
G11     43.5           9.6                 7.3 +/-    5.60      20.5 +/-    5.60  0.050 / 0.070
G13     244.1          26.8               11.7 +/-    2.36      21.9 +/-    2.36  0.050 / 0.070
G15     279.9          14.0               10.3 +/-    1.33      26.3 +/-    1.33  0.170 / 0.370
G17     339.5          75.8               11.8 +/-    0.35      12.1 +/-    0.35  0.300 / 0.360
G19     255.6          62.1               12.3 +/-    0.75      13.7 +/-    0.75  0.060 / 0.090
G24     318.1          14.2                8.3 +/-    2.10      21.1 +/-    2.10  0.080 / 0.100
G28     61.5           50.3               10.7 +/-    1.19      13.4 +/-    1.19  0.180 / 0.250
G30     152.5          35.6               12.5 +/-    0.66      19.6 +/-    0.66  0.120 / 0.190